• Metamaterials'2014
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24 August 2014 / Start time: 15 h 0 min
15:00 - 18:00 - Sunday registration
25 August 2014 / Start time: 7 h 0 min
07:00 - 08:45 - Monday registration
08:45 - 09:00 - Opening ceremony
09:00 - 10:00 - Plenary session I
09:00 - Plenary Session I

Session chairperson(s): Filiberto Bilotti

09:00 - 10:00 - Metafunctional Platforms Plenary [Show abstract]
  • Nader Engheta, University of Pennsylvania, USA
In this talk I discuss how the concept of metamaterials may lead to development of novel nanophotonic devices with unusual functionality (“meta-functionality”) by exploiting extreme limits of material parameters. I present the metastructures for engineering photon density of states, control of photon flow, and light manipulation at the nanoscale for signal handling and computing
10:00 - 10:30 - Coffee break (Monday morning)
10:30 - 12:00 - Oral sessions (Monday morning)
10:30 - Thermal metamaterials

Session chairperson(s): Dimitrios Sounas

10:30 - 11:00 - Refractory Metamaterials Invited oral [Show abstract]
  • Urcan Guler, Purdue University, USA
  • Wei Li, Purdue University, USA
  • Jingjing Liu, Purdue University, USA
  • Nathaniel Kinsey, Purdue University, USA
  • Gururaj Naik, Stanford University, USA
  • J Guan, Wuhan University of Technology, China
  • Alexander Kildishev, Purdue University, USA
  • Alexandra Boltasseva, Purdue University, USA
  • Vladimir Shalaev, Purdue University, USA
Refractory materials with plasmonic properties in the visible and near infrared frequency regions for applications with high temperature requirements are discussed. Transition metal nitrides, in particular titanium nitride, exhibit plasmonic behavior in the visible and near infrared ranges, while offering the superior properties of refractory materials. Metamaterials designed for high temperature applications such as solar thermo-photovoltaics are introduced, and their optical performances, as well as, their high temperature stabilities are demonstrated. Spectrally selective broadband absorbers and narrowband emitters made of refractory plasmonic materials promise higher efficiency devices with reduced maintenance efforts through thin metamaterial designs.
11:00 - 11:30 - Exploiting the coldness of the universe with nanophotonic structures Invited oral [Show abstract]
  • Shanhui Fan, Stanford University, USA
The coldness of the universe represents an important and yet largely unexplored renewable thermodynamic resource. We show that nanophotonic structures provide the key to utilize such resource for improving energy efficiency on Earth.
11:30 - 11:45 - High temperature plasmonics and metamaterials Oral [Show abstract]
  • Sean Molesky, University of Alberta, Canada
  • Zubin Jacob, University of Alberta, Canada
We propose a method for engineering thermally excited far field electromagnetic radiation through the use of epsilon-near-zero and epsilon-near-pole metamaterials. We also introduce the concept of high temperature plasmonics to replace conventional metamaterial building blocks with low thermal stability. Using the approaches presented here, the angular nature, spectral position, and width of the thermal emission can be finely tuned for a variety of heat transfer applications. In particular, we show that metamaterial emitters near 1500 K can be used as part of thermophotovoltaic devices to surpass the Shockley-Queisser conversion efficiency limit of 41%.
11:45 - 12:00 - Thermal Hyperlens: a Way to Strongly Super-Plankian Far-Field Heat Radiation Oral [Show abstract]
  • Constantin Simovski, Aalto University, Finland
  • Sergei Tretyakov, Aalto University, Finland
  • Igor Nefedov , Aalto University, Finland
  • Sergey Kosulnikov, University ITMO, Russia
  • Pavel Belov, University ITMO, Russia
We suggest and theoretically explore a possibility to strongly exceed the black- body limit for the steady thermal radiation of a thermal source using an infrared hyperlens. The hyperbolic metamaterial converts the near-field thermal radiation into propagating waves and the radial divergence of the local optical axes allows this radiation to efficiently pass from the hyperlens into free space. This way the thermal energy usually confined in the emitter is irradiated.
10:30 - Plasmonics I

Session chairperson(s): Javier Aizpurua

10:30 - 11:00 - Magnetic Localized Surface Plasmons Invited oral [Show abstract]
  • Paloma Huidobro, Universidad Autonoma de Madrid, Spain
  • Esteban Moreno, Universidad Autonoma de Madrid, Spain
  • Luis Martin-Moreno, Instituto de Ciencia de Materiales de Aragon (ICMA), Spain
  • Francisco Garcia-Vidal, Universidad Autonoma de Madrid, Spain
Here we demonstrate the emergence of localized surface plasmon modes of geometrical origin in metallic particles whose surface is periodically textured at a subwavelength scale. In particular, we study a novel magnetic mode appearing in such structures, which features subwavelength confinement and has no analogue in conventional particle plasmonics.
11:00 - 11:30 - Metamaterial scattering arrays: band structures, back action and gain Invited oral [Show abstract]
  • A. Femius Koenderink, Center for Nanophotonics, FOM Institute AMOLF, Netherlands
  • Andrej Kwadrin, Center for Nanophotonics, FOM Institute AMOLF, Netherlands
  • Per Lunnemann, Center for Nanophotonics, FOM Institute AMOLF, Netherlands
  • Hinke Schokker, Center for Nanophotonics, FOM Institute AMOLF, Netherlands
Through experiment and semi-analytical theory, we answer exiting questions about metasurfaces, namely, what their band structure is, how that is affected by back action, and what implications are for metasurface lasers.
Media link(s):

Relevant publications

11:30 - 11:45 - Magneto-electric Response in Coupled Plasmonic Nanoparticles Oral [Show abstract]
  • Rasoul Alaee, Institute of Theoretical Solid State Physics , Karlsruhe Institute of Technology, Wolfgang-Gaede-Str 1, D-76128, Karlsruhe, Germany
  • Mohammad Albooyeh, Department of Radio Science and Engineering, SMARAD Centre of Excellence, Aalto University, P.O. Box 13000, FI-00076, Aalto, Finland
  • Christoph Menzel, Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University of Jena, D-07743 Jena, Germany
  • Stefan Fasold, Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University of Jena, D-07743 Jena, Germany
  • Norik Janunts, Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University of Jena, D-07743 Jena, Germany
  • Matthias Falkner, Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University of Jena, D-07743 Jena, Germany
  • Thomas Pertsch, Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University of Jena, D-07743 Jena, Germany
  • Constantin R. Simovski, Department of Radio Science and Engineering, SMARAD Centre of Excellence, Aalto University, P.O. Box 13000, FI-00076, Aalto, Finland
  • Falk Lederer, Institute of Applied Physics, Abbe Center of Photonics, Friedrich Schiller University of Jena, D-07743 Jena, Germany
  • Carsten Rockstuhl, Institute of Theoretical Solid State Physics , Karlsruhe Institute of Technology, Wolfgang-Gaede-Str 1, D-76128, Karlsruhe, Germany
We investigate theoretically and experimentally the electromagnetic response of a meta-atom that consists of two coupled asymmetric plasmonic nanoparticle. These asymmetric particles are characterized by an extreme magneto-electric response in addition to electric and magnetic responses; common to observe if two identical nanoparticles are coupled. Such unique scattering property is extremely useful to observe various optical effects. It can be shown, e.g., that in the dipole approximation it is necessary to have such a response in order to achieve a zero-backscattering regime (Huygens patterns). The functionality of these nanoparticles arranged in a planar array is also investigated. It is proven that such magneto-electric response is essential to reach the total absorption as well as asymmetric reflection.
11:45 - 12:00 - Surface Plasmon Resonances on Cones and Wedges Oral [Show abstract]
  • Henrik Kettunen, University of Helsinki, Finland
  • Lucas Chesnel, Aalto University School of Science, Finland
  • Harri Hakula, Aalto University School of Science, Finland
  • Henrik Wallén, Aalto University School of Electrical Engineering, Finland
  • Ari Sihvola, Aalto University School of Electrical Engineering, Finland
We consider the hypersingular plasmonic surface modes that are supported by a 3D negative-permittivity circular conical tip and study how their occurrence depends on the opening angle and permittivity of the cone. A comparison to a 2D wedge is made.
10:30 - Metamaterials for antennas

Session chairperson(s): Olav Breinbjerg

10:30 - 11:00 - Far-Field Synthesis Using Impedance Surfaces Supporting Leaky Waves Invited oral [Show abstract]
  • Brian Tierney, University of Michigan, USA
  • Anthony Grbic, University of Michigan, USA
The synthesis of leaky-wave radiation patterns is explored using impedance surfaces. The impedance surface consists of a grounded, uniaxial dielectric substrate topped by a sheet impedance. To synthesize far-field patterns, the leakage constant α and transverse propagation constant β are controlled along the aperture using two free parameters of the structure: the extraordinary index of the unaxial substrate and the sheet impedance. The transverse resonance technique is employed to derive dispersion curves that relate the permittivity tensor and sheet impedance to the complex wavenumber of the leaky-wave mode. The analysis facilitates the design of leaky-wave antennas that generate prescribed far-field patterns. A design example is reported to verify the theory.
11:00 - 11:30 - Generation Of Broadband Bessel Beams Using Metamaterial Lens Invited oral [Show abstract]
  • Mei Qing Qi, Southeast University, China
  • Wen Xuan Tang, Southeast University, China
  • Tie Jun Cui, Southeast University, China
We propose to generate broadband Bessel beams using a gradient index (GRIN) metamaterial lens illuminated by broadband waveguide antenna. The GRIN lens is constructed by multi-layer structure and each layer is composed of GRIN metamaterials. The metamaterials are designed as dielectric plates printed with metallic patterns or dilled by air holes, which operate in wide bandwidth. The diameter of the GRIN lens is much larger than the operating wavelength (λ) so as to transform the spherical wavefronts emitted from feed into conical beams. In principle, this kind of metamaterial lens can produce Bessel beams at arbitrary distance by controlling the refractive-index distribution. Full-wave simulation results show that the distance of Bessel beams can be maintained in 100λ in a broadband ranging from 12 GHz to 18 GHz.
11:30 - 11:45 - Novel Meta-Surfaces for the Design of Broadband Highly Directive Antennas Oral [Show abstract]
  • Konstantinos Konstantinidis, School of Electronic Electrical and Computer Engineering, University of Birmingham, United Kingdom
  • Alexandros P. Feresidis, School of Electronic Electrical and Computer Engineering, University of Birmingham, United Kingdom
Novel meta-surfaces for designing broadband highly directive Fabry-Perot type antennas are presented. The proposed structure is based on novel optimized multi-layer periodic surfaces that create multiple sub-wavelength cavities with enhanced bandwidth performance. Two double-layer periodic arrays of dissimilar dimensions are designed and optimized, each double-layer array consisting of an Artificial Magnetic Conductor (AMC) and a Partially Reflective Surface (PRS) printed on either side of a dielectric substrate. The two double-layer metasurfaces are placed at about quarter wavelength from a ground plane and from each other. An antenna of 18.3dBi directivity and 8% 3-dB radiation bandwidth is obtained.
11:45 - 12:00 - SRR-based Notch Filter for Horn Antennas Oral [Show abstract]
  • Mirko Barbuto, "Niccolò Cusano" University, Italy
  • Filiberto Bilotti, "Roma Tre" University, Italy
  • Alessandro Toscano, "Roma Tre" University, Italy
In this contribution, we extend the recent results obtained by our group concerning the use of metamaterial-inspired inclusions to design self-filtering horn antennas. In particular, we propose a new horn antenna with a notched-band characteristic based on the use of a single split-ring resonator (SRR). From simulated results it can be found that the proposed structure has a notched-band around the resonant frequency of the resonator, while it keeps the characteristics of the standard horn antenna in the rest of the frequency band
12:00 - 13:15 - Lunch break (Monday)
13:15 - 14:45 - Poster session I
13:15 - Poster session I
1 - Effects of High Power on Microwave Metamaterials Poster [Show abstract]
  • Rebecca Seviour, International Institute of Accelerator Applications, University of Huddersfield, United Kingdom
  • Yap Soon Tan, International Institute of Accelerator Applications, University of Huddersfield, United Kingdom
  • Aimee Hopper, International Institute of Accelerator Applications, University of Huddersfield, United Kingdom
In this paper we examine experimentally and numerically the effect of exposing a metamaterial to relatively high-power EM waves. We show that a metamaterial consisting of a conventional Split Ring Resonator on an FR4 substrate can undergo combustion when exposed to 1W of RF. We compare the experimental results to numerical simulations, showing that numerical models can be accurately used to predict the thermal behaviour of metamaterials under exposure to high-power RF.
2 - Metasurfaces for Plasmon-Mediated Molecular Binding and Catalysis under Vibrational Resonance No show [Show abstract]
  • Michael Miller, Southwest Research Institute, USA
Eliciting surface plasmons (SPs) from a metasurface and coupling their intense surface-bound field to the vibrational modes of nearby molecules under resonance conditions opens the door to important opportunities in photocatalysis, quantum control of structure, optical sensors and, possibly, molecular levitation. By bridging first principles and classical theories, we predict the conditions under which resonant coupling occurs between low-frequency SPs and the ground-state fundamental vibrations of simple molecules (0.26-0.28 eV), demonstrating through experiments for properly-tailored plasmonic metasurfaces measurable effects on the molecule's surface binding energy.
3 - Spin waves localized in periodic and Fibonacci sequence of magnetic wires in crossover of dipolar and exchange regime. Poster [Show abstract]
  • Justyna Rychly, Faculty of Physics, Adam Mickiewicz University in Poznań, Poland, Poland
  • Maciej Krawczyk, Faculty of Physics, Adam Mickiewicz University in Poznań, Poland, Poland
We calculated spin wave spectra and profiles of modes for one-dimensional periodic and Fibonacci sequences of magnetic wires. The wires, being in direct contact, are coupled both by exchange and dipolar interactions. The structure was composed of two different kinds of infinitely long magnetic wires made of: cobalt and permalloy, having the same widths and thicknesses and saturated magnetically by the bias magnetic field along wire axis. We performed systematic numerical study to find the differences between spin wave spectra in periodic and quasiperiodic magnonic structures. Our results showed the difference in the dispersion relations and also in the number of surface states. In Fibonacci structure we found increased number of magnonic band gaps and a number of localized spin-wave excitations with strong multimode absorption of the external microwave magnetic field what makes this system the promising metamaterial for microwave applications.
4 - Tuning ZOR in ENZ Waveguide Using a Single Longitudinal Slot and Equivalent Circuit Parameter Extraction Poster [Show abstract]
  • Nebojsa Vojnovic, University of Belgrade, Institute of Physics, Serbia
  • Branka Jokanovic, University of Belgrade, Institute of Physics, Serbia
  • Miranda Mitrovic, Technical University of Denmark, Department of Photonics Engineering, Denmark
  • Francisco Mesa, University of Seville, Department of Applied Physics, Spain
  • Francisco Medina, University of Seville, Department of Electronics and Electromagnetics, Spain
Abstract - In this paper, the effects of placing a longitudinal slot in the channel region of a rectangular waveguide ENZ structure, are analyzed. A following investigation showed that changing the length of this slot can be employed to achieve tuning of only the tunneling frequency. Maximum resonant frequency shift reported is 11%. In addition, the equivalent circuit for the ENZ structure with this kind of slot configuration was derived with an excellent agreement between numerical and full-wave simulations.
5 - Two-Dimensional Spoof Surface Plasmon Polaritons for Designing Holographic Metasurfaces Poster [Show abstract]
  • Yunbo Li , State Key Laboratory of Millimeter Waves, Department of Radio Engineering, Southeast University Nanjing , People's Republic of China, China
  • Bengeng Cai, State Key Laboratory of Millimeter Waves, Department of Radio Engineering, Southeast University Nanjing , People's Republic of China, China
  • Tiejun Cui, State Key Laboratory of Millimeter Waves, Department of Radio Engineering, Southeast University Nanjing , People's Republic of China, China
We propose a method to design two-dimensional (2D) holographic metasurfaces, which are composed of textured structures, to support spoof surface plasmon polaritons (SPPs) in the microwave frequency. Combining with the holographic antenna technology and radiation theory of leaky-wave, we design a planar spiral antenna, which can generate the radiations of two reversely circular polarizations in the two sides of planar antenna.
6 - Inner Modes Of A Compact Spiral Resonator Suitable For Metamaterial Applications Poster [Show abstract]
  • Nataliya Maleeva, National University of Science and Technology ”MISIS”, Russia
Spiral resonators are ultra-compact magnetic components promising for applications in negative refraction index metamaterials. We present an experimental study, numerical simulation and theoretical model of a planar spiral resonator electrodynamics. Spiral resonators have been made in the form of a monofilar Archimedean spiral. We show that the analysis of electrodynamic properties of a spiral resonator is in a good accord with direct numerical simulations and experimental data obtained with specifically designed Magnetic Probe Scanning and Laser Scanning Microscopy.
7 - Experimental Study on Frequency-independent Response of Self-complementary Metasurfaces in Terahertz Regime Poster [Show abstract]
  • Yoshiro Urade, Kyoto University, Japan
  • Yosuke Nakata, Kyoto University, Japan
  • Toshihiro Nakanishi, Kyoto University, Japan
  • Masao Kitano, Kyoto University, Japan
We experimentally demonstrate that metallic checkerboard structures loaded with resistive sheets show a frequency-independent response due to their self-complementarity. The metasurfaces are prepared and characterized in the terahertz regime. It is confirmed that the metasurfaces exhibit a frequency-independent transmission spectrum below their diffraction frequencies.
8 - Absorption and Reflection Characteristics of a Circular Disk with Gridded-Square Loop-Loaded FSS Structure for X-Band Operations Poster [Show abstract]
  • sultan can, Ankara University, Turkey
  • A. Egemen Yılmaz, Ankara University, Turkey
This paper presents the absorption and reflection characteristics of a circular disk with gridded-square loop-loaded Frequency Selective Surface (FSS). The paper demonstrates the parameters affecting the absorption and reflection characteristics, and additionally performs the parametric analysis of the proposed structure. The parametric performance is investigated in two aspects: the former being the geometry, and the latter being the material properties. The proposed structure achieves to absorb the electromagnetic waves between 8 and 13GHz; therefore, that structure is available for use in X-band applications to make an invisible surface for the aforementioned band. Moreover, tunability of the frequency is stressed via varying the parameters in light of the parametric analysis in this study.
9 - Surface Polaritons Born by Inter-element Coupling in Magnetic Metamaterials Poster [Show abstract]
  • Krystallo Hadjicosti, Imperial College London, United Kingdom
  • Oleksiy Sydoruk, Imperial College London, United Kingdom
  • Stefan A. Maier, Imperial College London, United Kingdom
  • Ekaterina Shamonina, University of Oxford, United Kingdom
We studied theoretically electromagnetic surface waves that propagate along an interface between air and magnetic metamaterials comprise coupled split-ring resonators. A new type of a different nature was found that propagates when coupling exists in the transverse direction. Interaction between the known and new type leads to complex dispersion characteristics.
10 - A Flat-passband and Wide-stopband Low-pass Filter Based on Tapered Cauchy Microstrip Koch Fractal EBG Structure Poster [Show abstract]
  • Juan de Dios Ruiz, Universidad Politécnica de Cartagena, Spain
  • Félix Lorenzo Martínez-Viviente, Universidad Politécnica de Cartagena, Spain
  • Juan Hinojosa, Universidad Politécnica de Cartagena, Spain
This paper presents a tapered and chirped Koch fractal electromagnetic bandgap (KFEBG) structure in microstrip technology that allows achieving a low-pass filter response with improved performance in the passband and stopband regions. Several distribution functions are applied to the Koch fractal patterns etched in the ground plane, together with the width of the microstrip line. Measurement and simulation results are in good agreement and show a flat response in the passband and a wide rejection band in the stopband for the selected Cauchy distribution function.
11 - Back to Back Placed Double K FSS for K and Ku Band Operations Poster [Show abstract]
  • sultan can, Ankara University, Turkey
  • A. Egemen Yılmaz, Ankara University, Turkey
  • Selma Cigdem, Ankara University, Turkey
  • Cihan Tunca, Ankara University, Turkey
This paper presents the absorption and reflection characteristics of a circular disk with gridded-square loop-loaded Frequency Selective Surface (FSS). The paper demonstrates the parameters affecting the absorption and reflection characteristics, and additionally performs the parametric analysis of the proposed structure. The parametric performance is investigated in two aspects: the former being the geometry, and the latter being the material properties. The proposed structure achieves to absorb the electromagnetic waves between 8 and 13GHz; therefore, that structure is available for use in X-band applications to make an invisible surface for the aforementioned band. Moreover, tunability of the frequency is stressed via varying the parameters in light of the parametric analysis in this study.
12 - Enhanced Magnetic Response in a Single-Layered Dielectric Grating Structure with Reduced Symmetry No show [Show abstract]
  • wenxing liu, Tongji university, China
  • Yong Sun, Tongji university, China
  • Hong Chen, Tongji university, China
We report that a magnetic resonance response with a very high quality factor can be achieved in a subwavelength dielectric nanostructure with a moderate value of the refractive index by introducing symmetry breaking in the shape of its structural unit cell. The origin of the high quality spectral responses of the nanostructures can be understood in terms of the overlapping resonances. We provide a model based on coupled mode theory to explain the spectral behaviors.
13 - Thin-Film Multiferroic Phase Shifter Based on a Slot Transmission Line Poster [Show abstract]
  • Andrey Nikitin, Saint Petersburg Electrotechnical University , Russia
  • Alexey Ustinov, Saint Petersburg Electrotechnical University , Russia
  • Alexander Semenov, Saint Petersburg Electrotechnical University , Russia
  • Oleg Pakhomov, National Research University of Information Technologies, Russia
  • Erkki Lähderanta, Lappeenranta University of Technology, Finland
A microwave phase shifter based on a thin-film multiferroic structure has been investigated. The thin-film structure was composed of a ferrite film, a ferroelectric film, and a slot transmission line. It was shown that the developed phase shifter is electrically and magnetically tunable. The dual tunability is due to a hybridization of the spin wave in the ferrite film with the electromagnetic wave in the slot-line. Performance characteristics of the phase shifter are presented.
14 - Electromagnetically Induced Transparency in Metamaterial No show [Show abstract]
  • Qun Wu, Harbin Institute of Technology, China
  • Lei Zhu, Harbin Institute of Technology, China
  • Fan-Yi Meng, Harbin Institute of Technology, China
In this paper, two types of electromagnetically induced transparency-like (EIT-like) metamaterials are presented and numerically investigated. The type I metamaterial consists of a split ring surrounded by an additional two-gap ring, which are assigned as quasi-dark and bright modes, respectively. The type II magnetic metamaterial consists of the split ring resonator (SRR) and the spiral resonator (SR) along two orthogonal axes. For the excitation with the magnetic field perpendicular to the SRR plane, the SRR and the SR are designated as the radiative element and the dark element, respectively. Numerical simulations are carried out to validate these two types of EIT-like metamaterials, and the results have proven to be quite effective.
15 - Investigation of Tunable, Electrically Coupled Meta-Atoms in a Coplanar Waveguide Poster [Show abstract]
  • Susanne Butz, Karlsruhe Institute of Technology, Physikalisches Institut, Germany
  • Philipp Jung, Karlsruhe Institute of Technology, Physikalisches Institut, Germany
  • Sergey V. Shitov, National University of Science and Technology MISIS, Russia
  • Valery P. Koshelets, Kotel’nikov Institute of Radio Engineering and Electronics (IREE RAS), Russia
  • Alexey V. Ustinov, Karlsruhe Institute of Technology, Physikalisches Institut, Germany
We present a one dimensional superconducting metamaterial, which employs meta-atoms electrically coupled to a coplanar waveguide. The meta-atom is of resonant nature with a tunable resonance frequency due to built-in two-junction (dc-) superconducting quantum interference devices (SQUIDs). We present simulated and measured results of the transmission data.
16 - Metasurfaces for absorption enhancement Poster [Show abstract]
  • Ana Díaz-Rubio, Polytechnic University of Valencia, Spain
  • Daniel Torrent, Centre National de la Recherche Scientifique, France
  • Jorge Carbonell, Polytechnic University of Valencia, Spain
  • José Sánchez-Dehesa, Polytechnic University of Valencia, Spain
The absorption enhancement by lossy dielectric layers backed by metallic metasur- faces has been studied. A rigorous analysis based on mode matching theory has been used for obtaining analytical expressions for the peak position and for total absorption.
17 - Structural Design of Two-Dimensional Dielectric Structure to Enhance Off-axis Directional Electromagnetic Wave in a Microwave range Poster [Show abstract]
  • Dongyeal Lim, Graduate School of Yonsei University, Korea (South)
  • Dongheok Shin, Graduate School of Yonsei University, Korea (South)
  • Hyundo Shin, Graduate School of Yonsei University, Korea (South)
  • Kyoungsik Kim, Department of Yonsei University, Korea (South)
  • Jeonghoon Yoo, Department of Yonsei University, Korea (South)
In this study, we suggested an unprecedented dielectric structure beyond a metal slit on the exit side of metallic aperture using a systematic approach that is two-dimensional (2D) design approach to enhance the off-axis electromagnetic wave in a microwave range. We performed a topology optimization design process to obtain an arbitrary 2D design different from ordinary one-dimensional shape design. A phase field method using reaction diffusion equation with double well potential is a prospective shape optimization method to propose such an innovative shape. In this study, we applied the method to dielectric structure design in order to guide electromagnetic wave that passes through an aperture to a desired direction and we confirmed the end result experimentally.
18 - A Novel 180o Metamaterial Phase Shifter Using Cascading Topology No show [Show abstract]
  • ROOHOLLAH HAGHPANAHAN, Brunel University, United Kingdom
We have proposed a metamaterial realization of a 180o phase shifter using cascading technique. A capacitively load ring resonator was designed and optimised to exhibit 300 phase shift at frequency of 10.8GHz with a matched impedance to the impedance of free space. Next, six unit cells were cascaded to form a 180o phase shifter.
19 - A Single Anisotropic Metasurface to Realize Luneburg Lens and Maxwell Fisheye Lens Simultaneously No show [Show abstract]
  • Xiang Wan, Room Middle604, Liwenzheng Building, State Key Laboratory of Milimeter waves, School of information science and engineering, Southeast University, China
  • Tiejun Cui, Room Middle601, Liwenzheng Building, State Key Laboratory of Milimeter waves, School of information science and engineering, Southeast University, china
The Luneburg lens and Maxwell fisheye lens are well-known microwave and optical devices with distinct focusing properties. Here, we present a planar bi-functional Luneburg-fisheye lens made of anisotropic metasurface, which features as the Luneburg lens along the horizontal optical axis while as fisheye lens along the vertical optical axis.
20 - The Effect of Truncation of Periodic Structures on NRW Material Parameter Extraction Poster [Show abstract]
  • Niels Clausen, DTU Elektro, Denmark
  • Samel Arslanagic, DTU Elektro, Denmark
  • Olav Breinbjerg, DTU Elektro, Denmark
Using the Nicolson-Ross-Weir (NRW) material parameter extraction method, we compare the difference between using 1 or 10 cells when obtaining the scattering parameters. Obviously these parameters are different, but we see that we practically extract the same propagation constant, wave impedance, permittivity and permeability.
21 - Double Resonance Modes in In-Planed Metamaterial Absorber Cells Poster [Show abstract]
  • H.-M. Lee, Kyonngi University, Korea (South)
This paper presents investigations into the resonant mode behavior of an in-planed metamaterial (MM) absorber cells which are placed parallel to the direction of propagation of the incident electromagnetic wave. The proposed MM unit cell is constructed by an electric-inductive-capacitive (ELC) resonator and a cut-wire on the same side of the flexible polyimide film substrate. The in-planed metallic patterns of the MM absorber exhibit the two different resonance properties. This MM structure can be used for a dual-band microwave absorber for irregular surface applications.
22 - Suppression of Scattering Based on an Ultrathin Metasurface No show [Show abstract]
  • Jie Zhao, Southeast University, China
  • Qiang Cheng, Southeast University, China
  • Li Hua Gao, Southeast University, China
  • Mei Qing Qi, Southeast University, China
  • Tie Jun Cui, Southeast University, China
We propose a method to suppress the scattering based on an ultrathin metasurface in a broad frequency band. The designed metasurface is composed of two kinds of units with different geometries and reflection phases, which provide destructive interference in most of reflected directions, suppressing the main lobe and side lobes significantly of the scattering pattern. The resonance frequencies of two units are elaborately designed to broaden the frequency band. Full-wave numerical simulation results show that a large bandwidth of 1.74 GHz is achieved using the proposed metasurface with the thickness 1 mm, which suppresses the scattering by at least 10 dB. The proposed metasurface may find wide applications in a series areas.
23 - Waveguide Bandpass Filters made of Thick Complementary Small Resonators Poster [Show abstract]
  • Laura Maria Pulido Mancera, Physics - Universidad Nacional de Colombia, Colombia
  • Juan Domingo Baena Doello, Physics - Universidad Nacional de Colombia, Colombia
We explore the potential use of complementary split ring resonators (csrr's) and complementary spirals of two and three turns (csr2 and csr3) to design very compact waveguide filters. We demonstrate its passband response in an experimental and computational form. Besides, it is shown that the design process can be highly simplified by means of a new waveguide model that reduce full wave numerical simulations. Thus, it is possible to design waveguide filters with lengths equal to the thickness of a metallic sheets, leading to an improvement in the design of miniaturized waveguide filters.
24 - Phased arrays of spasers Poster [Show abstract]
  • Alexander Zyablovsky, All-Russia Research Institute of Automatics, Moscow, Russia
  • Alexander Dorofeenko, Institute for Theoretical and Applied Electromagnetics RAS, Moscow, Russia
  • Alexey Vinogradov, Institute for Theoretical and Applied Electromagnetics RAS, Moscow, Russia
  • Alexander Pukhov, Institute for Theoretical and Applied Electromagnetics RAS, Moscow, Russia
  • Eugeniy Andrianov, All-Russia Research Institute of Automatics, Moscow, Russia
  • Alexander Lisyansky, Department of Physics, Queens College of the City University of New York, USA
We demonstrate that interacting spasers arranged in a 2D array of arbitrary size can be mutually synchronized allowing them to supperradiate. For arrays smaller than the free space wavelength, the total radiated power is proportional to the square of the number N of spasers. For larger arrays, the radiation power is linear in N2. However, the emitted beam becomes highly directional with intensity of radiation proportional to N in the direction perpendicular to the plane of the array. Thus, spasers, which mainly amplify near fields, become an efficient source of far field radiation when they are arranged into an array.
25 - Linear to Circular Polarization Converters Based on Self-Complementary Metasurfaces Poster [Show abstract]
  • Juan D. Baena, National University of Colombia, Colombia
  • Alexander P. Slobozhanyuk, National Research University of Information Technologies, Mechanics and Optics, Russia
  • Julián D. Ortiz, Universidad de San Buenaventura, Colombia
  • Pavel A. Belov, National Research University of Information Technologies, Mechanics and Optics, Russia
In this work a technique for designing linear to circular polarization convertors is proposed. It is based on self-complementary metasurfaces graved on metal sheets. This kind of device can receive a linearly polarized wave and convert it into a circularly polarized wave. The main advantage over previous designs is the theoretical constancy of the phase difference between the transmission (or reflection) coefficients for two orthogonal linear polarizations, which is closely equal to 90° for any frequency.
26 - Fourier Modal Method for Efficient Modeling of Periodically Structured Metasurfaces with Unit Cells of Arbitrary Shape Poster [Show abstract]
  • Martin Weismann, University College London, United Kingdom
  • Nicolae C. Panoiu, University College London, United Kingdom
We introduce an expansion of the Fourier modal method for the analysis of periodic structures with oblique walls by using a three-dimensional normal vector field for the correct Fourier series factorization of products of discontinuous functions. Our numerical tests show that the improved method leads to faster convergence as compared to conventional two-dimensional decomposition rules.
27 - Scattering by an Array of Dispersive Metamaterial Wires Poster [Show abstract]
  • Paulo Murilo Castro de Oliveira, Universidade Federal Fluminense, Brazil
  • Carlos A. A. de Carvalho, CNPEM, Campinas, Brazil
  • Solange B. Cavalcanti, UFAl, Maceió, Brazil
  • Luiz E. Oliveira, UNICAMP, Campinas, Brazil
A theoretical study of the scattered field resulting from an array of dispersive metamaterial wires is presented. Solutions for the scattered electric field are written in a form which conveniently combines the metamaterial responses with the geometric details of the array of wires.
28 - Semi-Analytic Technique for the Polarizability Extraction of Chiral Helix Particles Poster [Show abstract]
  • Theodosios Karamanos, Aristotle University of Thessaloniki, Greece
  • Nikolaos Kantartzis, Aristotle University of Thessaloniki, Greece
In this paper, a consistent method for the polarizability matrix retrieval of chiral helix particles is presented. First, it is assumed that, under certain circumstances, the particle can be modelled by electric and magnetic dipoles placed on its shape center. Then, the chiral particles are positioned at a 2D array illuminated by plane waves, and dipole moments are analytically calculated as a function of polarizabilities and incident waves. The scattered fields from the same surface are, also, analytically computed as a function of dipole moments, while the resulting non-linear system is numerically solved for the desired polarizabilities. The proposed algorithm is verified by means of a chiral helix particle at microwave frequencies.
29 - Resonant Mode Dynamics Of Two-Dimensional Ferromagnetic Antidot Lattices In The Effective Stripe Limit Poster [Show abstract]
  • Roberto Zivieri, Università di Ferrara, Dipartimento di Fisica e Scienze della Terra, Italy
The resonant mode dynamics of two-dimensional permalloy antidot lattices is studied in the effective stripe limit. The analysis is performed in the saturated state both micromagnetically and by means of analytical calculations. The dynamical properties of the resonant mode dramatically change passing from a two-dimensional to a one-dimensional magnonic metamaterial.
30 - Predictive Modeling of Far-Field Pattern of a Metamaterial Antenna Poster [Show abstract]
  • Mikala Johnson, University of Washington, USA
  • Adam Bily, Kymeta Corporation, USA
  • Nathan Kundtz, Kymeta Corporation, USA
Using reconfigurable metamaterials in conjunction with the principles of holography, new satellite antennas are under development for broadband communications. We demonstrate a discrete-dipole approximation model of a waveguide-fed planar metamaterial antenna which predicts the far-field pattern of a 2D metamaterial antenna far more accurately than commonly-used models.
31 - Enhanced Modelling of Asymmetric Split-Ring-Resonators in Printed Circuits Poster [Show abstract]
  • Radovan Bojanic, Institute of Physics, University of Belgrade, Serbia
We present an enhanced modelling of magnetic and electric interaction of single asymmetric split-ring resonators (ASRRs) with printed lines. Two simple lumped-element networks consisting of one and two П-cells, which has the same number of independent parameters, are proposed to model the square-shaped ASRRs loaded microstrip line. The equivalent circuit parameters are obtained from the multi-conductor transmission line theory as well as from closed-form expression for the resonance frequency which is extracted from full-wave simulations. Comparison of proposed equivalent circuit results with full-wave simulations has shown that the network consisting of two П-cells exhibits much better agreement in a much wider frequency band than one-cell model.
32 - Flat THz Leaky Wave Antennas Analysis Poster [Show abstract]
  • Unai Beaskoetxea, UPNA, Spain
  • Miguel Beruete, UPNA, Spain
  • Mokhtar Zehar, Lille University, France
  • Amit Agrawal, Syracuse University, USA
  • Shuchang Liu, University of Utah, USA
  • Karine Blary, Lille University, France
  • Abdallah Chahadih, Lille University, France
  • Xiang-Lei Han, Lille University, France
  • Miguel Navarro-Cía, Imperial College London, United Kingdom
  • David Etayo, UPNA, Spain
  • Ajay Nahata, University of Utah, USA
  • Tahsin Akalin, Lille University, France
  • Mario Sorolla, UPNA, Spain
Here, two different THz radiating structures are analyzed, consisting both of a central slot surrounded by annular or straight corrugations. Concentrically grooved antenna presents a moderately high gain. Its radiation and temporal properties are analyzed both numerically and experimentally. For the second case, no appreciable differences in terms of radiation characteristics are observed when the grooves’ profile is changed from square to triangular. Manufactured triangular grooves antenna shows good performance for the experimental measurements at 0.5THz. These results could be of interest for the development of new THz sources and detectors.
33 - Analytical Model of Transmission Line Metamaterial with Asymmetricaly Coupled Split-Ring Resonators Poster [Show abstract]
  • Vojislav Milosevic, Institute of Physics Belgrade, Serbia
  • Branka Jokanovic, Institute of Physics Belgrade, Serbia
  • Radovan Bojanic, Institute of Physics Belgrade, Serbia
Analytical model for studying metamaterials is desirable for at least two reasons: easier design and optimization, and, more importantly, improved understanding and intuition about the underlying physics. Here we present simple model which approximates the transmission line loaded with SRRs, providing qualitative description of resonance-related phenomena.
34 - Beam Scannable 4×4 Patch Array Antenna Using Tunable Metamaterial Phase Shifters Poster [Show abstract]
  • Youn Kwon Jung, Kyung Hee University, Korea (South)
A beam scannable 4×4 patch array antenna using the tunable metamaterial (MTM) phase shifter has been designed. The phase shifter consists of four MTM unit cell composed of a series variable capacitor and a shunt tunable inductor. The inductor is realized by a variable capacitor and quarter wave impedance transformer.
35 - Numerical analysis for reflectance properties of bird-feather fibers Poster [Show abstract]
  • Garuda Fujii, Department of Environmental Science and Technology, Shinshu University, Japan
  • Tsuyoshi Ueta, Physics Laboratory, The Jikei University School of Medicine, Japan
  • Gen Morimoto, amashina Institute for Ornithology, Japan
  • Masayuki Nakamura, Department of Environmental Science and Technology, Shinshu University, Japan
We present reflective properties of bird-feather fibers. The fibers are modeled as two-dimensional photonic crystals containing a number of pores. The finite element method is used to simulate light scattering by the feathers. Reflectivity becomes relatively higher in the wavelength range from 300[nm] to 500[nm]. Strong light scattering and interference are observed in the fibers.
36 - A Circular Polarization Reconfigurable Antenna Based on Reconfigurable Electromagnetic Band-Gap Structures Poster [Show abstract]
  • krishnamoorthy kandasamy, Indian Institute of Technology Bombay, India
  • Basudev Majumdar, Indian Institute of Technology Bombay, India
  • Jayanta Mukherjee, Indian Institute of Technology Bombay, india
  • Kamla Prasan Ray, Socity for Applied Microwave Engineering and Research Mumbai, India
A circular polarization reconfigurable dipole antenna allowing switching between two circular polarizations is proposed. It consists of a linearly polarized dipole antenna and array of polarization dependant EBG structures as the ground plane. Switching elements are used on the ground plane to get the required reflection phase for reconfigurable circular polarization.
37 - Metasurface Cloaks for Large Cylindrical Cluster Configurations Poster [Show abstract]
  • Samel Arslanagic, Technical University of Denmark, Denmark
  • Alexander B. Yakovlev, University of Mississippi, USA
Here, we investigate the performance of metasurfaces used for cloaking of cluster configurations formed by different arrangements of multiple dielectric cylinders and excited by an electric line source. While a suitably designed metasurface can be used to effectively cloak isolated electrically small cylinders, we demonstrate that even electrically large clusters of such particles can be cloaked by covering its constituent cylinders with the metasurface cloaks. This holds for densely packed cylinders due to significantly reduced coupling by the presence of the cloaks. The results may be of great potential for cloaking of large objects by integrating the metasurface elements into the object.
38 - Antenna-Based, Circuit Tunable Sub-Wavelength THz Resonators For Intersubband Photonics Poster [Show abstract]
  • Bruno Paulillo, Univ. Paris-Sud and CNRS, France
  • Raffaele Colombelli, Univ. Paris-Sud and CNRS, France
We demonstrate electromagnetic resonators, operating in the THz range, whose spectral, radiation coupling and confinement properties can be engineered via a circuit, which also acts as an antenna. We discuss the device concept and we experimentally study the tuning of the resonant frequency as a function of variable capacitances and inductances. We then elucidate the optical coupling properties. The radiation pattern, obtained by angle-resolved reflectance, reveals that the system behaves as a closed-loop antenna, i.e. like a magnetic dipole.
39 - Metasurfaces for Angular Filtering and Beam Scanning Poster [Show abstract]
  • Julián D. Ortiz, Universidad de San Buenaventura, Colombia
  • Juan P. del Risco, National University of Colombia, Colombia
  • Juan D. Baena, National University of Colombia, Colombia
  • Vicente Losada, Universidad de Sevilla, Spain
  • Francisco Medina, Universidad de Sevilla, Spain
  • Javier L. Araque, National University of Colombia, Colombia
An angular bandpass filter is designed. The structure is made of an array of chains of interconnected Split Ring Resonators. It may be applied for increasing directivity of antennas or reducing grating sidelobes. The main advantage over previous angular filters is the smaller thickness of the structure which is a small fraction of the wavelength while previous designs had always a thickness near one wavelength.
40 - Light Control with Ultrathin Metasurface Based on Degenerated Image Dipole Array No show [Show abstract]
  • Lei Zhang, Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore, Singapore
  • Jiaming Hao, National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, 200083, Shanghai, China, China
  • Huapeng Ye, Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore, Singapore
  • Swee Ping Yeo, Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore, Singapore
  • Min Qiu, State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, 310027, Hangzhou, China, China
  • Said Zouhdi, Laboratoire de Génie Electrique de Paris, Paris-Sud University, 91192, Gif-Sur-Yvette Cedex, France, France
  • Joel K.W. Yang, Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, 117602, Singapore., Singapore
  • Cheng-Wei Qiu, Department of Electrical and Computer Engineering, National University of Singapore, 117583, Singapore, Singapore
Light control via ultrathin metamaterials has enabled many unprecedented applications. However, it suffers from either low efficiency or narrow bandwidth. We thereby demonstrate a viable solution to realize efficiently control covering Vis/NIR range by a concept of degenerated image dipole array, which can be readily achieved with current nano-fabrication techniques.
41 - High-Impedance Metasurfaces with Interwoven Conductor Patterns Poster [Show abstract]
  • Andrea Vallecchi, University of Sheffield, United Kingdom
  • Richard J. Langley, University of Sheffield, United Kingdom
  • Alexander G. Schuchinsky , Queen’s University of Belfast, United Kingdom
High impedance metasurfaces (HIMSs) formed by interwoven conductor arrays are proposed. Bandwidth comparable with that of the basic square patches is achieved at an order of magnitude smaller unit cells. The presented structures are apt for small mobile terminals and low frequency applications.
42 - Angle Insensitive Structural Colors Based on Polymer and Aluminum for Large Volume Production Poster [Show abstract]
  • Jeppe Sandvik Clausen, Technical University of Denmark, Denmark
  • Emil Hoejlund-Nielsen, Technical University of Denmark, Denmark
  • Alexander Bruun Christiansen, Technical University of Denmark, Denmark
  • Anders Kristensen, Technical University of Denmark, Denmark
  • N. Asger Mortensen, Technical University of Denmark, Denmark
We present a meta-surface based on nano-structured polymer and aluminum for macroscopic coloration of plastic consumer products. The surface utilize the concept of localized surface plasmon resonances (LSPR) to create wavelength dependent reflection leading to bright colors. The resonance position may be tuned by variation of geometrical parameters and is found to be insensitive to viewing angle. The fabrication scheme allows for mass production.
43 - Metamaterial Composite with an Ultra-Broadband Usable Range of over 25 Terahertz No show [Show abstract]
  • Andrew Strikwerda, Technical University of Denmark, Denmark
  • Maksim Zalkovskij, Technical University of Denmark, Denmark
  • Alexander Krabbe, Technical University of Denmark, De
  • Dennis Lund Lorenzen, Technical University of Denmark, Denmark
  • Andrei Lavrinenko, Technical University of Denmark, Denmark
  • Peter Uhd Jepsen, Technical University of Denmark, Denmark
Using a metamaterial composite, we demonstrate a bandpass filter that has only a single transmission mode from 0 to >25 THz. This usable bandwidth matches, or exceeds, that of currently used THz sources and demonstrates a path towards broadband metamaterial design.
44 - Near-Field Superdirectivity for Coupled Dimers of Meta-Atoms Poster [Show abstract]
  • Anna Radkovskaya, M. V. Lomonosov Moscow State University, Russia
  • Lianbo Li, University of Oxford, UK
  • Eleanor Edwards, University of Oxford, UK
  • David J. Edwards, University of Oxford, UK
  • Ekaterina Shamonina, University of Oxford, UK
  • Laszlo Solymar, Imperial College London, UK
We present new results relating far-field and near-field superdirectivity for a dimer endfire array in which only one of the meta-atoms is excited. We deduce conditions for achieving superdirectivity in terms of structure parameters (distances between meta-atoms, their quality factors and the values of mutual coupling) and show that the required sets of parameters are different for far-field and near-field superdirectivity. Our results are relevant to medical imaging applications such as MRI and associated technologies.
45 - Compact Dual-Band Quarter-Wave Metaplate for the Terahertz Band Poster [Show abstract]
  • Víctor Torres, Universidad Pública de Navarra, TERALAB (MmW – THz – IR & Plasmonics Laboratory), Spain
  • Nuria Sánchez, Universitat Politècnica de València, Nanophotonics Technology Center, Spain
  • David Etayo, Universidad Pública de Navarra, Antenna Group, Electric and Electronic Department, Spain
  • Rubén Ortuño, Universidad Pública de Navarra, TERALAB (MmW – THz – IR & Plasmonics Laboratory), Spain
  • Miguel Navarro-Cía, Imperial College London, Optical and Semiconductor Devices Group, Department of Electrical and Electronic Engineering, United Kingdom
  • Alejandro Martínez, Universitat Politècnica de València, Nanophotonics Technology Center, Spain
  • Miguel Beruete, Universidad Pública de Navarra, TERALAB (MmW – THz – IR & Plasmonics Laboratory), Spain
We propose a very compact metasurface inspired on extraordinary transmission subwavelength hole arrays which works as a dual-band quarter-wave plate. Considering a flattening deviation lower than 40% of the optimum value, a fractional bandwidth of 52.1% and 4.3% is theoretically obtained (16.8% and 2.9% in the experiment) at 1 THz and 2.2 THz in a structure as compact as 0.13 and 0.29, respectively.
46 - Compact Novel Coaxial Fed Planar Metamaterial Antenna Withdrawn [Show abstract]
  • Sameer Kumar Sharma, Department of Electronics Engineering, ISM Dhanbad, India
  • Raghvendra Kumar Chaudhary, Department of Electronics Engineering, ISM Dhanbad, India
In this paper, a compact novel coaxial fed planar metamaterial antenna is proposed. The proposed structure shows compact nature having an antenna size of 0.29λo × 0.14λo × 0.02λo and radiating element size of 0.22λo × 0.09λo × 0.02λo with an impedance bandwidth of 118.6 MHz (at centre frequency of 4.32 GHz). The proposed antenna shows excellent monopole-like radiation pattern in H-plane at frequency of 4.32 GHz with low cross polar component in E-plane as well.
47 - Explaining Negative Radiation Pressure in Media having Negative Permittivity and Permeability Poster [Show abstract]
  • Iñigo Liberal, Public University of Navarra, Spain
  • Iñigo Ederra, Public University of Navarra, Spain
  • Ramón Gonzalo, Public University of Navarra, Spain
  • Richard W. Ziolkowski, University of Arizona, USA
We present a case study on the force density exerted by a plane-wave propagat- ing in electrically and magnetically polarizable media. This example illustrates how, while the traditional radiation pressure can be negative, the overall force density including additional gradient and divergence-free dissipative force terms is always positive for passive media. The study also provides additional arguments for the discussion on the different formalisms describing the force distribution within electrically and magnetically polarizable media.
48 - Comparison of Different Numerical Methods for Quality Factor Calculation of Nano and Micro Photonic Cavities Poster [Show abstract]
  • Alireza Taghizadeh, Technical University of Denmark, Denmark
  • Jesper Moerk, Technical University of Denmark, Denmark
  • Il-Sug Chung, Technical University of Denmark, Denmark
Four different numerical methods for calculating the quality factor and resonance wavelength of a nano or micro photonic cavity are compared. Good agreement was found for a wide range of quality factors. Advantages and limitations of the different methods are discussed.
49 - Achievable Bandwidth of Mu-Negative Medium Made of Ring Resonators Considering Losses Poster [Show abstract]
  • Gunyoung Kim, Kyung Hee University, Korea (South)
  • Bomson Lee, Kyung Hee University, Korea (South)
This paper presents some guidelines to achieve wide-bandwidth and low-loss in the design of mu-negative medium consisting of SRR-type resonators. The effective permeability for the ring resonator medium is expressed in a very convenient form to facilitate the analysis of the bandwidth and losses by introducing appropriate structural reduction factors.
50 - Theoretical Study on Bandwidth Enhancement of Negative Impedance Converters with an Emitter Follower Circuit Poster [Show abstract]
  • Yasushi Horii, Kansai University, Japan
A new negative impedance converter (NIC) with an emitter follower (EF) circuit, which generates -100 pF negative capacitance, is demonstrated theoretically. Compared with the NIC without EF, the proposed one can provide 1.7 times wider bandwidth up to 7.2 MHz with an amplitude deviation of less than 2.3 dB.
51 - Development of Composite Metamaterials with Enhanced and Tunable Transmission Spectra in Microwave Range No show [Show abstract]
  • Mihail Ipatov, Universidad del Pais Vasco, Dpto. de Fisica de Materiales, Spain
  • Valentina Zhukova, Universidad del Pais Vasco, Dpto. de Fisica de Materiales, Spain
  • Julian Gonzalez, Universidad del Pais Vasco, Dpto. de Fisica de Materiales, Spain
  • Y. Luo, University of Bristol, Department of Aerospace Engineering, UK
  • H. X. Peng, University of Bristol, Department of Aerospace Engineering, UK
  • F. X. Qin, 1D Nanomaterials Group, National Institute for Material Science, Japan
  • Arkady Zhukov, Universidad del Pais Vasco, Dpto. de Fisica de Materiales [AND] IKERBASQUE, Basque Foundation for Science , Spain
We fabricated polymer based composite materials containing two respective type of ferromagnetic microwires, Fe-rich and Co-rich, and observed band-pass and band stop transmission spectra at microwave frequencies. Further, we investigated the characteristics of the composite materials containing both types of microwires and demonstrated that, when properly designed, the resulting transmission dispersion can be considerably enhanced giving the possibility to design a targeted frequency response. We also demonstrated that the transmission spectra could be tuned by the application of magnetic field due to the presence of the giant magneto-impedance (GMI) effect in the microwires.
52 - Numerical Method To Study Metamaterial Photonic Crystals In Higher Dimension No show [Show abstract]
  • Takamichi Terao, Gifu university, Japan
Metamaterial photonic crystals (MPC) composed of dispersive left-handed materials and right-handed medium were investigated numerically. In two-dimensional (2D) system, the distinct stop band was observed when the dispersive metamaterials are embedded in a positive-refractive-index medium. In addition, the extended plane-wave expansion (EPWE) method is developed, which is a suitable technique to analyze the electromagnetic properties of any dispersive metamaterial composites numerically. The application of the EPWE method to three-dimensional (3D) MPC has been also discussed.
53 - Tunable Metamaterial using Moire Pattern Poster [Show abstract]
  • Jae-Hyung Han, School of Electronics Engineering, Kyungpook National University, Korea (South)
  • Soo-Young Lee, School of Electronics Engineering, Kyungpook National University, Korea (South)
  • Inbo Kim, School of Electronics Engineering, Kyungpook National University, Korea (South)
  • Jung-Wan Ryu, Department of Physics, Pusan National University, Korea (South)
  • Muhan Choi, School of Electronics Engineering, Kyungpook National University, Korea (South)
Using the Moire pattern, we study a tunable metamaterial in transmission property of electromagnetic waves. The Moire pattern is made by overlapping two transparent layers each of which has a periodic metallic pattern, and the size of unit cell or cluster of the resulting superposition pattern varies with the rotation angle of one transparent layer. We propose a new type of reconfigurable metamaterial in which both the size and structural shape of unit cell can be varied simultaneously by using the Moire interference. A numerical calculation confirms that the transmission of electromagnetic wave is modulated by up to approximately 90% at 0.75 THz.
54 - Planar Magnetic Metamaterials for Integrated Micro- and Nanoelectronics No show [Show abstract]
  • Natalia Grigoryeva, Saint-Petersburg Electrotechnical University, Russia
  • Dmitrii Popov, Saint-Petersburg Electrotechnical University, Russia
  • Boris Kalinikos, Saint-Petersburg Electrotechnical University, Russia
Several types of planar magnetic metamaterials were investigated. Modelling of the dispersion characteristics of propagating spin waves in spatially periodically modulated ferromagnetic waveguide is carried out. Presented theory takes into account the dipole-exchange character of propagating spin waves and the inhomogeneity of demagnetizing field in the waveguide cross section.
55 - Spin-Wave Resonance in Arrays of Chiral Meta-Molecules of Ferromagnetic-Metal Poster [Show abstract]
  • Toshiyuki Kodama, Nara Institute of Science and Technology, Japan
  • Satoshi Tomita, Nara Institute of Science and Technology, Japan
  • Nobuyoshi Hosoito, Nara Institute of Science and Technology, Japan
  • Hisao Yanagi, Nara Institute of Science and Technology, Japan
We fabricated arrays of micronmeter-sized chiral meta-molecules of ferromagnetic metals. We investigated the spin-wave resonance of the arrays with varying angles of external dc magnetic field. The chiral meta-molecules show a characteristic resonance signal, which does not shift with a direction of the magnetic field.
56 - Polarization-controlled devices by anisotropic metamaterial lenses Poster [Show abstract]
  • Hui Feng Ma, Southeast University, China
  • Wei Xiang Jiang, Southeast University, China
  • Tie Jun Cui, Southeast University, China
We propose two kinds of anisotropic metamaterials in this paper: anisotropic inhomogeneous metamaterials with gradient index and anisotropic homogeneous metamaterials, and two polarization-controlled functional devices are designed, fabricated and measured by using such anisotropic metamaterials. One device is polarization beam splitter designed by using of anisotropic gradient-index metamaterials, which can separate the vertical and horizontal polarization to different directions independently. Another device is polarization-controlled single metamaterial lens, which can act as spatial filter, transparent cloak and polarizer under the illumination of differently polarized waves. A special anisotropic metamaterial unit cell has been proposed to realize about two polarization-controlled devices.
57 - Tunable Superconducting 2-D Veselago Lens Conceptual Development Poster [Show abstract]
  • Evgeniya Ovchinnikova, National University of Science and Technology (MISIS), Russia
  • Sergey Shitov, Kotel'nikov Institute of Radio Engineering and Electronics, National University of Science and Technology (MISIS), Russia
  • Alexey Ustinov, Physikalisches Institut, Karlsruhe Institute of Technology (KIT), National University of Science and Technology (MISIS), Germany
We study properties of a 2D array of crossing superconducting transmission lines containing Josephson junctions. The array is divided into two areas by a straight interface transparent to microwaves: fix-tuned left-handed transmission lines area and magnetic-field-tunable right-handed transmission lines area (LHTL and RHTL areas). The tunability of the RHTL is provided by SQUIDs which serve as magnetic field-tunable inductors thus modifying the microwave dispersion in the line. We demonstrate here that, due to direct connection of LHTL and RHTL areas, the complete array may behave like an interface of a 2-D Veselago lens.
58 - Optically Reconfigurable Terahertz Metamaterials No show [Show abstract]
  • Carlo Rizza, Department of Science and High Technology, university of Insubria, Italy
  • Alessandro Ciattoni, CNR-SPIN, Italy
  • Lorenzo Columbo, Department of Science and High Technology, university of Insubria, Italy
  • Massimo Brambilla, Dipartimento Interateneo di Fisica, Politecnico di Bari,, Italy
  • Franco Prati, Department of Science and High Technology, university of Insubria, Italy
We theoretically investigate terahertz electromagnetic response of a semiconductor slab where metal-dielectric properties are induced by spatially modulated infrared radiation. More precisely, we consider the terahertz response of a one-dimensional grating photo-generated by the interference of two tilted infrared plane waves. In the homogenized regime we show that the terahertz electromagnetic response can be tailored by varying the grating and it ranges from birefringent to hyperbolic to anisotropic negative dielectric without resorting to microfabrication.
59 - Controlling Liquid Crystal-Loaded Metasurfaces via In-Plane Switching No show [Show abstract]
  • Oleksandr Buchnev, University of Southampton, United Kingdom
  • Jan Wallauer, University of Freiburg, Germany
  • Markus Walther, University of Freiburg, Germany
  • Nina Podoliak, University of Southampton, United Kingdom
  • Malgosia Kaczmarek, University of Southampton, United Kingdom
  • Nikolay I. Zheludev, University of Southampton, United Kingdom
  • Vassili A. Fedotov, University of Southampton, United Kingdom
We demonstrate electrically tuneable and optically thin THz and near-IR metasurfaces loaded with liquid crystals (LC), which for the first time exploit the mechanism of in-plane LC switching at the micro- and nano-scale.
60 - THE EXACT ELECTROMAGNETIC SIMULATION OF DIFFERENT ARTIFICIAL MATERIALS’ FINITE SAMPLES. 2-D AND 3-D MODELS. No show [Show abstract]
  • Nataliya Yashina, Institute of Radiophysics and Electronics of National Academy of Sciences of Ukraine, Ukraine
  • Gerard Granet, Institut Pascal UMR 6602, Blaise Pascal University, 24 av. des Landais, BP 80026, Aubière Cedex, 63177, , France
  • Petr Melezhik, Institute of Radiophysics and Electronics of National Academy of Sciences of Ukraine, 12, Ak. Proskury St., 61085, Kharkov, Ukraine
  • Seil Sautbekov, L.N. Gumilyov Eurasian National University, 5, Kazhimukan St., 010008, Astana, Republic of Kazakhstan
  • Konstyantin Sirenko, 4 King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal, 23955, Saudi Arabia
  • Yuriy Sirenko, L.N. Gumilyov Eurasian National University, 5, Kazhimukan St., 010008, Astana, Republic of Kazakhstan
The rigorous approaches for electromagnetic simulation of various artificial material finite samples are the subject of the report. The advantages of accurate FDTD approach associated with FD analyses create the powerful tool for the study diverse electromagnetic properties of such materials.
61 - Electric-Field Tunable THz Metamaterials Based On Strained SrTiO3 Films Poster [Show abstract]
  • Christelle Kadlec, Institute of Physics, Academy of Sciences of the Czech Republic, Czech Republic
  • Volodymyr Skoromets, Institute of Physics, Academy of Sciences of the Czech Republic, Czech Republic
  • Filip Dominec, Institute of Physics, Academy of Sciences of the Czech Republic, Czech Republic
  • Hynek Němec, Institute of Physics, Academy of Sciences of the Czech Republic, Czech Republic
  • Filip Kadlec, Institute of Physics, Academy of Sciences of the Czech Republic, Czech Republic
  • Jorgen Schubert, Institute of Bio and Nanosystems, Research Centre Jülich, Germany
  • J Heyes, Center for Integrated Nanotechnologies, Los Alamos National Laboratory, USA
  • D Roy Chowdhury, Center for Integrated Nanotechnologies, Los Alamos National Laboratory, USA
  • Hou-Tong Chen, Center for Integrated Nanotechnologies, Los Alamos National Laboratory, USA
  • Petr Kužel, Institute of Physics, Academy of Sciences of the Czech Republic, Czech Republic
We demonstrate the possibility to tune the permittivity of thin films of strontium titanate by means of an electric field. We propose to deposit on top of such films a metallic metamaterial structure designed to resonate at terahertz frequencies. The resonance will then be tunable by applying a bias.
62 - Properties Of Ferrite - Ferroelectric Structures For Tunable Devices No show [Show abstract]
  • Ivan Mylnikov, St. Petersburg Electrotechnical University LETI (ETU), Russia
Abstract—Results of a study of the dielectric and magnetic properties of films with multiferroic properties are reported. Two ways to form multiferroic media are analyzed, by fabrication of multilayer structures containing films of ferroelectrics and ferromagnetics and by introduction of magnetic elements into a ferroelectric in concentrations sufficient for magnetic properties to appear in the composite material.
63 - Sub-Wavelength Anisotropic Layer on Metal Hole Arrays and its Role in Surface Plasmon Enhanced Transmission Poster [Show abstract]
  • Takayuki Matsui, Toyota Central R&D Labs Inc, Japan
  • Hiroyuki Yoshida, Osaka University, Japan
  • Atsushi Miura, Toyota Central R&D Labs Inc, Japan
  • Junji Kobashi, Osaka University, Japan
  • Masanori Ozaki, Osaka University, Japan
We focus on the role of subavelength anisotropic layer on metal hole-arrays, and demonstrate an enhanced 0th order transmission through the device. Anisotropic liquid crystals (LCs) is filled in the nanohole, and also is sandwiched by the top cover layer. Sub-wavelength thick LCs and top cover layer share their roles; former layer for controlling a plasmonic response, and later one for far field optical properties. Based on the results obtained in this study, it is believed that an electrically tunable transmission control element using an LC-containing metal hole-arrays is a distinct possibility.
64 - Design Considerations on Active Matching for Small Antennas with non-Foster Forms Poster [Show abstract]
  • Fernando Albarracin Vargas, Carlos III University in Madrid, Spain
  • Eduardo Ugarte-Muñoz, Carlos III University in Madrid, Spain
  • Daniel Segovia-Vargas, Carlos III University in Madrid, Spain
Most recent works on active matching for one-port and two-port small antennas (ESAs) have taken special care in the design and construction of non-Foster circuits to implement an active matching network. In this paper, new considerations for the design of non-Foster matched two-port antennas are shown, specifically, finding a suitable location for the non-Foster element and viewing the changes in the host antenna performance once a matching network is placed on it.
65 - Eigenmode Spectra of Nanowire Metamaterials with Nematic Liquid Crystal Embedding Medium: Effect of Director Alignment Poster [Show abstract]
  • Olga Kozina, Kotel’nikov Institute of Radio-Engineering and Electronics of Russian Academy of Science, Saratov Branch , Russia
  • Leonid Melnikov, Yuri Gagarin State Technical University of Saratov, Russia
  • Igor Nefedov, Aalto University, School of Electrical Engineering, Finland
Eigenmode spectra of a metamaterial, based on a hexagonal lattice of parallel silver wires, embedded into a nematic liquid crystal, have been calculated using the plane wave method for the cases of parallel and perpendicular alignments of liquid crystal director with respect to the wires. Effect of alignment on the wave propagation and on the hyperbolicity of this medium is discussed.
66 - Broadband Design of a Low-profile, Circularly Polarized Crossed Dipole Antenna on an AMC Surface Poster [Show abstract]
  • Ikmo Park, Ajou University, Korea (South)
A crossed dipole antenna is incorporated with an AMC surface to achieve low-profile and broadband characteristics. Interactions between the crossed dipole and the AMC surface are meticulously considered for optimum design. The antenna yields an impedance bandwidth of 21.6% for |S11| < –10 dB and a 3-dB AR bandwidth of 10.4%.
67 - A generalized method for retrieving effective parameters of metamaterials Poster [Show abstract]
  • Aurore Castanié, Poems, UMA, France
  • Jean-François Mercier, Poems, UMA, France
  • Simon Félix, LAUM, France
  • Agnès Maurel, Institut Langevin, France
The paper deals with the determination of effective parameters of metamaterial structures. The goal is twofolds: to propose a generalization of the retrieval method initially proposed by Fokin and to present a critical study of the reliability of such method. An illustration is given in the case of a layered medium, for which homogenization method is possible.
68 - When Does a Rod Array Exhibit a Negative Index of Refraction? No show [Show abstract]
  • Filip Dominec, Institute of Physics, Czech Academy of Sciences, Czech Republic
  • Christelle Kadlec, Institute of Physics, Czech Academy of Sciences, Czech Republic
  • Petr Kužel, Institute of Physics, Czech Academy of Sciences, Czech Republic
  • Filip Kadlec, Institute of Physics, Czech Academy of Sciences, Czech Republic
A negative index of refraction was computed in an array of high-permittivity dielectric rods parallel to the electric component of electromagnetic field, which is a structure known as a photonic crystal. Using numerical (FDTD) simulations, we explain its metamaterial-like behaviour and determine which array parameters lead to a negative index of refraction.
69 - Qualitative Explanation of the Spectral Properties of Nanoporous Gold Poster [Show abstract]
  • Dirk Jalas, Hamburg University of Technology, Germany
  • Alexander Yu. Petrov, Hamburg University of Technology, Germany
  • Slawa Lang, Hamburg University of Technology, Germany
  • Rashmi Canchi, Hamburg University of Technology, Germany
  • Lihua Shao, Hamburg University of Technology, Germany
  • Jörg Weissmüller, Hamburg University of Technology, Germany
  • Manfred Eich, Hamburg University of Technology, Germany
We explain the spectral properties of nanoporous gold by an simple effective medium model.
70 - Broadband Metamaterial Absorber Based On Random Arrangement of Barium Strontium Titanate Cubes Poster [Show abstract]
  • Eric Lheurette, IEMN Université de Lille 1, France
  • Ludovic Burgnies, IEMN , France
  • Véronique Sadaune, IEMN , France
  • Jianping Hao, IEMN, France
  • Etienne Okada, IEMN, France
  • Didier Lippens, IEMN, France
In this work, we analyze the absorbing properties of Barium Strontium Titanate (BST) cube arrays onto a metal plane. On the principle of Mie resonances, BST cubes exhibits magnetic and electric dipoles. We focus here one the magnetic response of BST cubes which can lead to reflection cancellation by impedance matching owing to the electrical activity in the metal plate and hence to quasi unit absorbance. We show here both numerically and experimentally that the absorption band can be broadened by a random arrangement of the cubes on the metal ground plane.
71 - An Impedance Formulation to Determine Specular Reflection from Metamaterial Absorbers Composed of Capacitively Loaded Strip Inclusions Poster [Show abstract]
  • Ali Eren Culhaoglu, German Aerospace Center, Germany
  • Andrey Osipov, German Aerospace Center, Germany
An impedance approach to describe specular reflection of plane waves with general direction of incidence and polarization from metamaterial absorbers composed of a metasurface of sub-wavelength sized capacitively loaded strip inclusions on a grounded dielectric substrate is studied. The possibility to model the absorber as an impedance boundary with an effective surface impedance is examined and a simple method to determine the specular reflection coefficient at oblique incidence from the normal incidence reflection coefficient is proposed.
72 - Effective Properties Of A Binary Magnonic Crystal Poster [Show abstract]
  • Perla Malagò, Università di Ferrara, Dipartimento di Fisica e Scienze della Terra, Italy
  • Loris Giovannini, Università di Ferrara, Dipartimento di Fisica e Scienze della Terra, Italy
  • Roberto Zivieri, Università di Ferrara, Dipartimento di Fisica e Scienze della Terra, Italy
The effective properties of a two-dimensional periodic binary magnetic system are studied. The magnetic system is composed by cobalt cylindrical nanodots embedded into a permalloy film. For this system it is possible to describe the collective excitations through effective quantities allowing us to describe the system as a magnonic metamaterial.
73 - Strongly-Enhanced Faraday Effect in a Self-Organized Tb3Sc2Al3O12-TbScO3 Eutectic Poster [Show abstract]
  • Andrzej klos, Institute of Electronic Materials Technology, Poland
  • Marcin Gajc, Institute of Electronic Materials Technology, Warsaw, Poland
  • Sebastian Turczynski, Institute of Electronic Materials Technology, Poland
  • Wojciech Gawlik, Jagiellonian University, Krakow, Poland
  • Mariusz Mrozek, Jagiellonian University, Krakow, Poland
  • Vladimir Belotelov, Lomonosov Moscow State University, Russia
  • Evgeni Bezus, Image Processing Systems Institute of the Russian Academy of Sciences, Russia
Tb3Sc2Al3O12 - TbScO3 eutectic was grown by the micro-pulling down method. The Faraday rotation was investigated vs. structure refinement. Values of Verdet constant obtained for eutectic were compared with values of TSAG single crystal. The Verdet constant is much higher than the sum of Verdet constant of the constituent phases due to the structure of the material.
74 - Effective Dynamic Susceptibility Of A One-Dimensional Array Of Ferromagnetic Wires Poster [Show abstract]
  • Roberto Zivieri, Università di Ferrara, Dipartimento di Fisica e Scienze della Terra, Italy
The calculation of the effective dynamic susceptibility for a one-dimensional array of permalloy wires is presented. The calculation is performed by means of the Lagrangian-based dynamical matrix method. The excited spin-wave mode is always the resonant mode of the spectrum. This excitation is the metamaterial wave of the periodic system.
75 - One-Dimensional Holographic Leaky-Wave Antenna Using Subwavelength Grooved Metal Structure No show [Show abstract]
  • Bengeng Cai, Southeast University, China
  • Yunbo Li, Southeast University, China
  • Tie Jun Cui, Southeast University, China
We present a one-dimensional (1D) holographic leaky-wave antenna using subwavelength grooved metal structure, which is fed through a slit with a connected waveguide. On the exit side, we apply a 1D subwavelength grooved metal structure supporting spoof surface plasmon polaritons (SPPs) to reach a broadside leaky-wave radiation. Surface impedance of the corrugated structure is sinusoidally modulated by holography. The full-wave simulation results validate the proposed design.
76 - Analyze Of Dependence On Q Factor In Coupled Split-ring Resonator In Terahertz Region Poster [Show abstract]
  • Tsubasa Nishida, Shinshu University, Japan
  • Hiroki Morita, Shinshu University, Japan
  • Toshihiro Nakanishi, Kyoto University, Japan
  • Masao Kitano, Kyoto University , Japan
  • Fumiaki Miyamaru, Shinshu University, Japan
  • Mitsuo Wada Takeda, Shinshu University, Japan
We numerically investigate the mechanism of transmission characteristics in coupled split-ring resonators. It has been known that there are two independent characteristics in the transmission spectra. In order to investigate the transition from one mechanism to the other, we simulate transmission spectra and surface current distributions.
77 - A Novel Miniaturized Complimentary Split Ring Loaded Electromagnetic Band Gap Structure for Isolation Improvement and Absorber Applications at Microwave Frequencies Poster [Show abstract]
  • Basudev Majumder, Indian Institute of Technology Bombay, India
  • Krishnamoorthy Kandasami, Indian Institute of Technology Bombay, India
  • Jayanta Mukherjee, Indian Institute of Technology Bombay, India
  • Kamla Prasan Ray, Society for Applied Microwave Electronics Engineering and Research, India
A novel compact closed complimentary split ring resonator based Electromagnetic Band gap (C-CSRR-EBG) cell is proposed and its compactness is analyzed numerically. A good reduction level of 21 dB is achieved when 11X3 matrix of the proposed unit cell has been applied to enhance the isolation between the E plane coupled patch antenna arrays. This paper also describes about how the proposed structure can be used for building the radar absorbing material at microwave frequencies with proper lumped resistive loadings.
78 - Patch Antennas on 3D metamaterials Poster [Show abstract]
  • J(Yiannis) VARDAXOGLOU, Loughborough University, United Kingdom
  • Chinwe Njoku, Loughborough University, UK
  • Will Whittow, Loughborough University, UK
Patch antennas on 3D substrates with metallic cubic inclusions have typically been shown to behave like their homogenous equivalent. These strictures have a permeability value less than unity which a diamagnetic behaviour. For media with cuboid-shaped metallic inclusions, it has been shown that they exhibit and anisotropy.
79 - Field and Potential Based Methods in Complex Media Electromagnetics Poster [Show abstract]
  • Michael Havrilla, Air Force Institute of Technology, USA
An overview of field and potential based methods in complex media electromagnetics is presented. Advantages and limitations of each method are discussed and the applicability to various material tensor forms is highlighted. It is shown that scalar potentials can offer significant simplification in the mathematical analysis and its compact notation can more clearly reveal the physical nature of the currents and corresponding fields. Scalar potentials are used to find the Green functions for a uniaxial parallel-plate waveguide to demonstrate the use of scalar potentials.
14:45 - 16:30 - Oral sessions (Monday afternoon 1)
14:45 - Special Session 1: Nonlinearity and nonreciprocity in metamaterials I

Organizer(s): Mikhail Lapine

14:45 - 15:15 - Strong Linear and Magnetic-Free Non-Reciprocity Using Angular-Momentum Biasing Keynote [Show abstract]
  • Andrea Alu, The University of Texas at Austin, USA
  • Dimitrios Sounas, The University of Texas at Austin, USA
The Onsager-Casimir principle states that any physical quantity with odd symmetry under time reversal can break reciprocity. Based on this concept, we present a class of linear and magnetic-free non-reciprocal devices based on biasing with the angular momentum vector. Angular momentum is applied to a resonant ring either physically, by spinning a loading material with a certain velocity, or electrically, by imparting azimuthal spatio-temporal modulation over a substrate, and, like the magnetic field in magneto-optical media, it lifts the degeneracy of states with opposite angular momentum. The proposed technique is applicable to any range of the electromagnetic spectrum, and even to different types of waves, such as radio-frequency, light and acoustic waves. Furthermore, it can be fully realized with integration-friendly materials, such as metals and semiconductors, thus opening a path towards the much sought integration of non-reciprocal components into communication and nanophotonic systems.
15:15 - 15:45 - Optical Activity and Circular Dichroism of 3D-Chiral Holes: Symmetry, Causality, Reciprocity and Reversibility Aspects Invited oral [Show abstract]
  • Maxim Gorkunov, Shubnikov Institute of Crystallography, Russian Academy of Sciences, Moscow , Russia
  • Alexsander Ezhov, Lomonosov Moscow State University, Moscow, Russia
  • Vladimir Artemov, Shubnikov Institute of Crystallography, Russian Academy of Sciences, Moscow , Russia
  • Oleg Rogov, Shubnikov Institute of Crystallography, Russian Academy of Sciences, Moscow , Russia
We report substantial and broadband optical activity and circular dichroism of subwavelength arrays of 3D-chiral holes in a freely suspended silver film. We explain our observations in terms of general physical principles. In particular, we consider the implications of the array in-plane 4-fold symmetry and the difference of the interfaces, verify the appropriate form of the Kramers-Kronig relations, and show how the Lorentz reciprocity lemma connects the circular dichroism with irreversibility due to dissipation. We suggest a possibility of asymmetric transmission through arrays of lower in-plane symmetry.
15:45 - 16:00 - Analytical polarizabilities of nonreciprocal bianisotropic particles Oral [Show abstract]
  • Mohammad Sajjad Mirmoosa, Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, P.O. Box 13000, FI-00076 Aalto, Espoo, Finland, Finland
  • Younes Ra'di, Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, P.O. Box 13000, FI-00076 Aalto, Espoo, Finland, Finland
  • Viktar Asadchy, Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, P.O. Box 13000, FI-00076 Aalto, Espoo, Finland, Finland
  • Constantin Simovski, Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, P.O. Box 13000, FI-00076 Aalto, Espoo, Finland, Finland
  • Sergei Tretyakov, Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, P.O. Box 13000, FI-00076 Aalto, Espoo, Finland, Finland
Here, we derive analytically the electric, magnetic, electro-magnetic, and magneto-electric polarizabilities of two electrically small scatterers called Tellegen-omega and moving-chiral. These two scatterers have been introduced as artificial nonreciprocal bianisotropic particles.
16:00 - 16:15 - Non-Reciprocal Devices Enabled by Metamaterials Oral [Show abstract]
  • Dimitrios Sounas, The University of Texas at Austin, USA
  • Andrea Alu, The University of Texas at Austin, USA
Three new non-reciprocal devices based on metamaterials with enhanced properties compared to their conventional counterparts or completely new functionalities are presented: a spatial isolator based on subwavelength birefringent metasurfaces, a direction selective faraday rotator and/or isolator, and a magnetic-free subwavelength non-linear isolator.
16:15 - 16:30 - 2D Effects in the Propagation of Electron and Strongly Nonlinear Electromagnetic Waves in Graphene Metamaterials Oral [Show abstract]
  • Yuriy Rapoport, Taras Shevchenko National University of Kyiv, Ukraine, Ukraine
  • Vladimir Grimalsky, Autonomous University of State Morelos (UAEM), Mexico
  • Svitlana Koshevaya, Autonomous University of State Morelos (UAEM), Mexico
  • Christian Castrejon-M., Autonomous University of State Morelos (UAEM), Mexico
A resonant behaviour of components of electron disrribution function in 2D “diffraction grating”, with 1D periodicity, and captaring of electron beams by magnetic ring resonator are shown. Theory of 2D strongly nonlinear electromagnetic pulse propagation through multilayered graphene-dielectric is developed and a competition between “longitudinal” and “transfer” focusing is established.
14:45 - Plasmonics II

Session chairperson(s): Martin Wegener

14:45 - 15:15 - Optoelectronics of subnanometric plasmonic nanogaps Invited oral [Show abstract]
  • Javier Aizpurua, Center for Materials Physics CSIC and DIPC, San Sebastian, Spain
  • Ruben Esteban, Center for Materials Physics CSIC and DIPC, San Sebastian, Spain
  • Christos Tserkezis, Center for Materials Physics CSIC and DIPC in San Sebastian, Spain
  • Codruta Marinica, Institut des Sciences Moléculaires d’Orsay, France
  • Andrei Borisov, Institut des Sciences Moléculaires d’Orsay, France
Optical nanogaps are canonical structures where a variety of field enhanced spectroscopies and microscopies are commonly implemented due to the strong field enhancement produced. A combination of classical and quantum descriptions can describe properly the strong nonlocal interactions produced in the gap where complex physical processes such as tunneling, resonant electron transfer, nonlinearities, or controlled active optics can be exploited.
15:15 - 15:30 - Photon-Spin Control of Quantum-Dot Emission with Nanoantennas Oral [Show abstract]
  • Sergey Kruk, Australian National University, Australia
  • Manuel Decker, Australian National University, Australia
  • Isabelle Staude, Australian National University, Australia
  • Stefan Schlecht, Australian National University, Australia
  • Michael Greppmair, Australian National University, Australia
  • Dragomir Neshev, Australian National University, Australia
  • Yuri Kivshar, Australian National University, Australia
We experimentally demonstrate spin-polarized light emission from quantum dots coupled to a single-element metamaterial nanoparticle with resonant multipolar moments. We observe spin-momentum locking resulting in photons of opposite spin emitted in opposite directions.
15:30 - 15:45 - Optical Measurement of the Magnetic Response of Plasmonic Nanoclusters Oral [Show abstract]
  • Virginie Ponsinet, CNRS, France
  • Philippe Barois, CNRS, France
  • Manoj Gali, University of Bordeaux, France
  • Philippe Richetti, CNRS, France
  • Jean Baptiste Salmon, CNRS, France
  • Sergio Gomez, University of Bordeaux, France
  • Aurélie Le Beulze, University od Bordeaux, France
  • Mona Treguer-Delapierre, University of Bordeaux, France
We use a polarization-resolved light scattering experiment to quantify the magnetic response of plasmonic nano-clusters made of metallic satellites surrounding a dielectric core (so-called plasmonic “raspberries”). A supercontinuum tunable laser source is implemented to investigate the magnetic scattering of the nanoclusters over the whole visible spectrum. Plasmonic raspberries assembled from silver and gold satellites are investigated. The results are compared with numerical simulations of the scattering cross-sections.
15:45 - 16:00 - Spectrally matched plasmonic cavities for giant fluorescence enhancement Oral [Show abstract]
  • Maiken H. Mikkelsen, Duke University, Center for Metamaterials and Integrated Plasmonics, USA
  • Alec Rose, Duke University, Center for Metamaterials and Integrated Plasmonics, USA
  • Thang B. Hoang, Duke University, Center for Metamaterials and Integrated Plasmonics, USA
  • Felicia McGuire McGuire, Duke University, Center for Metamaterials and Integrated Plasmonics, USA
  • Jack J. Mock, Duke University, Center for Metamaterials and Integrated Plasmonics, USA
  • Cristian Ciracì, Duke University, Center for Metamaterials and Integrated Plasmonics, USA
  • David R. Smith, Duke University, Center for Metamaterials and Integrated Plasmonics, USA
To take full advantage of plasmonic nanoantennas for enhanced fluorescence, a tunable plasmonic platform is desired. By varying the size of a nanopatch antenna, we tune the plasmonic resonance throughout the excitation and emission spectra of embedded fluorophores, demonstrating a seamless transition between giant fluorescence enhancement and quenching.
16:00 - 16:15 - Giant enhancement of photoluminescence in metal due to the size effect, plasmon resonance and the optical Tamm state Oral [Show abstract]
  • Pavel Melentiev, Institute for Spectroscopy, Russia
  • Anton Afanasiev, Institute for Spectroscopy, Russia
  • Victor Balykin, Institute for Spectroscopy, Russia
We experimentally demonstrate a drastic increase in the rate of radiative process of a nanoscale physical system with implementation of the three physical effects: (1) the size effect, (2) plasmon resonance and (3) the optical Tamm state. As an example of a nanoscale physical system, we choose a single nanohole in Au film when the nanohole is embedded in a photonic crystal of a specific type that maintains an optical Tamm state and as a radiative process - a nonlinear photoluminescence. The efficiency of the nonlinear photoluminescence is increased by more than 10^7 times compared to a bulk material.
16:15 - 16:30 - Discrete Diffraction and Bloch Oscillations in Plasmonic Waveguide arrays Oral [Show abstract]
  • Stefan Linden, University of Bonn, Germany
  • Mahmoud Abdalla, Agronomy Deptartment., Agriculture and Biology Division National Research Centre, , Egypt
We report on the first experimental observation of discrete diffraction and Bloch oscillations in a plasmonic system. For this purpose, we have fabricated evanescently coupled arrays of dielectric loaded surface plasmon polariton waveguides by gray-scale electron-beam lithography. The effective external potential is mimicked by a transverse index gradient of the plasmonic waveguide array. Utilizing leakage radiation microscopy, we directly map the complete evolution of the SPP intensity in a single camera shot. Our experimental results are in excellent agreement with numerical calculations.
14:45 - Microwave and RF Metamaterials

Session chairperson(s): Alessio Monti

14:45 - 15:00 - Experimental Verification of Low-Loss Broadband Anomalous Material Dispersion at Microwaves Oral [Show abstract]
  • Tiago Morgado, Department of Electrical Engineering, Instituto de Telecomunicações University of Coimbra, Portugal
  • João Marcos, Department of Electrical Engineering, Instituto de Telecomunicações University of Coimbra, Portugal
  • João Costa, CST AG, Darmstadt, Germany
  • Jorge Costa, Instituto de Telecomunicações and Instituto Universitário de Lisboa (ISCTE-IUL), Portugal
  • Carlos Fernandes, Instituto de Telecomunicações and Instituto Superior Técnico, Universidade de Lisboa, Portugal
  • Mário Silveirinha, Department of Electrical Engineering, Instituto de Telecomunicações University of Coimbra, Portugal
Some time ago [Phys. Rev. Lett. 102, 193903 (2009)] it was theoretically predicted that a metamaterial formed by an array of nonconnected crossed metallic wires may have low-loss broadband anomalous dispersion such that the refractive index decreases with frequency. Here we report the first experimental demonstration of this remarkable property, showing that differently from conventional glass prisms the transmission angle of a beam refracted by a metamaterial prism decreases with frequency.
15:00 - 15:15 - Implementing Tensor Huygens Surfaces For Polarization Control Using Rotated Loops and Dipoles Oral [Show abstract]
  • Michael Selvanayagam, University of Toronto, Canada
  • George Eleftheriades, University of Toronto, Canada
A tensor Huygens surface consists of a surface described by a tensor electric and magnetic surface impedance. This tensor Huygens surface is now capable of supporting both TE and TM waves for polarization control. We show an example design of a tensor Huygens surface consisting of rotated loops and dipoles. This design takes a TE-polarized wave and converts it into a circularly polarized wave.
15:15 - 15:30 - Realization of a Voltage Tunable Gradient-Index Fishnet loaded with Liquid Crystal Oral [Show abstract]
  • Matthias Maasch, Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Germany
  • María Roig, Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Germany
  • Christian Damm, Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Germany
  • Rolf Jakoby, Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Germany
The realization of voltage tunable gradient-index fishnet metamaterials for the Ka- and mm-band is presented. For the dielectric layer of the fishnet, nematic liquid crystal is used to achieve a continuous voltage tuning of each column of the array. To control the direction of the emitted wave, a gradient in the phase profile over the aperture is introduced. Simulation and measurement results are presented for a prototype at a frequency of 27.5GHz with a beam scanning range of ±5° as well as a design for a frequency of 329GHz with arbitrary scan angles.
15:30 - 15:45 - System-by-Design Paradigm as applied to the Synthesis of Innovative Field Manipulation Devices including Task-Oriented Metamaterials Oral [Show abstract]
  • Giacomo Oliveri, ELEDIA Research Center @ DISI, University of Trento, Italy
  • Filiberto Bilotti, Department of Engineering, “Roma Tre” University, Italy
  • Alessandro Toscano, Department of Engineering, “Roma Tre” University, Italy
  • Andrea Massa, ELEDIA Research Center @ DISI, University of Trento, Italy
The System-by-Design (SbD) paradigm is adopted in this work in order to synthesize innovative microwave devices comprising task-oriented engineered materials. More in detail, the synthesis problem is formulated in the SbD framework in terms of the combination of a set of elementary functional blocks, each one devoted to the analysis/synthesis of a specific portion of the target device. Representative numerical examples will be reported in the presentation concerning the design of different wave manipulating devices within the proposed SbD approach.
15:45 - 16:00 - A Single-Layer Meta-Atom Absorber Oral [Show abstract]
  • Ihar Faniayeu, Gomel State University, Belarus
  • Asadchy Viktar, Aalto University, Finland
  • Tatyana Dzerzhauskaya, Gomel State University, Belarus
  • Ihar Semchenko, Gomel State University, Belarus
  • Sergey Khakhomov, Gomel State University, Belarus
We realized and experimentally tested a conceptually new kind of electrically thin absorbers of electromagnetic waves. The idea is to utilize a single layer of precisely designed meta-atoms. This allows one to design an absorber with unprecedentedly small thickness. The absorber implies absence of a ground plane. High efficiency of the realized structure in the S band is demonstrated. The conceptual idea of the proposed absorber can find many applications especially at optical frequencies.
16:00 - 16:15 - Frequency Scanning Antenna Array with Enhanced Side Lobes Suppression Oral [Show abstract]
  • Nikola Boskovic, Institute of Physics, Belgrade., Serbia
  • Branka Jokanovic, Institute of Physics, Belgrade., Serbia
  • Aleksandar Nesic, Institute IMTEL-Communication, Belgrade., Serbia
In this paper we present a novel design of frequency-scanning antenna array consisting of different pentagonal dipoles fed by balanced microstrip line. Impedances of the dipoles are calculated to obtain high side lobes suppression. Feeding network between radiating elements contains four elongated split-ring resonators (SRRs) loaded balanced microstrip line in order to increase the frequency dependent phase difference between dipoles. Scanning antenna exhibits gain around 11.5 dBi, SLL better than 18 dB for the beam scanning of 30 degrees in frequency range 10 to 10.25 GHz.
16:15 - 16:30 - Interwoven Spiral Arrays on Ferrite-Dielectric Substrates for High-Impedance Metasurfaces Oral [Show abstract]
  • Gwendal Cochet, Lab-STICC, France
  • Andrea Vallecchi, of Sheffield, Department of Electronics and Electrical Engineering, UK
  • Alexander Schuchinsky, ECIT, UK
  • Patrick Queffelec, Lab-STICC, France
  • Vincent Laur, Lab-STICC, France
  • Robert Cahill, ECIT, UK
A high impedance metasurface (HIMS) composed of the arrays of intertwined planar spirals on thin (~0.1) ferrite-dielectric substrate is proposed. The HIMS exhibits fractional bandwidth in excess of 10% and excellent angular and polarisation stability of the circular polarised waves at oblique incidence.
16:30 - 17:00 - Coffee break (Monday afternoon)
17:00 - 19:00 - Oral sessions (Monday afternoon 2)
17:00 - Special Session 1: Nonlinearity and nonreciprocity in metamaterials II

Organizer(s): Mikhail Lapine

17:00 - 17:30 - Enhancement Mechanisms for the Nonlinear Optical Response of Metamaterials Invited oral [Show abstract]
  • Martti Kauranen, Tampere University of Technology, Finland
  • Robert Czaplicki, Tampere University of Technology, Finland
  • Hannu Husu, Centre for Metrology and Accreditation, Finland
  • Jouni Mäkitalo, Tampere University of Technology, Finland
  • Roope Siikanen, Tampere University of Technology, Finland
  • Joonas Lehtolahti, University of Eastern Finland, Finland
  • Janne Laukkanen, University of Eastern Finland, Finland
  • Markku Kuittinen, University of Eastern Finland, Finland
We discuss various mechanisms that are important in optimizing the second-order nonlinear optical response of metamaterials based on arrays of plasmonic metal nanoparticles. The response is enhanced by high quality particle resonances as well as interparticle coupling through the lattice. In addition, geometrical effects may play an unexpected role, superseding straightforward resonant effects.
17:30 - 18:00 - Nonlinear and Singular Optics in Metamaterials Invited oral [Show abstract]
  • Natalia Litchinitser, University at Buffalo, The State University of New York, USA
  • Zhaxylyk Kudyshev, University at Buffalo, The State University of New York, USA
  • Mikhail Shalaev, University at Buffalo, The State University of New York, USA
  • Jingbo Sun, University at Buffalo, The State University of New York, USA
  • Scott Will, University at Buffalo, The State University of New York, USA
This talk will be focused on nonlinear and singular optical effects in metamaterials and metasurfaces. We will also discuss novel approaches to manipulating the electromagnetic waves using virtual metamaterials based on the nonlinear light filamentation phenomenon in air.
18:00 - 18:15 - Nonlinear Spectroscopy of Electric and Magnetic Resonances in All-Dielectric Oligomers Oral [Show abstract]
  • Maxim Shcherbakov, Faculty of Physics, Lomonosov Moscow State University, Russia
  • Dragomir Neshev, Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Australia
  • Alexander Shorokhov, Faculty of Physics, Lomonosov Moscow State University, Russia
  • Isabelle Staude, Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Australia
  • Elizaveta Melik-Gaykazyan, Faculty of Physics, Lomonosov Moscow State University, Russia
  • Andrey Miroshnichenko, Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Australia
  • Jason Dominguez, Center for Integrated Nanotechnologies, Sandia National Laboratory, USA
  • Ben Hopkins, Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Australia
  • Igal Brener, Center for Integrated Nanotechnologies, Sandia National Laboratory, USA
  • Andrey Fedyanin, Faculty of Physics, Lomonosov Moscow State University, Russia
  • Yuri Kivshar, Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Australia
We report the experimental results of third harmonic generation (THG) spectroscopy of silicon nanodisk oligomers that reveal the contributions of magnetic and electric dipolar resonances to the third-order nonlinear-optical response. By changing the oligomer geometry we bring both resonances to a partial overlap, which causes a strong THG enhancement with respect to the unstructured silicon.
18:15 - 18:30 - Giant optical nonlinearity of a single plasmonic nanostructure Oral [Show abstract]
  • Pavel Melentiev, Institute for Spectroscopy, Russia
  • Anton Afanasiev, Institute for Spectroscopy, Russia
  • Victor Balykin, Institute for Spectroscopy, Russia
We present results of experimental research of a strong nonlinear optical interaction of light with a single plasmonic nanostructure: (1) the influence of the laser radiation parameters, material and geometry of the nanostructures and their environment on the efficiency of the generation of harmonics and multi-photon light-induced luminescence; (2 ) the possibility of a significant increase in the quantum efficiency of nonlinear processes due to size effects , excitation of plasmon oscillations , resonant excitation of optical Tamm states , (3) the practical application of the giant optical nonlinearity of nanostructures to implement (i) all-optical display , (ii) nanolocalized and femtosecond laser sources , (iii) optical nanoscale multi-order auto correlator.
18:30 - 18:45 - Nonlinear Control of Enhanced Scattering in Multi-Layer Nanowires Oral [Show abstract]
  • Ali Mirzaei, Australian National University, Australia
  • Ilya Shadrivov, Australian National University, Australia
  • Nina Zharova, Institute of Applied Physics, Russia
  • Andrey Miroshnichenko, Australian National University, Australia
  • Yuri Kivshar, Australian National University, Australia
We demonstrate the nonlinear control of scattering from a multi-layer cylindrical structure and observe the substantial enhancement of the superscattering due to a local field enhancement. We develop a novel semi-analytical method to analyse the effects of both linear and nonlinear scattering.
18:45 - 19:00 - Bright Cavity Solitons In Plasmon-Polariton Metamaterials Oral [Show abstract]
  • Alex Yulin, Centro de Fisica Teorica e Computacional and Departamento de Fisica, Faculdade de Ciencias,, Portugal
  • Vladimir Kuzmiak, Institute of Photonics and Electronics AS CR, v.v.i., Czech Republic
  • Sergey Eyderman, Department of Physics, University of Toronto, Canada
We investigate the formation and the dynamics of dual-core dissipative solitons in the cavities with internal plasmonic resonances. The bifurcation diagrams of the solitons are calculated and their stability is studied. The dynamics of the soliton and the formation of the coupled oscillating states (dissipative breathers) for single core solitons are studied by direct numerical modeling of the master equations.
17:00 - Plasmonics III

Session chairperson(s): Francisco Garcia-Vidal

17:00 - 17:30 - Realization of High-Quality Metamaterials Resonators Adding Metallic Structures to Dielectric Slabs Invited oral [Show abstract]
  • Costas Soukoulis, Ames Lab & Iowa State Univ.& IESL-FORTH, USA
Most metamaterials (MMs) to date consist of small metallic structures that are effectively replacing atoms as the basic unit of interaction with EM waves. Unfortunately, the use of metals results in substantial dissipation due to ohmic heating at optical frequencies. We combine experimental methods with computer simulations to develop a set of novel MMs exhibiting resonances that store energy mainly in a dielectric material. This avoids resonant loss in the metals and we indeed demonstrate electric and magnetic metamaterial resonators with very large quality factors. The resulting structures can be straightforwardly scaled at optical frequencies to create low-loss MMs with a wide range of properties.
17:30 - 18:00 - Practical Nanophotonics with Plasmonic Ceramics Invited oral [Show abstract]
  • Nathaniel Kinsey, Purdue University, USA
  • Jongbum Kim, Purdue University, USA
  • Ludmila Prokopeva, Purdue University, USA
  • Marcello Ferrera, Purdue University, USA
  • Viktoriia Babicheva, Technical University of Denmark, Denmark
  • Aveek Dutta, Purdue University, USA
  • Sajid Choudhury, Purdue University, USA
  • Alexander Kildishev, Purdue University, USA
  • Vladimir Shalaev, Purdue University, USA
  • Alexandra Boltasseva, Purdue University, USA
Plasmonics has long been synonymous with the noble metals. However, it is becoming more apparent that these materials are not ideal for every application. Plasmonic ceramic materials such as transition metal nitrides and transparent conducting oxides are important classes of materials for practical plasmonic devices such as waveguides, modulators, and metamaterials. We illustrate that devices based on these materials can achieve similar or greater performance than noble metal based devices with additional benefits.
18:00 - 18:15 - Spatial control of surface plasmon polariton excitation at planar metal surface No show [Show abstract]
  • Zhichao Ruan, Department of Physics, Zhejiang University, China
  • Hui Wu, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, China
  • Min Qiu, Department of Optical Engineering, Zhejiang University, China
  • Shanhui Fan, Ginzton Laboratory, Department of Electrical Engineering, Stanford University, US
We propose that the surface plasmon polariton excitation through the prism coupling method can be enhanced by tailoring the relative phase for spatial components. We show that through the phase modulation the excited field is concentrated to a hot energy spot, and the field intensity is dramatically enhanced about three folds.
18:15 - 18:30 - Hot Electron Photoemission from Plasmonic Nanoparticles: Role of Transient Absorption in Surface Mechanism Oral [Show abstract]
  • Alexander Uskov, P. N. Lebedev Physical Institute, Russia
  • Igor Protsenko, Advanced Energy Technologies Ltd, Russia
  • Renat Ikhsanov, Research Institute of Scientific Instruments, State Nuclear Energy Corporation “Rosatom”, Russia
  • Viktoriia Babicheva, National Research University for Information Technology, Mechanics, and Optics, Russia
  • Sergei Zhukovsky, DTU Fotonik, Technical University of Denmark, Denmark
  • Andrei Lavrinenko, DTU Fotonik, Technical University of Denmark, Denmark
  • Eoin O’Reilly, Tyndall National Institute, Ireland
  • Hongxing Xu, Wuhan University and Chinese Academy of Sciences, China
We analyze and compare surface- and volume-based internal photoelectric effects from spherical nanoparticles, obtaining analytical expressions for the photoemission rate in both cases. Similar to results for a flat metal surface, one can show that the surface mechanism prevails, since it is unaffected by detrimental hot electron collisions. Transient absorption results from dielectric permittivity discontinuity at the nanoparticle boundary and leads to a substantial (by ~5 times) increase of the photoelectron emission rate.
18:30 - 18:45 - Direct Observation of Sub 100nm Focusing Using Short Wavelength Plasmons Oral [Show abstract]
  • Bergin Gjonaj, Electrical Engineering department, Technion, Israel
  • Asaf David, Electrical Engineering department, Technion, Israel
  • Yohai Blau, Electrical Engineering department, Technion, Israel
  • Grisha Spektor, Electrical Engineering department, Technion, Israel
  • Shimon Dolev, Electrical Engineering department, Technion, Israel
  • Guy Bartal, Electrical Engineering department, Technion, Israel
We show direct measurement of focusing of short-wavelength surface plasmon polaritons to a sub 100nm spot size, using a modified plasmon platform - silver film on a SiN membrane. The polaritons are mapped directly by apertureless near-field optical microscope. Short wavelength and 80nm spot are directly mapped.
18:45 - 19:00 - Plasmonic Modulator Using CMOS-Compatible Material Platform Oral [Show abstract]
  • Viktoriia Babicheva, DTU Fotonik, Technical University of Denmark, Denmark
  • Nathaniel Kinsey, Purdue University, US
  • Gururaj Naik, Stanford University, US
  • Marcello Ferrera, Purdue University, US
  • Andrei Lavrinenko, DTU Fotonik, Technical University of Denmark, Denmark
  • Vladimir Shalaev, Purdue University, US
  • Alexandra Boltasseva, Purdue University, US
In this work, a design of ultra-compact plasmonic modulator is proposed and numerically analyzed. The device layout utilizes alternative plasmonic materials such as transparent conducting oxides and titanium nitride which potentially can be applied for CMOS compatible process. The modulation is obtained by varying the carrier concentration of the transparent conducting oxide layer and exciting plasmonic resonance in the structure. The analysis shows that an extinction ratio of 46 dB/µm can be achieved at the telecommunication wavelength.
17:00 - Millimeter wave and THz metamaterials

Session chairperson(s): Anthony Grbic

17:00 - 17:30 - In Memoriam of Prof. Perruisseau-Carrier: his contributions to Reconfigurable Periodic Structures and Metamaterials Invited oral [Show abstract]
  • Juan Ramon Mosig, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
<p> In this presentation we will review our recent activity related to the dynamic reconfiguration of periodic structures and their application. Different reconfigurable periodic ‘meta’ transmission lines, reconfigurable uniform and a-periodic metasurfaces, will be discussed together with their applications. The proposed concepts are implemented at various frequencies from microwave to terahertz, using different technologies including semiconductors diodes, metal MicroElectroMechanical systems (metal-MEMS), Graphene, and dielectric electro-active polymers (DEAP).</p>
17:30 - 18:00 - THz Polarization Control with Chiral and Bi-anisotropic Metamaterials Invited oral [Show abstract]
  • Maria Kafesaki, Foundation for Research and Technology Hellas, Greece
We discuss a variety of passive and optically controllable THz chiral and bi-anisotropic structures which show strong chiral response represented by strong optical activity and/or circular dichroism and/or asymmetric cross-polarized transmission. The optically controllable structures are created by introducing properly in the passive structures photoconducting Si, which upon illumination is transformed from an insulating to a conducting state, altering thus the response of the structures.
18:00 - 18:15 - All-metallic Zoned Fishnet Metamaterial Lens For The Unlicensed Millimetre-wave V-band Oral [Show abstract]
  • Víctor Pacheco-Peña, Universidad Pública de Navarra, Spain
  • Bakhtiyar Orazbayev, Universidad Pública de Navarra, Spain
  • Unai Beaskoetxea, Universidad Pública de Navarra, Spain
  • Víctor Torres, Universidad Pública de Navarra, Spain
  • Miguel Beruete, Universidad Pública de Navarra, Spain
  • Miguel Navarro-Cía, Imperial College London, United Kingdom
A diffractive lens derived from a fishnet metamaterial lens is designed to reduce the volume of the element 60% while keeping the properties unaltered. The all-metallic self-supporting diffractive optical element operates at 56.7 GHz in the negative near-zero refractive index regime
18:15 - 18:30 - Ultrasensitive TerahertzWaveguide Modulators Using Multilayer Graphene Metamaterials Oral [Show abstract]
  • Irina Khromova, Public University of Navarra, Spain
  • Andrei Andryieuski, Technical University of Denmark, Denmark
  • Andrei Lavrinenko, Technical University of Denmark, Denmark
We study terahertz-infrared electromagnetic properties of multilayer graphene-dielectric metamaterial and present novel waveguide-based devices: modulators with high modulation depth (>38dB at 0.07eV graphene's Fermi energy change) or extreme sensitivity (modulation depth of >13.2dB at 0.001eV Fermi energy variation), and tunable passband filters (10% central frequency shift per 0.004eV Fermi energy change).
18:30 - 18:45 - A MEMS Reconfigurable Metamaterial for Terahertz Filter Applications Oral [Show abstract]
  • Zhengli Han, The University of Tokyo, Japan
  • Kenta Kohno, The University of Tokyo, Japan
  • Tapio Makela, VTT Microsystems and Nanoelectronics, Finland
  • Tomi Haatainen, VTT Microsystems and Nanoelectronics, Finland
  • Hiroyuki Fujita, The University of Tokyo, Japan
  • Kazuhiko Hirakawa, The University of Tokyo, Japan
  • Hiroshi Toshiyoshi, The University of Tokyo, Japan
We propose and demonstrate a tunable terahertz band stop filter by using metamaterial with a reconfiguring RF-MEMS (radio frequency – micro electro mechanical systems) capacitor within the split-ring resonator (SRR) based on electrostatic actuation. The device is compatible with the surface micromachining process.
18:45 - 19:00 - Improving sensitivity and defying residual stress in MEMS bi-material terahertz sensors with metamaterial structures and self-leveling configuration Oral [Show abstract]
  • Fabio Alves, Naval Postgraduate School, USA
  • Dragoslav Grbovic, Naval Postgraduate School, USA
  • Josiel Arruda, Instituto Tecnologico de Aeronautica, Brazil
  • Ricardo Santos, Instituto Tecnologico de Aeronautica, Brazil
  • Gamani Karunasiri, Naval Postgraduate School, USA
Metamaterial perfect absorber structures are used to significantly improve the sensitivity of MEMS THz bi-material sensors and multifold self-leveling configurations have been employed to reduce the intrinsic deformation due to residual stress, making these devices very attractive to be used in THz imaging systems with external optical readout.
19:00 - 20:00 - Welcome reception / buffet dinner
26 August 2014 / Start time: 9 h 0 min
09:00 - 10:00 - Plenary session II
09:00 - Plenary Session II

Session chairperson(s): Andrea Alu

09:00 - 10:00 - All-dielectric nanophotonics: from ”magnetic light” to Fano metasurfaces Plenary [Show abstract]
  • Yuri Kivshar, Nonlinear Physics Center, Australian National University, Australia
This talk will review the emerging field of all-dielectric nanophotonics and metamaterials that offers unique advantages over metallic plasmonic structures and provides new and competitive alternatives for nanoantennas and optical metamaterials. It will discuss a variety of physical effects ranging from “magnetic light” to magnetic Fano resonances and all-dielectric metasurfaces.
10:00 - 10:30 - Coffee break (Tuesday morning)
10:30 - 12:00 - Oral sessions (Tuesday morning)
10:30 - Special Session 2: Fabrication and characterization of metamaterials I

Organizer(s): Alexandra Boltasseva

10:30 - 11:00 - Tunable Metasurfaces and Metamaterials Keynote [Show abstract]
  • Harry Atwater, California Institute of Technology, USA
  • Georgia Papadakis, California Institute of Technology, USA
  • Howard Lee, California Institute of Technology, USA
  • Victor Brar, California Institute of Technology, USA
  • Michelle Sherrott, California Institute of Technology, USA
  • Mn Seok Jang, Seoul National University, Korea
  • Laura Kim, California Institute of Technology, USA
Field effect gate tuning of the carrier density in metal-dielectric-semimetal heterostructures enables the realization of tunable metasurfaces and metamaterials operating at visible to mid-infrared frequencies. We illustrate this approach with a tunable graphene absorbing metasurface and a frequency-tunable epsilon near zero metamaterial with conducting oxide active layers, and discuss other tunable metasurface applications.
11:00 - 11:30 - ´Novel switchable and reconfigurable active plasmonic materials and devices Invited oral [Show abstract]
  • Harald Giessen, University of Stuttgart, Germany
  • Nikolai Strohfeldt, University of Stuttgart, Germany
  • Andreas Tittl, University of Stuttgart, Germany
  • Frank Neubrech, University of Stuttgart, Germany
  • Martin Schäferling, University of Stuttgart, Germany
  • Ronald Griessen, Vrije Universiteit Amsterdam, The Netherlands
  • Uwe Kreibig, RWTH Aachen, Germany
We present a number of new materials and hybrid structures for active and reconfigurable nanoplasmonics. In particular, we use the metal-to-insulator transition of Yttrium hydrides to completely switch the particle plasmon on and off in nanoantennas with their spectral response tuned to the near infrared.
11:30 - 12:00 - Flexible metamaterials for advanced photonics applications Invited oral [Show abstract]
  • Peter Reader-Harris, School of Physics and Astronomy, University of St Andrews, United Kingdom
  • Monika Pietrzyk, School of Physics and Astronomy, University of St Andrews, United Kingdom
  • Yufang Shen, School of Physics and Astronomy, University of St Andrews, United Kingdom
  • Blair Kirkpatrick, School of Physics and Astronomy, University of St Andrews, United Kingdom
  • Andrea Di Falco, School of Physics and Astronomy, University of St Andrews, United Kingdom
We present our recent results on the design, fabrication and applications of flexible metamaterials in the visible and near infrared range. In particular, we demonstrate broad angle spectral filtering for lab-on-fibre applications, the realisation of metamaterials with epsilon-near-zero response and their dynamical tuning via all-optical methods.
10:30 - Cloaking and invisibility

Session chairperson(s): Vincenzo Galdi

10:30 - 11:00 - Macroscopic Three-Dimensional Broadband Invisibility Cloak in the Diffusive Regime Invited oral [Show abstract]
  • Robert Schittny, Karlsruhe Institute of Technology (KIT), Germany
  • Muamer Kadic, Karlsruhe Institute of Technology (KIT), Germany
  • Martin Wegener, Karlsruhe Institute of Technology (KIT), Germany
We design, fabricate, and characterize macroscopic omnidirectional broadband three-dimensional polarization-independent invisibility cloaks in the diffusive regime of light propagation. Our experiments on simple cylindrical and spherical core-shell geometries show excellent cloaking throughout the entire visible spectrum.
11:00 - 11:15 - Anticonductors: Cloaks for Uniform Static Currents Oral [Show abstract]
  • Lars Kroon, Swedish Defence Research Agency, Sweden
We show that uniform static currents can be perfectly cloaked by homogenous and isotropic conductivities. These structures, consisting of an electrical insulator coated with a conductive shell with specific geometry and relation to the background conductivity, can make a region of space inaccessible to electric impedance tomography.
11:15 - 11:30 - Active Cloaking of Finite Defects for Flexural Waves in Elastic Plates Oral [Show abstract]
  • Jane O'Neill, University of Liverpool, United Kingdom
  • Ozgur Selsil, University of Liverpool, United Kingdom
  • Ross C McPhedran, University of Liverpool, University of Sydney, United Kingdom, Australia
  • Alexander B Movchan, University of Liverpool, United Kingdom
  • Natalia V Movchan, University of Liverpool, United Kingdom
We present a new analytical method to create an active cloak of a rigid, clamped inclusion in a Kirchhoff plate, for incident plane or cylindrical waves. We place control sources at small distances from the scatterer and choose their intensities to eliminate propagating orders of the scattered wave. Finally, we successfully cloak an arbitrarily shaped scatterer by deriving a semi-analytical, asymptotic algorithm.
11:30 - 11:45 - Metasurface Cloak Performance Near-by Multiple Line Sources and PEC Cylindrical Objects Oral [Show abstract]
  • Samel Arslanagic, Technical University of Denmark, Denmark
  • William H. Yatman, Technical University of Denmark, Denmark
  • Signe Pehrson, Technical University of Denmark, Denmark
  • Alexander B. Yakovlev, University of Mississippi, USA
The performance/robustness of metasurface cloaks to a complex field environment which may represent a realistic scenario of radiating sources is presently reported. Attention is devoted to the cloak operation near-by multiple line sources and multiple perfectly electrically conducting cylinders. It is shown that the metasurface cloaks, initially designed to cloak an isolated dielectric cylinder excited by a single line source, retain their ability to cloak in these new, more realistic, excitation cases.
11:45 - 12:00 - Design of multi-layer mantle cloaks Oral [Show abstract]
  • Alessio Monti, Roma Tre University, Italy
  • Lorenza Tenuti, University of Trento, Italy
  • Giacomo Oliveri, University of Trento, Italy
  • Andrea Alù, University of Texas at Austin, USA
  • Andrea Massa, University of Trento, Italy
  • Alessandro Toscano, Roma Tre University, Italy
  • Filiberto Bilotti, Roma Tre University, Italy
In this work, we present a procedure to design mantle cloaking devices made of multi-layered metasurfaces. If properly engineered, such covers are able to individually cancel several modes contributing to the scattering from a given object and, differently from traditional mono-layer mantle cloaks, reduce the observability of objects that cannot be considered electrically small. The analytical formulation for cylindrical and spherical geometries is outlined and some examples are provided. Moreover, we propose a potential application of multi-layered mantle cloaks to reduce the blockage effect on antennas due passive supporting structures, without affecting their mechanical characteristics.
10:30 - Nonlinear Metamaterials I

Session chairperson(s): Igal Brener

10:30 - 11:00 - Nonlinear Hyperbolic Metamaterials Invited oral [Show abstract]
  • Anatoly Zayats, King's College London, United Kingdom
We will discuss experimental studies and numerical modeling of second- and third-order nonlinear optical processes in hyperbolic metamaterials based on metallic nanorods. Second-harmonic generation and ultrafast Kerr-type nonlinearity originating from metallic component of the metamaterial will be considered.
11:00 - 11:30 - Transistor-Based Nonlinear and Tunable Metamaterials Invited oral [Show abstract]
  • Steven Cummer, Duke University, USA
  • Alex Katko, Duke University, USA
We report recent experimental work focusing on the development of new approaches to creating nonlinear, tunable, and time-varying metamaterials by exploiting the additional degrees of freedom obtained from embedded transistors.
11:30 - 12:00 - Nonlinear Beam and Vortex Generation using Double Negative and Hyperbolic Metamaterials Invited oral [Show abstract]
  • Allan Boardman, University of Salford, United Kingdom
  • Peter Egan, University of Salford, United Kingdom
A wide range of metamaterials is examined, with an emphasis upon vortices, magnetooptic control, and nonlinear uniaxial anisotropic materials. The outcomes of the investigations promise a new range of exotic optical switching. A special emphasis will be placed upon the pioneering development of nonlinear globally exciting metamaterials.
12:00 - 13:15 - Lunch break (Tuesday)
13:15 - 14:45 - Poster session II
13:15 - Poster session II
1 - Ag Nanoparticle Shape Design in Thin Film Silicon Solar Cells for Broadband Plasmonic Scattering Effect Enhancement Poster [Show abstract]
  • Hakyong Lee, Graduate School of Yonsei University, Korea (South)
  • Soohwan Byun, Graduate School of Yonsei University, Korea (South)
  • Jeonghoon Yoo, Department of Mechanical Engineering, Korea (South)
In spite of low manufacturing cost advantage of thin film solar cells, its low energy conversion problem should be solved to spread their applications. There are numerous researches to enhance the efficiency of thin film solar cells so far. Among them using the localized surface plasmon (LSP) effect can be a promising solution to overcome the problem. The LSP effect of a nanoparticle is directly related to its shape and size; however, the detail shape or size of a nanoparticle is difficult to be selected depending only on theoretical or experimental approaches. In this study, we adopted the topology optimization scheme based on the phase field method to determine the optimal shape of a silver (Ag) nanoparticle positioned on the upper surface of the absorbing layer considering the broadband wavelength from 450nm to 850nm.
2 - Comparative Analysis of Plasmonic Enhancement of Florescence and Raman Scattering No show [Show abstract]
  • Greg Sun, University of Massachusetts Boston, USA
  • Jacob Khurgin, Johns Hopkins University, USA
We present a comparative study on the enhancement of florescence and Raman processes by metal nanoparticles. Taking an analytical approach, we show the physics behind strikingly different orders of magnitude in enhancement that have been observed, provide fundamental explanation for not observing quenching of Raman process, and outline the path to optimization of both photoluminescence and Raman enhancement.
3 - Non-resonant-type Ultra-small Plasmonic Cavity Refractive Index Sensor Withdrawn [Show abstract]
  • Soon-Hong Kwon, Department of Physics, Chung-Ang University, Korea (South)
We propose a non-resonant-type refractive index sensor, consisting of high/low-indices dielectric rod with silver. SPPs are confined in a deep subwavelength region by mode-gaps. The reflectivity of one mirror decreases as the index of the mirror made by analyte. The difference in the emission efficiencies through the two mirrors depends directly on the index of the mirror.
4 - Laser-induced Optical Anisotropy in a 2-dimensional Array of Nanodots No show [Show abstract]
  • Ilya Razdolski, Radboud University Nijmegen, Institute for Molecules and Materials, Netherlands
  • Viktor Krutyanskiy, Department of Physics, Moscow State University, Russia
  • Tatyana Murzina, Department of Physics, Moscow State University, Russia
  • Theo Rasing, Radboud University Nijmegen, Institute for Molecules and Materials, Netherlands
  • Alexey Kimel, Radboud University Nijmegen, Institute for Molecules and Materials, Netherlands
Pump-probe polarimetry of a 2D regular lattice of nanodots demonstrates that femtosecond laser excitation effectively changes the optical anisotropy of the array. Ultrafast optical Kerr effect, acoustic eigenmodes of the nanodots and acoustic phonons in the glass substrate are shown to contribute to the observed polarisation rotation of the light.
5 - The Magnetoelectric Impact on Surface Modes of the Plasmonic Structures with Chromium (III) Oxide No show [Show abstract]
  • Daria Ignatyeva, Lomonosov Moscow State University, Russia
  • Andrey Kalish, Lomonosov Moscow State University, Russia
  • Vladimir Belotelov, Lomonosov Moscow State University, Russia
  • Anatoly Zvezdin, A.M. Prokhorov General Physics Institute Russian Academy of Science, Russia
The work is devoted to the investigation of the surface plasmon polaritons of the metal – dielectric structures containing the materials with magnetoelectric properties, chromium (III) oxide namely. The analysis of various geometries of chromium oxide orientation shows that the magnetoelectric effect influences the surface wave polarization, localization and dispersion. Moreover, such hybrid plasmonic structure can be used as a polarization- and dispersion-sensitive instrument to reveal the magnetoelectric coupling and the phase transition to the spin-flop phase.
6 - Metal Nanocomposites Poster [Show abstract]
  • Søren Fischer, DTU Nanotech, Denmark
  • Basil Uthuppu, DTU Nanotech, Denmark
  • Mogens Jakobsen, DTU Nanotech, Denmark
We have made SU-8 gold nanoparticle composites in two ways, ex situ and in situ, and found that in both methods nanoparticles embedded in the polymer retained their plasmonic properties. The in situ method has also been used to fabricate a silver nanocomposite which is electrically conductive. The silver composite was structured using UV lithography, and initial results are very promising with regards to obtained resolution.
7 - Controlling the Radiation Pattern of A Point Acoustic Source via Surface Phononic Crystals No show [Show abstract]
  • Ying Cheng, Nanjing University, China
  • Qi Wei, Nanjing University, China
  • Dajian Wu, Jiangsu University, China
  • Xiaojun Liu, Nanjing University, China
We investigate the radiation pattern of a point acoustic source embedded in surface phononic crystal. Directional enhanced acoustic radiation pattern with a main peak of full width at half maximum of about 3.4° and large radiation enhancement along on-axis direction is achieved.
8 - Optimal Plasmonic Focusing On Semiconductor Disks Under Radially Polarized Terahertz Illumination Poster [Show abstract]
  • Korbinian J. Kaltenecker, French-German Research Institute of Saint-Louis; Freiburg Material Research Center, University of Freiburg, Germany
  • Bernd M. Fischer, French-German Research Institute of Saint-Louis, France
  • Markus Walther, Freiburg Material Research Center, University of Freiburg, Germany
Optimal focusing of surface plasmon polaritons in the centre of a plasmonic silicon lens made of concentric rings and illuminated by radially polarized terahertz pulses is demonstrated. We map the field distribution on the fabricated samples with THz near-field microscopy and compare the results to the simulations.
9 - Electromagnetically Induced Transparency Analogy of Dielectric Metamaterial No show [Show abstract]
  • Fuli Zhang, Northwestern Polytechnical University, China
In this manuscript, we experimentally demonstrate magnetically coupled electromagnetically induced transparency (EIT) analogy effect inside dielectric metamaterial. Barium strontium titanate (BST) and calcium titanate (CaTiO3) are chosen as the bright and dark EIT resonators, respectively, due to their different intrinsic dielectric loss. Under incident magnetic field excitation, dielectric metamaterial exhibits an EIT-type transparency window around 8.9 GHz, which is accompanied by abrupt change of transmission phase.
10 - Giant Field Enhancement and Resonant Wavelength Shift Through a Composite Nanostructure No show [Show abstract]
  • Qiang Wu, Nankai University, China
We report a kind of nanostructure composed of a metallic nanosphere pair and a rectangle nanoaperture, which can dramatically enhance the localized optical near-field up to 2100 times larger than the incident optical field. When the composite nanostructures are periodically arranged, the resonance peak can be varied from 560 nm to 760 nm and the electric field enhancement is about 37 percent larger than that of single composite nanostructure. We attribute these phenomena to double light localization effect and the coupling effect of the composite nanostructures. Both enhancement factors of single and periodic composite nanostructures are sufficient for single molecule detection.
11 - Surface Plasmon Polariton diffraction from isolated nanoparticles Poster [Show abstract]
  • Angela Demetriadou, Department of Chemistry, Imperial College London, United Kingdom
  • Alexei Kornyshev, Department of Chemistry, Imperial College London, United Kingdom
Surface Plasmon Polaritons (SPPs) are widely used for sensing purposes. Recently, it was shown that single, isolated particles can be imaged with SPP-waves. We show that the image is produced due to the diffraction of SPP-waves, and we derive a full-wave analytical model expressing this interaction. On the basis of our theoretical model, we quantify the diffraction of SPP-waves, aiming to characterize the particle from the properties of its observed image.
12 - Controllable Tamm Plasmon Effect Designed by Admittance Loci Withdrawn [Show abstract]
  • Che-Yuan Chang, National Chiao Tung University, Taiwan
  • Kuo-Ping Chen, National Chiao Tung University, Taiwan
Tamm plasmon, is a plasmonic resonance happens at the boundary of photonic crystal and metal. A novel design tool with admittance loci is proposed to demonstrate the relationship between Tamm plasmon structure and the corresponding resonance wavelength. In this work, tunability of Tamm plasmon resonance wavelength and the optimized resonance coupling is presented.
13 - Spectral Efficiency Of Engineered Thermal Cloaks In The Frequency Regime Poster [Show abstract]
  • David Petiteau, Aix-Marseille Université, Centrale Marseille, Institut Fresnel, France
  • Sébastien Guenneau, Aix-Marseille Université, Centrale Marseille, Institut Fresnel, France
  • Michel Bellieud, Laboratoire de Mécanique et Génie Civil de Montpellier, Université Montpellier II, France
  • Myriam Zerrad, Aix-Marseille Université, Centrale Marseille, Institut Fresnel, France
  • Claude Amra, Aix-Marseille Université, Centrale Marseille, Institut Fresnel, France
We analyse basic thermal cloaks designed via different geometric transforms applied to thermal cloaking. We evaluate quantitatively the efficiency of these heterogeneous anisotropic thermal cloaks through the calculation of the standard deviation of the isotherms. The study addresses the frequency regime and we point out the cloak’s spectral efficiencies. We find that all these cloaks have comparable efficiency irrespective of whether or not they have singular conductivity at their inner boundary. We then study multi-layered cloaks designed via the homogenization process and find that a large number of thin layers (at least fifty) is required to reduce substantially the standard deviation of the isotherms.
14 - Dispersion Relations Of A Metal Canoparticle Chain Close To A Metallic Substrate: Hybrid Chain-Substrate Surface Plasmon Polaritons And Negative Index Modes Poster [Show abstract]
  • Paul Jasper Compaijen, Zernike Institute for Advance Materials, Netherlands
We calculated the dispersion relations of a linear chain of silver nanospheres close to a metallic substrate. The excitations of this compound system are hybrid plasmon polaritons. This simple system shows a wide range of physical phenomena: a very steep and a completely flat dispersion band, as well as a negative index band
15 - Enhanced Cross-Section Of Gold Nanoparticles In The Vicinity Of A Silicon Substrate Poster [Show abstract]
  • Kévin Ehrhardt, CRPP - CNRS, France
  • Zhiqiang Zheng, CRPP - CNRS, France
  • Julien Vieaud, CRPP - CNRS, France
  • Olivier Merchiers, CRPP - CNRS, France
  • Yves Borensztein, INSP - CNRS, France
  • Ashod Aradian, CRPP - CNRS, France
  • Virginie Ponsinet, CRPP - CNRS, France
Monolayers of gold nanoparticles deposited on top of a polymer layer (spacer) above a silicon wafer were prepared by electrostatically-controlled layer-by-layer assembly. Their structure was studied by atomic force microscopy and X-ray reflectivity. Spectroscopic ellipsometry was used to extract the individual absorption cross-section of the nanoparticles in the visible spectrum. We show that this cross-section varies with the substrate proximity, in a way which cannot be fully described by the classically described image dipole effect.
16 - Parametric Amplification in Double-EIT Metamaterial: Application to Storage of Electromagnetic Waves Poster [Show abstract]
  • Toshihiro Nakanishi, Kyoto University, Japan
  • Masao Kitano, Kyoto University, Japan
We propose a metamaterial, which realizes electromagnetically induced transparency (EIT) effects for fundamental and second harmonic waves. Two trapped modes for each frequency are coupled through the nonlinearity of a varactor diode. We demonstrate loss compensation in storage process of electromagnetic waves by parametric amplification.
17 - Strong Coupling between Localized Surface Plasmons and Point-like Emitters within the Classical Scheme of the Discrete Dipole Approximation Poster [Show abstract]
  • Stefania D'Agostino, Center for Biomolecular Nanotechnologies - Italian Institute of Technology (CBN-IIT), Italy
  • Filippo Alpeggiani, Dipartimento di Fisica, Università degli Studi di Pavia and CNISM, Via Bassi, 6, 27100 Pavia, Italy, Italy
  • Lucio Claudio Andreani, Dipartimento di Fisica, Università degli Studi di Pavia and CNISM, Via Bassi, 6, 27100 Pavia, Italy, Italy
In the context of plasmonics, the strong coupling regime of interaction between electronic transitions and plasmonic modes has recently become of large interest because its mixed polariton character shows new optical and electronic properties. In this work, the possibility to achieve strong coupling between localized surface plasmons and point-like emitters and to theoretically predict this phenomenon within the classical framework of the Discrete Dipole Approximation (DDA), is reported. DDA allows to calculate the perturbations induced by any kind of metal nanostructure onto the decay dynamics of an oscillating dipole with a good level of accuracy and, if combined with a quantum electrodynamical treatment of radiation-matter interaction, can result in a powerful scheme which can be applied to nanoparticles of any shape and dispersive dielectric function. Here this approach is applied to sharp silver nanotips, demonstrating the advantage offered by these nanostructures with respect to spherically-shaped ones in reducing the threshold for the onset of strong coupling in the electromagnetic interaction of a point-like emitter with localized surface plasmons.
18 - Observation of Spin-Electromagnetic Wave Envelope Solitons in Nonlinear Multiferroic Metamaterials Poster [Show abstract]
  • Alexey Ustinov, St. Petersburg Electrotechnical University, Russia
  • Alexandr Kondrashov, St. Petersburg Electrotechnical University, Russia
  • Andrei Nikitin, St. Petersburg Electrotechnical University, Russia
  • Boris Kalinikos, St. Petersburg Electrotechnical University, Russia
Self-generation of microwave spin-electromagnetic wave envelope solitons has been observed and studied for the first time. We used a feedback active ring oscillator based on artificial multiferroic metamaterial, which served as a nonlinear waveguide. Management of spin-electromagnetic-wave soliton train parameters by both dielectric permittivity and magnetic permeability is demonstrated.
19 - Surface Spaser Spectroscopy Poster [Show abstract]
  • Alexander Dorofeenko, Institute for Theoretical and Applied Electromagnetics RAS, Russia
  • Igor Nechepurenko, All-Russia Research Institute of Automatics, Russia
  • Yurii Lozovik, Institute of Spectroscopy RAS, Russia
  • Alexander Pukhov, Institute for Theoretical and Applied Electromagnetics RAS, Russia
We propose a novel method for high sensitive surface spectroscopy based on a hole burning in the spaser spectrum due to absorption by analyzed molecules or clusters located inside a plasmonic cavity. The system is modelled by means of 1D Maxwell-Bloch equations.
20 - Bottom-Up Self-Assembled Metamaterials: Lithographically Free Approaches for Highly Controlled Organization of Plasmonic Nanoparticles into Optical Metamaterials Poster [Show abstract]
  • Moritz Tebbe, Physical Chemistry II, University of Bayreuth, Germany
  • Christoph Hanske, Physical Chemistry II, University of Bayreuth, Germany
  • Christian Kuttner, Physical Chemistry II, University of Bayreuth, Germany
  • Max Männel, Physical Chemistry II, University of Bayreuth, Germany
  • Patrick Probst, Physical Chemistry II, University of Bayreuth, Germany
  • Nicolas Pazos-Perez, Physical Chemistry II, University of Bayreuth, Germany
  • Munish Chanana, Physical Chemistry II, University of Bayreuth, Germany
  • Andreas Fery, Physical Chemistry II, University of Bayreuth, Germany
In this work we report novel methods to produce large-scale organized structures of spherical and anisotropic plasmonic goldnanoparticles. Our completely lithography-free technique allows us to manufacture metamaterials with different levels of hierarchy. Furthermore structure formation is highly controlled. Starting with synthesis of nanoscale monodisperse building blocks and subsequent self-assembly into parallel lines with varied periodicity in the visible wavelength range and close IR. Assemblies can be prepared on centimeter square to form macroscale materials.
21 - THz structures fabricated in laser direct patterning Poster [Show abstract]
  • Paweł Kozioł, Wroclaw University of Technology, Poland
  • Arkadiusz Antończak, Wroclaw University of Technology, Poland
  • Michał Walczakowski, Military University of Technology, Poland
  • Norbert Pałka, Military University of Technology, Poland
  • Krzysztof Abramski, Wroclaw University of Technology, Poland
In this paper two different methods of the manufacture of metamaterial structures using a laser treatment were presented. One of them is related to direct metallization of the surface of AlN ceramics by interaction of laser radiation. The second method involves a process of selective removal of the conductive layer (silver) in the laser ablation process. It has been proved that both proposed methods allow to produce a structure of SSR type showing its properties in THz range.
22 - Temperature tuning all-dielectric left-handed material No show [Show abstract]
  • bai du, emrl, China
We chose a special ceramic material to design an all-dielectric LHM that could be tuned by temperature. Cubes and rods were used in the structure. In the X-band, the rods could provide a wide negative permittivity band and the cubes produced negative effective permeability. The double-negative frequency range could be tuned from 8.4GHz to 11GHz when temperature changed. The S parameters and the retrieved effective electromagnetic parameters showed a wide frequency tuning range of this all-dielectric LHM.
23 - An efficient plate heater designed by transformation thermodynamics No show [Show abstract]
  • Yungui Ma, Department of Optical Engineering, Zhejiang University, China, China
The transformation thermodynamic applied on thermal conduction equations can map a virtual geometric object into a physical thermal medium to realize the manipulation of heat flux with desired paths, providing unprecedented opportunities to create thermal devices that are unconceivable or deemed impossible before. In this work we employ this technique to design an efficient plate heater that can transiently realize a large uniform temperature surface but under the powering of a small thermal source. As proof of the principle the proposed device is implemented with engineered thermal materials and shows the desired heating behaviors consistent with the numerical simulations. Unique applications for these devices are envisioned where stringent temperature uniformity and compact heat source are equally demanded.
24 - Theoretical Study of Dark Solitons Envelope in Artificial Multiferroics Poster [Show abstract]
  • Mikhail Cherkasskii, Saint Petersburg Electrotechnical University , Russia
  • Andrey Nikitin, Saint Petersburg Electrotechnical University , Russia
We present the results of theoretical investigations of intense nonlinear waves and microwave dark solitons of spin-electromagnetic waves in the artificial multiferroic structures and ferrite films. A behavior of the dark solitons is strongly depended on the nonlinearity and dispersive properties of the spin-electromagnetic waves. The solitonic behavior of spin-electromagnetic waves is analyzed.
25 - Optical Properties of A Strongly Coupled Molecular Dimer-Metal Nanoparticle: Linear and Non-Linear Response Poster [Show abstract]
  • Bintoro Siswo Nugroho, Zernike Institute for Advanced Materials , Netherlands
  • Alexander A. Iskandar , Institut Teknologi Bandung, Indonesia
  • Victor A. Malyshev, Zernike Institute for Advanced Materials , Netherlands
  • Jasper Knoester , Zernike Institute for Advanced Materials , Netherlands
We study theoretically the optical response of a nanohybrid comprising a molecular dimer coupled to a metal nanoparticle. We show that absorption spectrum of the hybrid is strongly affected by the dimer exciton - metal nanoparticle interaction, as well as the polarization of the applied field. The interaction leads to the suppression and the enhancement of the energy absorption, depending on the polarization and the intensity of the applied field.
26 - Metric Transitions In Dispersive Metamaterials Poster [Show abstract]
  • Ernesto Reyes-Gómez, Instituto de Física, Universidad de Antioquia, Colombia
  • Solange Cavalcanti, Instituto de Física, Universidade Federal de Alagoas, Brazil
  • Luiz Oliveira, Instituto de Física, Unicamp, Brazil
  • Carlos de Carvalho, CNPEM, Brazil
We examine metric signature topological transitions in the propagation of electromagnetic waves in dispersive metamaterials. The frequency dependence of the metric tensor leads to topological transitions of the isofrequency surface, to diverging photonic density of states at some frequency ranges, and to large wave vectors modes.
27 - Metabolic Material That Extends the Lifetime of Organic Dyes Poster [Show abstract]
  • Mitsunori Saito, Ryukoku University, Japan
  • Tatsuya Nishimura, Ryukoku University, Japan
PDye molecules diffuse rapidly in a polydimethylsiloxane rubber that is swollen with toluene. This phenomenon is useful to create a durable photopolymer that self-heals its degraded optical function by replacement of damaged and fresh dye molecules. The lifetime extension was demonstrated by repeating photochromic reactions with dye-dispersed PDMS rubbers.ut your abstract here
28 - Optically And Electrically Tunable Dirac Points In Graphene-Based Plasmonic Crystals Poster [Show abstract]
  • Fangwei Ye, Shanghai Jiao Tong Univ, China
We introduce and investigate the concept of graphene-based plasmonic crystals (PCs), which consist of a periodic array of graphene sheets separated by dielectric or metallic spacer layers. We show that the Dirac points of the PC can be tuned by more than 100 nm by electrical or nonlinear optical means and study the influence of this effect on optical beam dynamics.
29 - Generalized Hyperbolic Metamaterials No show [Show abstract]
  • Vladislav Popov, Balarusian State University, Belarus
  • Andrey Novitsky, Belarusian State University, Belarus
We propose the concept of generalized hyperbolic metamaterials (GHMM) which high-wavevector isofrequency surface has more complicated form than a hyperboloid. A layered metal-dielectric structure, which consists of a uniaxial dielectric crystal and isotropic metal, is an example of GHMM. We predict the effective medium parameters of the layered GHMMs.
30 - Scattering of Light and Pulling Optical Forces for Hyperbolic-Metamaterial Spheres Poster [Show abstract]
  • Andrey Novitsky, Belarusian State University, Belarus
  • Sergei Zhukovsky, Technical University of Denmark, Denmark
  • Andrei Lavrinenko, Technical University of Denmark, Denmark
We discuss electromagnetic fields and optical forces acting on microspheres made of extremely anisotropic medium. We propose an energy-based criterion for choosing an appropriate solution of Maxwell's equations inside the sphere when two solutions are singular at the center. We investigate the material parameters of a lossy hyperbolic-metamaterial sphere that can be pulled by a nonparaxial, gradientless Bessel beam.
31 - Quantum Plasmonics In Graphene Nano-flakes: A Time-dependent Density Functional Theory Study Poster [Show abstract]
  • Wei Wu, University College London, United Kingdom
  • Nicolae Panoiu, University College London, United Kingdom
The optical spectra for a variety of single and coupled graphene nano-flakes have been studied using time-dependent density functional theory within generalized gradient approximation. The time evolution of the charge density induced by a continuous-wave electrical field excitation has been calculated as well, in order to investigate the plasmonic properties of these graphene nano-structures. For the small graphene nano-flakes (diameter ∼1 nm), the edge plasmons are dominant, whereas for larger ones (diameter ∼2 nm) the edge plasmons are accompanied by multipolar collective charge oscillations, a typical characteristics for surface plasmons. This study might be used to guide the experimental observation of quantum plasmons in graphene nano-structures.
32 - Full-Parameter dc Ghost Illusion Device Poster [Show abstract]
  • Wei Xiang Jiang, Southeast Univeristy, China
  • Chen Yang Luo, Southeast Univeristy, China
  • Shuo Ge, Southeast Univeristy, China
  • Hui Feng Ma, Southeast Univeristy, China
  • Tie Jun Cui, Southeast Univeristy, China
Optical or electromagnetic illusions, which can transform the signal of an actual object to that of a predesigned virtual object, are of great interests in physics. By using the transformation optics in electrostatics and dc metamaterials, we propose the creation of ghost illusions in static electric fields. With a dc illusion device, the signal of the original object is ghosted and perceived as multiple ghost objects with different geometries. Based on the anisotropic and inhomogeneous dc metamaterials realized by the resister network, we design, fabricate, and test a ghost illusion device in steady field. The equipotential lines outside the illusion cloak are exactly the same as those of the ghosted objects. The experiment result is in good agreement with the simulation.
33 - Microstructured Surfaces For Enhanced Transmission Poster [Show abstract]
  • Aliaksandra Ivinskaya, Danish Technical University, Denmark
  • Rene Bergmann, Danish Technical University, Denmark
  • Jan Kafka, Danish Technical University, Denmark
  • Fridolin Okkels, Danish Technical University, Denmark
  • Mogens Jakobsen, Danish Technical University, Denmark
Binary microstructures are used to increase transmission of silicon (Si) surfaces in the infrared (IR) range. We consider hexagonal and square lattices with square and round pillars with the finite-difference frequency-domain (FDFD) method. In agreement with theory and previous publications, the height needed to improve transmission for all geometries is given by λ/4√nSi where nSi is the refractive index of Si. Optimal size of microstructures is found through rigorous simulations. Different effective medium theories (EMTs) are compared whether they can predict this optimal size. Zero-order EMT appears to be one of the best choices, another good choice is volume averaging of refractive index. Manufacture-related issues are also discussed: for example, choice of bigger period is preferential as it gives better stability of the transmission curve if variations of pillar diameter and height occur from batch to batch during fabrication.
34 - Theoretical And Experimental Study Of Guided Modes Of The Wire Medium Slab Poster [Show abstract]
  • ALEKSANDR AGEISKII, Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Russia
  • Yuriy Tyshetskiy, School of Physics, The University of Sydney, Australia
  • Ivan Iorsh, Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Russia
  • Alexey Orlov, Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Russia
  • Rostislav Dubrovka, Queen Mary, University of London, United Kingdom
  • Sergei Vladimirov, School of Physics, The University of Sydney, Australia
  • Pavel Belov, Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Russia
  • Yuri Kivshar, The Australian National University, Australia
We study the guided modes in the wire medium slab taking into account both the nonlocality and losses in the structure.
35 - Practical transformation media for mode-matched interaction of light with single quantum emitters Poster [Show abstract]
  • Ioannis Chremmos, Max Planck Institut für die Physik des Lichts, Germany
  • Euthymios Kallos, Department of Materials Science, University of Patras, GR-26504 Patras, Greece, Greece
The efficient interaction of light with single quantum emitters depends critically on the modal overlap between the incident and scattered photons. This usually calls for high-NA optics in order to match the dipole radiation pattern of the emitter in free space. Such a requirement can be alleviated if the emitter is embedded in a medium that shapes its radiation into a collimated output beam. We here present simple-to-realize, all-dielectric and isotropic transformation media that perform such a mode conversion.
36 - Experimental Demonstration of the Saturation of Nanoscaled SRR and CSRR Poster [Show abstract]
  • J. D. Ortiz, National University of Colombia, Colombia
  • J. D. Baena, National University of Colombia, Colombia
  • V. Delgado, University of Seville, Spain
  • R. Marqués, University of Seville, Spain
  • A. Enemuo, The City College of New York, USA
  • J. Gollub, Phoebus Optoelectronics, USA
  • R. Akhmechet, Phoebus Optoelectronics, USA
  • B. Penkov, Phoebus Optoelectronics, USA
  • C. Sarantos, Phoebus Optoelectronics, USA
  • D. T. Crouse, The City College of New York, USA
A few years ago, in 2005, it was reported that the Split Ring Resonator suffers a saturation and weakening of its resonance response as its size is scaled down. In this paper we provide the first experimental demonstration of this phenomenon. Besides, we demonstrated a similar phenomenon for the Complementary Split Ring Resonator.
37 - Modeling and Predicting Surface Roughness via Transformation Optics Poster [Show abstract]
  • Ozlem Ozgun, TED University, Turkey
  • Mustafa Kuzuoglu, Middle East Technical University, Turkey
Monte Carlo analysis of surface roughness in electromagnetic scattering problems is presented by using the principles of transformation electromagnetics/optics in finite methods. The main motivation in the proposed approach is to eliminate the need of mesh generation for each surface in repeated Monte Carlo realizations, and hence, to devise a faster model in predicting surface roughness. A single, simple and uniform mesh is employed assuming a smooth surface and ignoring the actual surface, and thereafter, a transformation medium is designed on the smooth surface to make this problem equivalent to the original problem with actual surface. The material parameters of the transformation medium are determined by transforming the smooth surface to the actual surface through a specially-defined coordinate transformation. The technique is demonstrated via various finite element simulations.
38 - Tunneling and Multi-Passband Transmission Through Ultra-Narrow Photonic Crystal Channels No show [Show abstract]
  • Yanhong Liu, Shanixi Datong University, China
The anomalous tunneling effect, multi-passband transmission and field confinement are studied in the narrow channels with very subwavelength transverse cross section. The numerical simulations reveal that the tunneling effect of the electromagnetic wave, along with pronounced the local field can be drastically enhanced in the ultra-narrow channel.
39 - Topology optimization of an electromagnetic cloak using a ferrite material Poster [Show abstract]
  • Masaki Otomori, AISIN AW CO., LTD., Japan
  • Takayuki Yamada, Kyoto University, Japan
  • Jacob Andkjær, Ibsen Photonics A/S, Denmark
  • Kazuhiro Izui, Kyoto University, Japan
  • Shinji Nishiwaki, Kyoto University, Japan
  • Nozomu Kogiso, Osaka Prefecture University, Japan
This paper numerically demonstrates that a systematic design approach based on topology optimization can be applied to find the layout of a ferrite material that functions as an electromagnetic cloak with a relatively small cloaking region. The numerical result indicates that the frequency-dependent aspect of a ferrite material’s permeability may enable cloak designs with novel functions, such as on-off operation in response to on-off application of an external magnetic field.
40 - Mathematical analysis and numerical simulation of carpet cloaks Poster [Show abstract]
  • aihua wood, AFIT, USA
  • Jinchun Li, UNLV, USA
Here presented is the mathematical analysis and numerical simulation of the popular carpet cloak model. The well-posedness of the model is established. A time domain finite element method is developed for the numerical solution. Simulations are carried out and shown good convergence and accuracy.
41 - Radiative And Non-Radiative Channels Of Molecule Fluorescence Near Hyperbolic Metamaterials No show [Show abstract]
  • Vasily Klimov, Lebedev Physical Institute, Russia
Radiation of an electric or magnetic dipole placed near arbitrary absorbing planar metamaterials (including hyperbolic ones) is considered. Fundamental constraints on emitted to infinity power are found. We have shown that neither dielectric lamellar structures nor hyperbolic metamaterials are able to provide any significant enhancement of the radiation performance in comparison with a thin single metal film or metal-dielectric pair. It is shown that by making use nanoantennas one can overcome these limitations.
42 - Nanoscale Terahertz Graphene-Coated Deeply Subwavelength Fiber Waveguides Poster [Show abstract]
  • Arthur Davoyan, University of Pennsylvania, USA
  • Nader Engheta, University of Pennsylvania, USA
We study nanoscale graphene-coated fiber waveguides and theoretically show that terahertz radiation can, under certain conditions, be guided by fibers with highly subwavelength radius. We also discuss that in contrast to regular dielectric fiber waveguides the effective mode cross-section can be squeezed well beyond the diffraction limit, making the proposed waveguide a promising candidate for highly integrated photonic circuits and high-resolution terahertz imaging
43 - Property of Magnonic Crystal on Injection of Alternative Spin Current Poster [Show abstract]
  • Chiharu Mitsumata, National Institute for Materials Science, Japan
We numerically investigated properties of magnonic crystal consisting of arrayed spintronics devices. The bandwidth of microwave absorption decreases as injected spin currents increase. On the direct spin current, the bandwidth linearly decreases. Meanwhile, the alternative spin current induces a non-linear change of bandwidth, leading to a dynamic effect of the spin current.
44 - Spontaneous radiation of a two-level atom into multipole modes of a plasmonic nanoparticle Poster [Show abstract]
  • Evgeny Andrianov, All-Russia Research Institute of Automatics, Moscow Institute of Physics and Technology , Russia
  • Alexander Pukhov, All-Russia Research Institute of Automatics, Moscow Institute of Physics and Technology, Institute for Theoretical and Applied Electromagnetics, Russia
  • Alexey Vinogradov, All-Russia Research Institute of Automatics, Moscow Institute of Physics and Technology, Institute for Theoretical and Applied Electromagnetics, Russia
  • Alexander Dorofeenko, All-Russia Research Institute of Automatics, Moscow Institute of Physics and Technology, Institute for Theoretical and Applied Electromagnetics, Russia
  • Alexander Lisyannsky, Queens College of the City University of New York, USA
We consider the dynamics of the excited two-level system (TLS) in the vicinity of spherical plasmonic nanoparticle (NP) in the case when transition frequency of TLS coincides with the condensation point of NP plasmonic resonances. It is shown that the dynamics of the TLS has two stages. During the initial one TLS exponentially decays and tends to some quasi-stationary state. At the second stage chaotic or regular Rabi oscillations of the probability of the TLS being in the excited state take place. We also show that there is non-trivial dependence of amplitude of multipole plasmonic modes excitation on the distance between TLS and NP. In spite of the fact that interaction with high-multipole modes is dominant when distance decreases there is some distances when the main part of TLS-energy goes into low-multipole modes (quadrupole, dipole).
45 - Novel eutectic nanoparticle-based composite – plasmonic properties and applications Poster [Show abstract]
  • Katarzyna Sadecka, Institute of Electronic Materials Technology, Poland
  • Marcin Gajc, Institute of Electronic Materials Technology, Poland
  • Hancza Barbara Surma, Institute of Electronic Materials Technology, Poland
  • Kamil Sobczak, Institute of Physics, Polish Academy of Sciences, Poland
  • Piotr Dluzewski, Institute of Physics, Polish Academy of Sciences, Poland
  • Johann Toudert, Laser Processing Group, Instituto de Óptica, CSIC, Spain
  • Dorota Pawlak, Institute of Electronic Materials Technology, Poland
Self-organized three-dimensional nanoplasmonic Bi2O3-Ag eutectic composite was obtained by the micro-pulling down method. This material exhibits localized surface plasmon resonance (LSPR) at 595 nm. To our knowledge this is the first demonstration of eutectic-based nanoplasmonic material.
46 - 3D Imaging With Metamaterials Poster [Show abstract]
  • Arnold Kalvach, Budapest University of Technology and Economics, Hungary
  • Zsolt Szabó, Budapest University of Technology and Economics, Hungary
A new kind of 3D display is proposed using near zero index (NZI) metamaterial in front of a 2D display. The virtual distance of a pixel depends on the refractive index. Since the refractive index of NZI metamaterials changes rapidly between 0 and 1 in respect of the frequency, a great change in virtual distance can be achieved with minor frequency shift. We present a numerical method to calculate virtual distance for metamaterials with retrieved effective parameters.
47 - Metamaterials For Ultra-Broadband Super Absorbers Based On Plasmon Hybridization Poster [Show abstract]
  • Michael Lobet, University of Namur, Belgium
  • Luc Henrard, University of Namur, Belgium
We propose metamaterial super absorbers that efficiently absorb incoming radiation over an operational bandwidth ranging from 0.20-5.99 µm with an integrated absorption as high as 97.1%. A periodic array of pyramidal metal-dielectric (Au/Si) layers acts as broadband coupled plasmonic resonators. Plasmon hybridization of dipolar modes is shown to be the prominent mechanism in broadband absorption.
48 - Bi-isotropic Photonic Crystals With Spectral Asymmetry Poster [Show abstract]
  • Filipa Prudêncio, Instituto Superior Técnico-Instituto de Telecomunicações, Portugal
  • Sérgio Matos, Instituto Universitário de Lisboa-Instituto de Telecomunicaçoes, Portugal
  • Carlos Paiva, Instituto Superior Técnico-Instituto de Telecomunicações, Portugal
Periodic layered structures with bi-isotropic media are studied with the aim to unveil nonreciprocal effects in the photonic band structures. It is shown that photonic crystals with both chiral and Tellegen materials can exhibit asymmetric band diagrams. A symmetry transformation that protects the spectral-symmetry of Tellegen photonic crystals is identified.
49 - Field Singularities and Super-Localized Plasmons at Sharp Metal Corners and Tips Poster [Show abstract]
  • Maxim Gorkunov, Shubnikov Institute of Crystallography, Russian Academy of Sciences, Moscow, Russia
  • Boris Sturman, Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, Russia
  • Evgeniy Podivilov, Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, Russia
Electromagnetic field behavior near ideally sharp and controllably smoothed metal corners and tips is explored theoretically. We reveal the critical regions of the relative metal permittivity and the apex angle, where, independently of the smoothing radius, the light energy is strongly localized near the apex and the optical phase varies rapidly. Strong quantitative links are established between such field singularities and the super-localized plasmon resonances in nano-scale metal particles, wires and surface perturbations possessing sharp shape features.
50 - Nonlinear Magneto Optical Response Of Chiral Meta-Materials No show [Show abstract]
  • concita sibilia, Università di Roma La Sapienza, Italy
  • Fabio Antonio Bovino, Quantum technology Lab Selex ES-, Italy
  • Alessio Benedetti, Università di Roma La Sapienza, Italy
  • Grigore Lehau, Università di Roma La Sapienza, Italy
  • Csilla Gergely, Univ.Montpellier 2, France
The noncollinear second harmonic generation from an oriented multilayer film of the bacteriorhodopsin chromo protein is presented. The dependence from an applied static magnetic field is also observed and discussed
51 - Focusing Millimetre Waves by Means of a Permittivity-Near Zero Narrow-Waveguide Lens Poster [Show abstract]
  • V. Pacheco-Peña, Universidad Pública de Navarra, Spain
  • V. Torres, Universidad Pública de Navarra, Spain
  • B. Orazbayev, Universidad Pública de Navarra, Spain
  • M. Beruete, Universidad Pública de Navarra, Spain
  • M. Navarro-Cía, Imperial College London, UK
  • N. Engheta, University of Pennsylvania, USA
An epsilon-near zero (ENZ) plano-concave lens is designed, numerically studied and experimentally demonstrated at millimeter-waves. The metallic lens is synthesized by an array of stacked narrow hollow rectangular waveguides working near cutoff emulating an ENZ medium. At the working frequency (fo = 144 GHz) the focusing properties of the lens demonstrate an experimental enhancement of transmission of 15.9 dB with a good impedance matching with free space.
52 - Electric Field Distribution Perpendicular to the Surface of Mid-infrared Antennas Poster [Show abstract]
  • Kenichi Kasahara, Ritsumeikan University, Japan
  • Yuhki Nishimura, Ritsumeikan University, Japan
  • Suguru Mori, Ritsumeikan University, Japan
  • Takahiro Kawano, Ritsumeikan university, Japan
  • Yuhta Kunichika, Ritsumeikan University, Japan
  • Toyonari Yaji, Ritsumeikan University, Japan
  • Naoki Ikeda, National Institute for Materials Science (NIMS), Japan
  • Hirotaka Oosato, National Institute for Materials Science (NIMS), Japan
  • Yoshimasa Sugimoto, National Institute for Materials Science (NIMS), Japan
The electric field in the normal direction was experimentally investigated by using mid-infrared antennas formed on a thin Al2O3 layer/Si substrate with the atomic layer deposition. The electric field decreased rapidly until a 6 nm depth, and that the degree of attenuation became relaxed in the deeper region.
53 - Induced Transparency in Graphene SRR Metamaterials Poster [Show abstract]
  • Sang Soon Oh, Imperial College London, United Kingdom
  • Joachim Hamm, Imperial College London, United Kingdom
  • Andreas Pusch, Imperial College London, United Kingdom
  • Ortwin Hess, Imperial College London, United Kingdom
We demonstrate a field-induced transmission change in graphene split ring resonator (SRR) metamaterials at terahertz frequencies. For graphene SRR metamaterials, incident terahertz radiation reduces the carrier mobility and enhances the SRR LC resonance due to a resulting conductivity decrease in the graphene films. To investigate this, we employ the finite-difference time-domain method with an analytical model for the optical conductivity of graphene.
54 - Plasmon-Phonon Coupling in Graphene Nanostructures Fabricated by Nanosphere Lithography Poster [Show abstract]
  • Xiaolong Zhu, DTU, Denmark
  • Weihua Wang, DTU, Denmark
  • Wei Yan, DTU, Denmark
  • Martin B. Larsen, DTU, Denmark
  • Peter Bøggild, DTU, Denmark
  • Thomas Garm Pedersen, Aalborg University, Denmark
  • Sanshui Xiao, DTU, Denmark
  • Jian Zi, Fudan, China
  • N. Asger Mortensen, DTU, Denmark
The interaction between graphene plasmons and substrate phonons is experimentally demonstrated, where the structural control is used to map out the energy dispersions of the hybridized modes. The results shown in the experiments are well explained by both the theoretical calculations and numerical simulations. Our study has enabled large-area fabrication of graphene nanostructures and the experimental investigations of graphene plasmon-phonon coupling are especially important for graphene-based electro-optical devices.
55 - Rigorous Time-Domain Graphene Representation as a Surface Boundary Condition Poster [Show abstract]
  • Stamatios Amanatiadis, Aristotle University of Thessaloniki, Greece
  • Nikolaos Kantartzis, Aristotle University of Thessaloniki, Greece
The present work introduces the explicit modelling of graphene in the time domain, defined by its surface conductivity, as a surface boundary condition via an efficient 2D transverse electric FDTD formulation, derived directly from Maxwell's equations. The analysis is conducted at the far-infrared regime and the proposed method is validated by comparing its results with the theoretical propagation properties of the surface waves, supported onto graphene.
56 - Optical Absorbance of Randomly Oriented Silver Nanowires Films by means of Photoacoustic Spectroscopy No show [Show abstract]
  • concita sibilia, Università di Roma La Sapienza, Italy
  • roberto li voti, Università di Roma La Sapienza, Italy
  • Grigore Lehau, Università di Roma La Sapienza, Italy
  • Maria Cristina Larciprete, Università di Roma La Sapienza, Italy
  • Mario Bertolotti, Università di Roma La Sapeinza, Italy
<p> We present the photoacoustic characterization in the UV/VIS range of randomly oriented silver nanowires films deposited onto either quartz or polymeric substrate. This study was performed over a set of films differing in both metallic nanowires’ dimensions, as well as metal content. Following the morphological characterization, we employed both spectrophotometry and photoacoustic spectroscopy technique (PAS) to investigate in details the absorbance spectra of silver nanowires films, in order to evidence their peculiar properties in the UV/VIS rangePut your abstract here</p>
57 - From Modeling to Fabrication of Double Side Microstructured Silicon Windows for Infrared Gas Sensing in Harsh Environments Poster [Show abstract]
  • René Bergmann, Technical University of Denmark, Department of Micro- and Nanotechnology, Denmark
  • Aliaksandra Ivinskaya, Technical University of Denmark, Department of Micro- and Nanotechnology, Denmark
  • Jan Kafka, Technical University of Denmark, Department of Micro- and Nanotechnology, Denmark
  • Fridolin Okkels, Technical University of Denmark, Department of Micro- and Nanotechnology, Denmark
  • Mogens Havsteen Jakobsen, Technical University of Denmark, Department of Micro- and Nanotechnology, Denmark
Utilizing anti-reflective sub-wavelength double side surface microstructures, high temperature resistant 1″ silicon windows were manufactured by a simple “3-step” fabrication process. The windows show 100% peak transmittance for a defined main wavelength (5 µm) and more than 90 % average transmittance for the wavelength range of 5-7 µm.
58 - Cylindrical Acoustic Luneburg Lens Poster [Show abstract]
  • Sang-Hoon Kim, Mokpo National Maritime University, Korea (South)
We developed a two-dimensional acoustic Luneburg lens by changing the density of the medium inside the lens. The lens has a cylindrical shape and composes of about seven hundred aluminum columns with various radii of less than 2cm. It has 15 layers and the diameter of the lens is $60cm$. The lens focuses the incoming acoustic waves on the edge of the opposite side of the lens as well in the frequency range of 1,500Hz~2,500Hz. It increases the acoustic pressure of the incoming wave by 3~5 times.
59 - Phase Modulation by External Magnetic Field in Plasmonic Crystals Poster [Show abstract]
  • Andrey Kalish, Lomonosov Moscow State University, Russia
  • Vladimir Belotelov, Lomonosov Moscow State University, Russia
  • Anatoly Zvezdin, Prokhorov General Physics Insitute of Russian Academy of Sciences, Russia
The magneto-optical phase effects of a hybrid metal-dielectric structure are studied theoretically. An applied magnetic field alters the phase of transmitted and reflected waves. The effect demonstrates resonant behavior at the excitation of plasmonic eigenmodes in the transverse configuration. The conditions for the resonant enhancement of the effect are found.
60 - Polymer Coated Nanogold for Tracing Mobility of Engineered Nanoparticles (ENPs) in Subsurface Water Poster [Show abstract]
  • Basil Uthuppu, DTU Nanotech, Denmark
  • Annika Fjordbøge, DTU Environment, Denmark
  • Søren Fischer, DTU Nanotech, Denmark
  • Mette Broholm, DTU Environment, Denmark
  • Mogens Jakobsen, DTU Nanotech, Denmark
Gold nanoparticles show extreme mobility (in sand columns)and stability (in groundwater)when coated with a polymer PVP-VA. Simple UV-Vis spectrometry is used to detect them in ppm level. They are proposed to be tracer particles for other engineered nanoparticles in subsurface.
61 - Broadband sound shielding of Lamb waves through a periodic array of junctions Poster [Show abstract]
  • Rayisa Moiseyenko, IEMN, University of Lille, France
  • Yan Pennec, IEMN, University of Lille, France
  • Rémi Marchal, INSP, University of Paris 6, France
  • Bernard Bonello, INSP, University of Paris 6, France
  • Bahram Djafari Rouhani, IEMN, University of Lille, France
We study theoretically sub-wavelength physical phenomena such as resonant transmission and broadband sound shielding for Lamb waves propagating in an acoustic metamaterial made of a thin plate drilled with one or two row(s) of rectangular holes. One of the main results is the demonstration of a broadband low frequency acoustic shielding with high attenuation.
62 - Bismuth Ferrite for Active Control of Surface Plasmon Polariton Modes Poster [Show abstract]
  • Viktoriia Babicheva, DTU Fotonik, Technical University of Denmark, Denmark
  • Sergei Zhukovsky, DTU Fotonik, Technical University of Denmark, Denmark
  • Andrei Lavrinenko, DTU Fotonik, Technical University of Denmark, Denmark
We propose and investigate several layouts of metal-insulator-metal waveguide with active core which can be utilized for dynamic switching in photonic integrated circuits. The active material, bismuth ferrite (BiFeO3), is sandwiched between metal plates and changes its refractive index through partial switching of ferroelectric domain orientation under applied voltage. Both phase and amplitude modulations are envisaged.
63 - Electron impact investigation of hybridization scheme in coupled split-ring resonators Poster [Show abstract]
  • Qiuqun Liang, Max Planck Institute for Intelligent Systems, Germany
We present a numerical electron impact investigation of the hybridization scheme in coupled split-ring resonators (SRRs) within the context of the electron energy-loss spectroscopy (EELS). We observe that the fundamental, second and third order plasmonic modes of the isolated SRR are split into anti-symmetric and symmetric modes in coupled SRRs.
64 - Narrow Bandwidth Resonances in Periodic Plasmonic Structures Poster [Show abstract]
  • Egor Khaidarov, IAP, ACP, Friedrich Schiller University Jena , Germany
  • Arkadi Chipouline, IAP, ACP, Friedrich Schiller University Jena , Germany
  • Andrei Kabashin, Aix Marseille University, France
  • Irina Nazarenko, Albert-Ludwigs University Freiburg, Germany
Narrow bandwidth resonances (NBR) in the region of Wood anomaly in symmetric and asymmetric refractive index environment for different system configurations are studied. Coupled plasmonic nanonanoresonators system and its optical response is considered numerically and using simple analytical model. Crucial role of the substrate influence on the NBR for various configurations is thoroughly investigated. Possible prospective designs for particular experimental realization are suggested and discussed.
65 - Propagation Process of THz Wave in SRR Metamaterials No show [Show abstract]
  • Qiang Wu, Nankai University, China
We studied the time-resolved imaging of pulsed THz wave propagating in the double-split-ring resonator (SRR) metamaterials, which have been fabricated on LiNbO3 substrate using ion-beam sputtering coating. We designed the appropriate size of metamaterials for terahertz frequencies and distinct swerving wave-front behavior of a THz pulse has been observed when it interacts with SRR metamaterials by phase contrast imaging method.
66 - Cloaking By Shells With Radially Inhomogeneous Permittivity Poster [Show abstract]
  • Igor Pinkevych, Taras Shevchenko National University of Kyiv, Ukraine
  • Victor Reshetnyak, Taras Shevchenko National University of Kyiv, Ukraine
  • Dean Evans, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, USA
Electric response of structures covered by anisotropic spherical and cylindrical shells under the quasi-static uniform field is studied. The permittivity of shells is radially inhomogeneous as r^m. Such shells can be used as invisibility cloak if radial and tangential components of the shell permittivity satisfy a certain relation between them. We have analyzed the efficiency of cloaking and have shown that shells with inhomogeneous permittivity provide more perfect cloaking.
67 - The Potential Energy Of Non-Resonant Reciprocal Optimal Bianisotropic Particles Does Not Depend On Time Poster [Show abstract]
  • Igor Semchenko, Francisk Skorina Gomel State University, Belarus
  • Sergei Khakhomov, Francisk Skorina Gomel State University, Belarus
  • Alexey Balmakou, Francisk Skorina Gomel State University, Belarus
  • Sergei Tretyakov, Aalto University, Finland
In this work, we consider potential energy of recently conceptualized optimal (balanced) bianisotropic particles in electromagnetic fields. The case of non-resonant lossless particles is studied. Knowing the potential energy of optimal bianisotropic particles in the fields of the respective excitations, we find the acting force on the particle in inhomogeneous external fields. It is found that for optimal particles with the balanced values of the polarizabilities the potential energy and acting force are time independent
68 - Superconducting Metamaterial For Sub-millimeter Wave Imaging: First Light Poster [Show abstract]
  • Nikolay Abramov, NUST "MISiS", Russia
We present results of first experiments with elementary cells intended for detection of sub-millimeter waves. The cells realize frequency-division multiplexing readout of antenna coupled superconducting hot electron bolometers by means of integrated GHz-frequency resonators. Such cells can be coupled to a single transmission lime for readout and arranged in form of hexagonal clusters forming 2D imaging metasurface.
69 - Strong Optical Angular Momentum Dependence of Scattering of Laguerre-Gaussian Beams from Silicon Nano-sphere Clusters Poster [Show abstract]
  • Ahmed Al-Jarro, University College London, United Kingdom
  • Claudiu Biris, University College London, United Kingdom
  • Nicolae Panoiu, University College London, United Kingdom
Simulation of silicon nano-sphere clusters excited by Laguerre-Gaussian (LG) beams is considered. It is demonstrated that the scattering process is strongly dependent on the orbital and spin angular momentum carried by the LG beams, an effect explained by the selective suppression or resonant excitation of Mie resonances of the spheres. We show that our results are valid both in the case of a single sphere and clusters made of such spheres, suggesting that the conclusions of our study could be applied to a broad array of applications relying on selective light interaction with ensembles of nanoparticles.
70 - Lasing in chiral metamaterials Poster [Show abstract]
  • David Topf, Blackett Laboratory, Imperial College London, United Kingdom
  • Martin McCall, Blackett Laboratory, Imperial College London, United Kingdom
  • Paul Kinsler, Blackett Laboratory, Imperial College London, United Kingdom
Chiral lasers have potential uses in the medical industry, laser displays and anywhere small, widely tunable lasers are needed. Our comprehensive theory of chiral lasers covers metamaterial and photonic implementations, and makes crucial new predictions suggesting uses for chiral lasers that give them a significant advantage over existing non-chiral structures.
71 - Optimization of Cloaking in All Dielectric Multi-Layer Structures Poster [Show abstract]
  • Ali Mirzaei, Australian National University, Australia
  • Ilya Shadrivov, Australian National University, Australia
  • Andrey Miroshnichenko, Australian National University, Australia
  • Yuri Kivshar, Australian National University, Australia
We employ genetic algorithm and design multi-layer core-shell nanoparticles with optimally reduced scattering cross-section. We cover a cylindrical scatterer with two types of dielectric layers, and reveal that our approach allows the 30 fold scattering reduction.
72 - Manipulation of Electromagnetic Wave Transmission Based on Anisotropic μ-near-zero Metamaterials Embedded with Defects No show [Show abstract]
  • Kuang Zhang, Harbin Institute of Technology, China
  • Qun Wu, Harbin Institute of Technology, China
  • Fanyi Meng, Harbin Institute of Technology, China
  • Jiahui Fu, Harbin Institute of Technology, China
  • Guohui Yang, Harbin Institute of Technology, China
The transmission of electromagnetic (EM) wave in the anisotropic μ-near-zero (AMNZ) metamaterials (MTMs) embedded with defects is investigated. The model of the AMNZ MTMs of the multilayered structure is put forward to obtain the manipulation of the transmission of the EM wave. Both the analytical and the numerical results show that either total transmission or total reflection can be achieved, in spite of the anisotropy and the impedance mismatching with the free space.
73 - Superconducting 2-D metamaterials: Analogy to stacked tunnel Josephson junctions Poster [Show abstract]
  • Stanislav Eismont, Laboratory of superconducting metamaterials, Russia
We present concept and results of numerical development of active superconducting metamaterials, which can generate and amplify the high-frequency signals. Methods of reducing the size of the cell including the advanced design of shunt resistors are described and discussed along with detailed electromagnetic modeling and analysis of experimental results.
74 - Dielectric photonic crystals with superconducting defects Withdrawn [Show abstract]
  • Igor Lyubchanskii, Donetsk Physical&Technical Institute of the National Academy of Sciences of Ukraine, Ukraine
  • Nataliya Dadoenkova, Donetsk Physical&Technical Institute of the National Academy of Sciences of Ukraine, Ukraine
  • YoungPak Lee, Hanyang University, Department of Physics, and q-psi, Seoul 133-791, Republic of Korea
  • Theo Rasing, Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ, Nijmegen, the Netherlands
One-dimensional dielectric photonic crystals with two complex defect layers, consisting of ultrathin superconducting and dielectric sublayers, are theoretically studied. The influence of the positions and structure of the defects (right or left position of the superconducting sublayer with respect to the dielectric sublayer) inside the photonic crystal on the photonic band gap spectra was theoretically investigated at normal incidence of light.
75 - Tunable Frequency Selective Surface based on superconductive split ring resonator Poster [Show abstract]
  • Alexander Averkin, National University of Science and Technology (MISIS), Russia
  • Andrey Shishkin, Moscow State Pedagogical University, Russia
  • Vladimir Chichkov, National University of Science and Technology (MISIS), Russia
  • Boris Voronov, Moscow State Pedagogical University, Russia
  • Gregory Goltsman, Moscow State Pedagogical University, Russia
  • Alexandre Karpov, National University of Science and Technology (MISIS), Russia
  • Alexey Ustinov, National University of Science and Technology (MISIS), RQC, KIT, Russia, Russia, Germany
<p> We study a possibility to use the 2D superconductive metamaterial as a tunable Frequency Selective Surface (FSS). The proposed FSS is made of sub-wavelength size (l/14λ) metamaterial unit cells, where a split-ring resonator is embedded in a small iris aperture in a metal plane. The split-ring resonator is made of NbN film, and its resonance frequency is tuned by external magnetic field, changing the kinetic inductance of NbN film. The Ansoft HFSS simulation predicts the FSS tuning range of about 10-20 %. The developed superconductive FSS may be used as a tunable band-pass filter or modulator.</p>
76 - Sign Reversal of the Nonreciprocity of Microwave Propagation in a “Ferrite + Varactor-Loaded Dipole” Metastructure without Reversal of the Magnetization Direction Poster [Show abstract]
  • Galina Kraftmakher, Kotelnikov V.A. Institute of Radioengineering & Electronics RAS, Russia
  • Valery Butylkin, Kotelnikov V.A. Institute of Radioengineering & Electronics RAS, Russia
  • Yuri Kazantsev, Kotelnikov V.A. Institute of Radioengineering & Electronics RAS, Russia
A method for reversing the sign of the nonreciprocity of microwave propagation without reversal of the magnetization direction is proposed and implemented on a “ferrite plate + varactor-loaded split Butterfly dipole” metastructure placed along waveguide axis. The sign of the nonreciprocity is changed when the resonance frequency of a dipole passes through the ferromagnetic resonance frequency due to the application of a bias voltage to a varactor. The metastructures can be useful for fast channel switching in microwave communication systems.
77 - A Possible Way to Realize Broadband One-Way Waveguide Poster [Show abstract]
  • Rui-xin Wu, Nanjing University, China
  • Zhen Li, Nanjing University, China
  • Yin Poo, Nanjing Univerity, China
To broaden the bandwidth of one-way waveguide, we study possible ways to increase the bandwidth of one-way edge states of magnetic photonic crystal. We find broadband one-way waveguide can be realized by merging the frequency range of topological edge states and magnetic surface plasmon (MSP) resonance caused one-way edge states. The merged frequency range could be up to 3.2 GHz in microwave regime, much larger than that of based on the topological or MSP one-way edge states only.
78 - Microfluidic Synthesis of Soft Acoustic Metamaterials No show [Show abstract]
  • Simon Raffy, Univ. of Bordeaux - Laboratory of the Future - Solvay - CNRS and Centre de Recherche Paul Pascal - CNRS, France
  • Thomas Brunet, Univ. of Bordeaux - Institute of Mechanical Engineering - CNRS, France
  • Benoit Mascaro, Univ. of Bordeaux - Institute of Mechanical Engineering - CNRS, France
  • Jacques Leng, Univ. of Bordeaux - Laboratory of the Future - Solvay - CNRS , France
  • Aurore Merlin, Univ. of Bordeaux - Centre de Recherche Paul Pascal - CNRS, France
  • Christophe Aristégui, Univ. of Bordeaux - Institute of Mechanical Engineering - CNRS, France
  • Olivier Poncelet, Univ. of Bordeaux - Institute of Mechanical Engineering - CNRS, France
  • Olivier Mondain-Monval, Univ. of Bordeaux - Centre de Recherche Paul Pascal - CNRS, France
We use the locally resonant approach to build new soft acoustic metamaterials. Our approach exploits the idea to suspend small resonators (with sizes much lower than the acoustic wavelength) in a matrix with which they exhibit a very large sound speed contrast. Our particles are porous objects that we synthesize using microfluidics coupled to sol gel chemistry.
79 - Liquid Crystal Control Of Nanoparticles-Mediated Surface Plasmon Resonance Sensor Poster [Show abstract]
  • Victor Reshetnyak, Taras Shevchenko National University of Kyiv, Ukraine
  • Igor Pinkevych, Taras Shevchenko National University of Kyiv, Ukraine
  • Victor Zadorozhnii, Taras Shevchenko National University of Kyiv, Ukraine
  • Dean Evans, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, USA
We consider a nanorod-mediated surface plasmon resonance sensor comprising a liquid crystal (LC) layer and investigate the influence of its different structural parameters on the sensitivity enhancement. It is shown that by controlling the orientational state of liquid crystal layer one can manipulate features of a surface plasmon resonance (SPR) curve and increase the sensitivity of the system. The properties of the SPR curve are investigated versus a LC director angle and volume fraction of nanoparticles.
80 - High-Order Localized Spoof Surface Plasmonic Resonances Poster [Show abstract]
  • Zhen Liao, Southeast University, China
  • Xiaopeng Shen, Southeast University, China
  • Tiejun Cui, Southeast University, China
We introduce the concept of high-order spoof localized surface plasmon (LSP) resonances supported by textured metal disks with varied thicknesses. Through full-wave simulations, we show the emergence of geometrically-originated electromagnetic LSP modes in the microwave frequencies. Our findings shed light into the nature of spoof LSP, and open the way to the design of broadband plasmonic devices which can operate at very different frequency regimes.
81 - Application of Boundary Element Method to Transformation Cavities Poster [Show abstract]
  • Soo-Young Lee, Kyungpook National University, Korea (South)
The boundary element method (BEM) is known to be useless in a generic transformation cavity where refractive index changes gradually inside the dielectric cavity, because the Green function is not known for the generic refractive index profile. We demonstrate that the BEM is still useful when the transformation cavity is given by a conformal mapping of a homogeneous cavity. This is based on the fact that the inside Green function is known before the conformal mapping while the outside Green function is known after the conformal mapping. Using the BEM, we study chiral optical modes in an asymmetric transformation cavity.
82 - Passive Mode-Locked Spaser for Clock Generation in Plasmonic Devices Poster [Show abstract]
  • Alexander Dorofeenko, Institute for Theoretical and Applied Electromagnetics RAS, Russia
  • Igor Nechepurenko, All-Russia Research Institute of Automatics, Russia
  • Alexey Vinogradov, Institute for Theoretical and Applied Electromagnetics RAS, Russia
  • Alexander Pukhov, Institute for Theoretical and Applied Electromagnetics RAS, Russia
We propose a THz frequency clock generator for prospective plasmonic devices. The device is based on the optical frequency plasmonic generator (spaser), which includes both gain medium and saturable absorber. The latter enables a passive mode-locking regime and leads to spiking. This effect is confirmed by modelling using the realistic parameters.
83 - Dissipation-assisted Enhancement of the Dynamical Casimir Effect within a Metallic Photonic Crystal Poster [Show abstract]
  • Tsuyoshi Ueta, The Jikei University School of Medicine, Physics Laboratory, Japan
As well as a dynamical Casimir effect, it was shown that the higher harmonics of the ground state in a one-dimensional metallic photonic crystal are resonantly generated even without an incident wave just by artificially introducing lattice vibration to the photonic crystal . In the present study, the influence of optical absorption of metallic material on radiation of higher harmonic is investigated. We find that the influence of the optical absorption depends on the mode of radiation and on the form of a wave function and that it inconceivably even enhances the intensity of radiation of light.
84 - Optical Properties of Bulk Gold and Ultra-Thin Gold Films within PBE and GLLB-SC Exchange-Correlation Functionals: A Density Functional Theory Study Poster [Show abstract]
  • In-Bai Lin, National Taiwan University, Taiwan
  • Tony Wen-Hann Sheu, National Taiwan University, Taiwan
  • Jia-Han Li, National Taiwan University, Taiwan
The noble metal permittivities have size dependences. The calculated bulk gold permittivities by GLLB-SC are much closer to the experimental data than PBE results. The calculated permittivities of gold thin film by GLLB-SC and PBE are compared and used to electromagnetic simulations for gold thin film and grating on substrate.
14:45 - 16:30 - Oral sessions (Tuesday afternoon 1)
14:45 - Special Session 3: Photonic topological insulators and metamaterials I

Organizer(s): A. Femius Koenderink

14:45 - 15:15 - Inducing Photonic transitions for enabling next generation Silicon Photonics Invited oral [Show abstract]
  • Michal Lipson, Cornell University, USA
We show that photonic transitions enables novel functionalities on-chip including: CMOS compatible isolators (critical for on-chip networks) , ultra-high speed modulators (critical for high bandwidth datacom) as well as effective magnetic field for photons.
15:15 - 15:45 - Nanophotonics for tailoring light flow on large scales Invited oral [Show abstract]
  • Marin Soljacic, MIT, USA
Nanophotonics provides superb opportunities for tailoring the flow of light. This way, novel display technologies can be enabled, as well as many important functionalities for enabling optimal energy conversion, including angularly selective transmission of light. In order to make these phenomena useful for large systems, large-area nano-fabrication techniques have to be successfully implemented. In this talk, I will present some of our recent theoretical and experimental progress in exploring these opportunities.
15:45 - 16:15 - Trapping Light in Open Plasmonic Nanostructures Invited oral [Show abstract]
  • Mario Silveirinha, University of Coimbra, Portugal
It is shown that the non-radiative hybridization of volume plasmons in metals and the electromagnetic field gives the opportunity to trap light inside a bounded open resonator, and permits in theory sustaining free-oscillations with infinite lifetimes in the limit of vanishing material loss.
16:15 - 16:30 - Scattering Engineering: From Broadband Cloaking and Resonance Effects, to Embedded Scattering Eigenvalues in 3D Nanostructures Oral [Show abstract]
  • Francesco Monticone, The University of Texas at Austin, USA
  • Andrea Alu, The University of Texas at Austin, USA
Invisibility, resonant scattering and light trapping are among the most intriguing optical phenomena. Here, we show that these seemingly unrelated effects are tightly connected and can be tailored by suitably engineering the scattering response of composite nanoparticles. We demonstrate broadband cloaking and resonance effects, as well as embedded scattering eigenstates with infinite lifetime.
14:45 - Hyperbolic metamaterials

Session chairperson(s): Alexander Khanikaev

14:45 - 15:15 - Visible-frequency Unidirectional Optical Transmission using a Hyperbolic Metamaterial Invited oral [Show abstract]
  • Henri Lezec, NIST, USA
  • Ting Xu , NIST and University of Maryland, USA
Put your abstract here
15:15 - 15:45 - Populating the Large-Wavevector Realm: Bloch Volume Plasmon Polaritons in Hyperbolic and Extremely Anisotropic Metamaterials Invited oral [Show abstract]
  • Sergei Zhukovsky, DTU Fotonik, Technical University of Denmark, Denmark
  • Viktoriia Babicheva, National Research University of Information Technology, Mechanics and Optics, St. Petersburg, Russia, Russia
  • Alexei Orlov, National Research University of Information Technology, Mechanics and Optics, St. Petersburg, Russia, Russia
  • Andrei Andryieuski, DTU Fotonik, Technical University of Denmark, Denmark
  • J. Sipe, Department of Physics, University of Toronto, Canada
  • Andrei Lavrinenko, DTU Fotonik, Technical University of Denmark, Denmark
Optics of hyperbolic metamaterials is revisited in terms of large-wavevector waves, evanescent in isotropic media but propagating in presence of extreme anisotropy. Identifying the physical nature of these waves as Bloch volume plasmon polaritons, we derive their existence conditions and outline the strategy for tailoring their properties in multiscale metamaterials.
15:45 - 16:00 - Hyperbolic Metamaterials For Enhancement of Radiation to Free Space Oral [Show abstract]
  • Constantin Simovski, Aalto University, Finland
  • Costas Valagiannopoulos, Aalto University, Finland
  • Sergei Tretyakov, Aalto University, Finland
  • Igor Nefedov, Aalto University, Finland
  • Mohammad Mirmoosa, Aalto University, Finland
We suggest a way to convert the near-field energy of a dipole source into far-field radiation using finite-size hyperbolic metamaterial samples. This is achieved by a proper choice of the material sample shape, which should be tapered or curved. This allow dramatic enhancement of radiation of small dipole sources to free space compared to the same dipole in the absence of metamaterial. The results are confirmed by numerical investigations of concave geometries of metamaterial samples excited by dipoles in a 3D groove or in a 2D cut.
16:00 - 16:15 - Excitation of Bulk Plasmon Polaritons in 1D and 2D Hypergrating-based Optical HMMs with Highly Directional Spontaneous Emission Enhancement No show [Show abstract]
  • Antonio De Luca, University of Calabria, Italy
  • Kandammathe Valiyaveedu Sreekanth, Case Western Reserve University, USA
  • Giuseppe Strangi, Case Western Reserve University, USA
<p> We report the fabrication of hyperbolic metamaterials to demonstrate the excitation of bulk plasmon polaritons by means of properly designed 1D and 2D metallic diffraction gratings, at optical and near infrared frequencies. Moreover, a large modification of spontaneous emission rates confirms the presence of high-k modes inside the HMM structure.</p>
16:15 - 16:30 - Experimental Verification of Subwavelength Propagation of THz Wave through Hyperbolic Metamaterials Oral [Show abstract]
  • Fumiaki Miyamaru, Shinshu University, Japan
  • Kotaro Murai, Shinshu University, Japan
  • Tsubasa Nishida, Shinshu University, Japan
  • Shinichiro Hayashi, RIKEN, Japan
  • Koji Nawata, RIKEN, Japan
  • Hiroaki Minamide, RIKEN, Japan
  • Masahiko Tani, University of Fukui, Japan
  • Mitsuo Takeda, Shinshu University, Japan
We experimentally demonstrate a propagation of THz wave through a hyperbolic metamaterial with a beam width of subwavelength scale. Our metamaterial consists of a metallic wire array, which was made by a laser ablation process and a layer-by-layer fabrication technique. We observed that the incident THz wave, the width of which is about half of the wavelength, propagated through 10-mm-long metamaterial without diffusing until the end of the metamaterial. Our layer-by-layer fabrication technique has an advantage for making precise metamaterials and a flexibility.
14:45 - Tunable Metamaterials

Session chairperson(s): Anatoly Zayats

14:45 - 15:15 - Voltage Tunable Strong Coupling with Planar Metamaterials: From Fundamentals to Optoelectronic Devices Invited oral [Show abstract]
  • Igal Brener, Sandia National Labs, USA
Metamaterial resonators can couple strongly to different types of electronic excitations in semiconductors. These excitations can be designed over a wide range of wavelengths using semiconductor heterostructures. Also, their existence or transition frequency can be controlled with the application of an electrical bias. These effects can be used as a powerful platform for infrared optoelectronic devices.
15:15 - 15:30 - Generalized Snell’s Law and Electro-Optic Control of Polarization in Metasurface Twisted Nematic Liquid Crystal Cell Oral [Show abstract]
  • Yeon Ui Lee, Ewha Womans University, Korea (South)
  • Jeong Weon Wu, Ewha Womans University, Korea (South)
In this study, a complementary metasurface is designed and the generalized Snell’s law is demonstrated experimentally. Moreover, the polarization direction of extraordinary beam satisfying the generalized Snell's law is electrically controlled in complementary metasurface twisted nematics liquid crystal cell.
15:30 - 15:45 - Dynamic Beam Steering Properties of an Electrically Tuned Liquid Crystal Based CRLH Leaky Wave Antenna Oral [Show abstract]
  • María Roig, Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Germany
  • Matthias Maasch, Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Germany
  • Christian Damm, Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Germany
  • Rolf Jakoby, Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Germany
A continuously electrically tunable composite right/left-handed leaky-wave antenna based on liquid crystal is presented. Beam steering from -6° to 9° with respect to the broadside at a fixed operation frequency of 26.7GHz is achieved by applying a tuning voltage between 0 V and 120 V. Far field measurements and the response times of the liquid crystal for this specific application are analyzed in detail.
15:45 - 16:00 - A New Class of Tunable Multi-layer Meta-Surfaces Oral [Show abstract]
  • Marina Mavridou, Electrical and Computer Engineering, School of Electronic, University of Birmingham , United Kingdom
  • Alexandros P. Feresidis, Electrical and Computer Engineering, School of Electronic, University of Birmingham , United Kingdom
A new class of tunable multi-layer meta-surfaces is presented whereby the proposed structures produce very low losses at millimeter wave frequencies. Tuning of the reflection and transmission response of the meta-surfaces is achieved by means of piezoelectric actuators positioned around the surfaces. The proposed actuators dynamically change the thickness of the air cavities in the proposed structure, due to their property of expanding vertically under DC biasing, which results in tuning their reflection and transmission characteristics.
16:00 - 16:15 - Giant Kerr rotation enhancement in hybrid magneto-plasmonic metamaterials Oral [Show abstract]
  • Evangelos Atmatzakis, University of Southampton, United Kingdom
  • Nikitas Papasimakis, University of Southampton, United Kingdom
  • Vassili Fedotov, University of Southampton, United Kingdom
  • Nikolay Zheludev, University of Southampton / Nanyang Technological University, United Kingdom / Singapore
We demonstrate for the first time an order of magnitude enhancement of Kerr rotation in metamaterial resonator arrays consisting of plasmonic (Au) and ferromagnetic (Ni) materials. Our results allow magnetic control over the metamaterial response and integrated magneto-plasmonics
16:15 - 16:30 - Anomalous optical switching during semiconductor-metal phase transition of VO2 films on Si Oral [Show abstract]
  • concita sibilia, Università di Roma La Sapienza, Italy
  • Roberto Li Voti, Università di Roma La Sapienza, Italy
  • Grigore Lehau, Università di Roma La Sapienza, Italy
  • Mario Bertolotti, Università di Roma La Sapienza, Italy
– We present a detailed infrared study of the semiconductor-to-metal transition (SMT) in a vanadium dioxide film deposited on silicon wafer and in a multilayer Cu/VO2 Structure. All structures have been studied in the mid-infrared (MIR) region by analyzing the transmittance and the reflectance measurements.
16:30 - 17:00 - Coffee break (Tuesday afternoon)
17:00 - 18:30 - Oral sessions (Tuesday afternoon 2)
17:00 - Special Session 3: Photonic topological insulators and metamaterials II

Organizer(s): A. Femius Koenderink

17:00 - 17:30 - Topologically Nontrivial Photonics with Synthetic Magnetic Field Induced by Bianisotropy Invited oral [Show abstract]
  • Alexander Khanikaev, CUNY, Queens College and the Graduate Center, USA
It is shown that with an appropriate choice of the effective parameters of the periodic metamaterial, the bianisotropy emulates the effect of magnetic field thus leading to the topologically nontrivial state of light. As a result, boundaries of such photonic metacrystal exhibit topologically robust edge transport insensitive to structural imperfections and defects.
17:30 - 18:00 - Terahertz Plasmonic Excitations in Bi2Se3 Topological Insulator Invited oral [Show abstract]
  • Stefano Lupi, Department of Physics, Sapienza University of Rome, Italy
Plasmons in the terahertz (THz) range have been observed in Bi2Se3 topological insulator films patterned in form of micro-structures. These plasmons have been assigned to collective excitations of massless Dirac carriers located onto the Bi2Se3 topological surfaces. Their lifetime is mainly determined by the single-particle scattering rate and results nearly independent of temperature as expected for topological carriers.
18:00 - 18:15 - Topologically Ordered Metamaterials Oral [Show abstract]
  • Wenlong Gao, The University Of Birmingham, United Kingdom
  • Mark Lawrence, The University Of Birmingham, United Kingdom
  • Biao Yang, The University Of Birmingham, United Kingdom
  • Fu Liu, City University of Hong Kong, China
  • Fengzhou Fang, Tianjin University, China
  • Benjamin Beri, The University Of Birmingham, United Kingdom
  • Jensen Li, The University Of Birmingham, United Kingdom
  • Shuang Zhang, The University Of Birmingham, United Kingdom
In this paper we reveal the first time-reversal-invariant topological metamaterial exhibiting robust photonic surface states protected against disorder on all length scales. By combining chirality and hyperbolicity we show that polarization eigenstates with opposite handedness can become well separated in k-space leading to a new form of topological order.
18:15 - 18:30 - Photonic Simulation Of The Dirac Equation In Metamaterials Oral [Show abstract]
  • Hong Chen, School of Physics, Tongji Universy, China
Abstract – We propose to establish the relation between the topological order in condensed matter systems and the chirality in metamaterials, by mapping explicitly Maxwell’s equations to the Dirac equation in one dimension (1D). We report experimental implements of two typical topological phenomena in the Dirac equation: band inversion and end states. Our finding provides a proof-of-principle example that electromagnetic wave in the metamaterials can be used to simulate the topological order in condensed matter systems and quantum phenomena in relativistic quantum mechanics in a controlled laboratory environment.
17:00 - Transformation electromagnetics

Session chairperson(s): Steven Cummer

17:00 - 17:15 - Beyond Transformation Optics - A Ray Paradigm for Generalized Transformation Media Oral [Show abstract]
  • Paul Kinsler, Blackett Laboratory, Imperial College London, United Kingdom
  • Martin McCall, Blackett Laboratory, Imperial College London, United Kingdom
Transformation electromagnetics is exact, but converting the methodology to other areas is problematic. Our new transformational theory and ray equation applies to any wave physics in the short wavelength/eikonal limit. It can surpass a conformal approach, and even reconstruct the properties of a full wave theory, whether EM or acoustic.
17:15 - 17:30 - Revealing Hidden Symmetries In Plasmonic Systems: A Transformation Optics Approach No show [Show abstract]
  • Matthias Kraft, Imperial College London, United Kingdom
  • John B. Pendry, Imperial College London, United Kingdom
  • Yu Luo, Imperial College London, United Kingdom
Symmetry is one of the most fundamental concepts in many branches of physics, ranging from particle physics to solid state physics. In this talk we will provide a systematic approach based on transformation optics to reveal hidden symmetries in plasmonic systems, which facilitates analytical computation and gives a deep physical insight into the system at hand.
17:30 - 17:45 - Thermal Concentrator and Electrical Cloak and Bifunctionality: Towards Transformation Multiphysics Oral [Show abstract]
  • Massimo Moccia, University of Sannio, Italy
  • Giuseppe Castaldi, University of Sannio, Italy
  • Salvatore Savo, Harvard University, USA
  • Yuki Sato, Harvard University, USA
  • Vincenzo Galdi, University of Sannio, Italy
Through the design and synthesis (in terms of realistic material constituents) of a metamaterial shell that simultaneously behaves as a thermal concentrator and an electrical "invisibility cloak", we present a first step towards a more general "transformation multiphysics" framework that allows independent and simultaneous coordinate-transformation-based manipulation of multiple physical phenomena.
17:45 - 18:00 - Smart Transformation Optics based on Auxetic Metamaterials Oral [Show abstract]
  • Kyoungsik Kim, Yonsei University, Korea (South)
  • Dongheok Shin, Yonsei University, Korea (South)
  • Yaroslav Urzhumov, Duke University, USA
  • Donghwan Lim, Yonsei University, Korea (South)
  • David Smith, Duke University, USA
Smart metamaterials, integration of both electromagnetic and mechanical characteristics, suggests new transformation optics devices like arbitrary bending waveguide and shape-conforming cloaks. To design these devices, we need general transformation optics rule which is linkage between mechanical and electromagnetic property. So we derive quasi-conformal transformation rules from general elasto-static equation when elastically deformed. These solutions can be implemented to auxetic metamaterial structure operating as smart transformation optics devices.
18:00 - 18:15 - Directional Emission of Ultrahigh-Q mode from Inhomogeneous Dielectric Cavities Oral [Show abstract]
  • Muhan Choi, School of Electronics Engineering, Kyungpook National University, Korea (South)
  • Yushin Kim, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Korea (South)
  • Soo-Young Lee, School of Electronics Engineering, Kyungpook National University, Korea (South)
  • Jung-Wan Ryu, Department of Physics, Pusan National University, Korea (South)
  • Inbo Kim, School of Electronics Engineering, Kyungpook National University, Korea (South)
  • Jae-Hyung Han, School of Electronics Engineering, Kyungpook National University, Korea (South)
  • Heung-Sik Tae, School of Electronics Engineering, Kyungpook National University, Korea (South)
  • Bumki Min, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology(KAIST), Korea (South)
Using the transformation optics theory, we have shown that in inhomogeneous dielectric cavities their optical mode characteristics like Q-factor and emission directionality can be tailored at will. The Q-spoiling problem arising when one breaks the rotational symmetry of the cavity for directional emission does not occur in our scheme. By choosing an appropriate cavity boundary shape and refractive index profile, it is possible to attain the unidirectional emission of ultrahigh-Q mode which can be utilized in optoelectronic device applications in the foreseeable future.
18:15 - 18:30 - Metasurfaces to Select Waveforms at the Same Frequency Oral [Show abstract]
  • Hiroki Wakatsuchi, Nagoya Institute of Technology, Japan
  • Jeremiah J. Rushton, University of California, San Diego, USA
  • Sanghoon Kim, University of California, San Diego, USA
  • Daniel F. Sievenpiper, University of California, San Diego, USA
We present a new concept of metasurfaces that vary the electromagnetic responses depending not only on the frequency of an incoming surface wave but also on the waveform. This new characteristic enables us to control electromagnetic waves a new manner, thus potentially leading to development of new electromagnetic techniques and applications.
17:00 - Non-reciprocal and non-linear metamaterials

Session chairperson(s): Henri Lezec

17:00 - 17:30 - Metal-Dielectric Photonic Structures with Extreme Directionality: A Concept of Wide-Aperture Omnidirectional Isolator Invited oral [Show abstract]
  • Andrey Chabanov, University of Texas at San Antonio, USA
  • Kyle Smith, University of Texas at San Antonio, USA
  • Turhan Carroll, Air Force Research Laboratory, USA
  • Ilya Vitebskiy, Air Force Research Laboratory, USA
Photonic structures involving metallic nanolayers can display extreme directionality. Here we further show that magnetophotonic structure involving metallic nanolayers can behave as a wide-aperture omnidirectional isolator. It transmits light in a single (forward) direction, while the light incident from the opposite side is reflected back to space regardless of polarization and direction of incidence.
17:30 - 17:45 - Angular Momentum-Biased Metamaterials for Filtering Waveguide Components and Antennas with Non-Reciprocal Behavior Oral [Show abstract]
  • Davide Ramaccia, "RomaTre" University, Italy
  • Filiberto Bilotti, "RomaTre" University, Italy
  • Alessandro Toscano, "RomaTre" University, Italy
In this contribution, we present a magnet-less non-reciprocal filtering module to be used in waveguide and antenna system for circular polarization applications. The filtering module, sandwiched between two thin dielectric slabs, consists of a annular aperture in a metallic screen which exhibits zero reflection, and thus maximum transmission, in a narrow frequency band around its resonant frequency. An artificial spatiotemporal modulation of the effective permittivity function around the annular aperture is introduced and, exploiting the concept of Angular Momentum-biased metamaterial, a non-reciprocity behavior takes place. The transmission and reflection coefficients turn out to be different for left- and right-handed circular polarized fields when impinging from the same side or, similarly, for the same polarization impinging from the opposite sides. Then, the non-reciprocal filtering module has been integrated in a circular waveguide and in an aperture antenna and we show some preliminary results of this new family of magnet-less non-reciprocal components.
17:45 - 18:00 - Bulk Plasmon Polariton-Gap Soliton-Induced Transparency In One-Dimensional Kerr-Metamaterial Superlattices Oral [Show abstract]
  • Solange Cavalcanti, Instituto de Física - Universidade Federal de Alagoas, Brazil
  • Paulo Brandão, Instituto de Física Gleb Wataghin - Universidade Estadual de Campinas, Brazil
  • Alexys Bruno-Alfonso, Departamento de Matemática, Faculdade de Ciências - Universidade Estadual Paulista, Brazil
  • Luiz Oliveira, Instituto de Física Gleb Wataghin - Universidade Estadual de Campinas, Brazil
A theoretical study of one-dimensional heterostructure composed by bilayers made of [nondispersive nonlinear(A)/dispersive linear(B)] materials and illuminated by an obliquely incident electromagnetic wave is carried out. These stacks are known for exhibiting a robust bulk-like plasmon-polariton gap (PP-gap) for frequencies around the plasma frequency. Substitution of the nondispersive linear layer by a nonlinear Kerr layer induces full transparency for frequencies close to the edge of the PP-gap. We investigated localized plasmon-polariton-gap solitons under this regime.
18:00 - 18:15 - Probing the Enhancement of Third-Harmonic Generation in Plasmonic Nanostructures Via Nonlocal Effects Oral [Show abstract]
  • Cristian Ciraci, Istituto Italiano di Tecnologia (IIT), Italy
  • Michael Scalora, C.M. Bowden Research Facility, US Army, RDECOM, Redstone Arsenal, United States
  • David R. Smith, Duke University, United States
Free-electron nonlocality in metallic nanostructures has been shown to dramatically impact the linear optical response to the detriment of the maximum field enhancement that can be achieved. This limit in turn affects all nonlinear processes, which depend on field amplitudes. A study of third-harmonic generation in metal film-coupled nanowires reveals that for sub-nanometer gaps classical nonlocality may enhance the effective nonlinearity by several orders of magnitude as the field penetrates deeper inside the metal than that predicted assuming a purely local electronic response.
18:15 - 18:30 - Nonlinear Spectroscopy of Magnetic Dipole Metasurfaces Oral [Show abstract]
  • Tatiana Murzina, Physics department, M.V.Lomonosov Moscow State university, Russia
  • Sergey Kruk, Australian National University, Nonlinear Physics Centre, Australia
  • Anton Bykov, M.V. Lomonosov Moscow State University, Physics Department, Russia
  • Irina Kolmychek, M.V. Lomonosov Moscow State University, Physics Department, Russia
  • Evgeniy Mamonov, M.V. Lomonosov Moscow State University, Physics Department, Russia
  • Martin Weismann, University College London, Department of Electronic and Electrical Engineering, UK
  • Nicolae Panoiu, University College London, Department of Electronic and Electrical Engineering, UK
  • Dragomir Neshev, Australian National University, Nonlinear Physics Centre, Australia
  • Yuri Kivshar, Australian National University, Nonlinear Physics Centre, Australia
We have studied experimentally and computationally the second harmonic generation (SHG) from magnetic metasurfaces exhibiting electric and magnetic dipole resonances in the visible/near IR spectral range. The spectroscopy of the intensity and phase of the second harmonic wave generated by the samples show an increase of the SHG efficiency as the fundamental wavelength is being tuned in vicinity of the magnetic resonance of the metasurface. This is accompanied by the π/2 phase shift of the SHG wave. The role of magnetic dipole and electric quadruple moments in SHG response is discussed.
18:30 - 18:45 - Short break (Tuesday afternoon)
18:45 - 20:00 - Plenary session (Tuesday afternoon)
18:45 - Plenary session (Tuesday afternoon)

Session chairperson(s): Christophe Caloz

18:45 - 19:15 - Complementary Metamaterial Holographic Antenna for Beam Forming and Imaging No show [Show abstract]
  • David Smith, Duke University, USA
  • Nathan Kundtz, Kymeta Corporation, USA
We describe the structure of a complementary metamaterial architecture that can be used for a variety of beam-forming and imaging applications across the microwave spectrum. This simple geometry allows for a rich design palette and potentially new classes of competitive, low-cost devices.
19:15 - 19:45 - Surface plasmon enhanced optoelectronics Invited oral [Show abstract]
  • Pierre Berini, School of Electrical Engineering and Computer Science, Canada
Metallic nano-structures such as nano-antennas and nano-gratings operate effectively as a coupling structure for incident beams to surface plasmon polaritons (SPPs). When deposited on a semiconductor such nano-structures ensure strong field overlap with active regions while operating simultaneously as a device electrode. The excitation of SPPs alters conventional trade-offs between responsivity and speed in photodetectors, or modulation and speed in modulators, because the active region can be shrunk to nano-scale dimensions while maintaining good optoelectronic performance due to field enhancement. Surface plasmon enhanced photodetectors and modulators on semiconductors are reviewed and discussed.
19:45 - 20:00 - The Gartner Hype Cycle for Metamaterials Oral [Show abstract]
  • George Palikaras, Metamaterial Technologies Inc., Canada
Even though metamaterials have been around for over 15 years, their optical applications have yet to gain significant commercial traction. Inspired by the Gartner Hype Cycle, which tracks the evolution of a technology over time, in this paper we examine the field of metamaterials from this perspective.
20:00 - 20:15 - Metamaterials for Defense Applications Oral [Show abstract]
  • Augustine Urbas, Air Force Research Lab, USA
  • Mark Spector, Office of Naval Research, USA
  • Steven Weiss, Army Research Lab, USA
Metamaterials provide the ability to design materials properties to meet the unique needs of applications beyond what is possible with conventional materials. From spatially tailored dielectrics to tunable, dynamic material properties and unique nonlinear behavior, these systems offer tremendous flexibility to application engineers. Applications across the electromagnetic spectrum have been proposed; from novel RF antennas to devices utilizing optical magnetism. In an effort to develop a full set of application tools and gain an engineering understanding of metamaterials, defense research programs have pursued fundamental and applied goals with the aim of mapping out the potential of metamaterials and enhancing metamaterial design capability. These programs have pursued optical, RF and even acoustic materials and applications. The aim of this work is to gauge the readiness and maturity of metamaterials for the field. One of the key observations that emerges from such a pursuit are scientific questions and methods needs that can be returned to the research community to overcome challenges encountered in application venues. In some cases, we find limitations that are not consistent with the current understanding of a metamaterial system or identify a critical need in modeling a new phenomena or effect. With these insights in mind, such results from a number of application studies will be presented that span defense research interests.
27 August 2014 / Start time: 9 h 0 min
09:00 - 10:00 - Plenary Session III
09:00 - Plenary Session III

Session chairperson(s): Sergei Tretyakov

09:00 - 10:00 - Optical Tunability with Graphene and Other Atomically Thin Materials Plenary [Show abstract]
  • Javier García de Abajo, ICFO - The Institute of Photonic Sciences, Spain
Plasmons in graphene exhibit several advantages with respect to other conventional plasmonic materials, including its large electro-optical tunability and extreme optical-field enhancement, which are suitable building blocks to produce complete optical absorption, extreme light modulation, and ultra sensitive detection devices. Other atomically thin materials share similar properties with graphene. We discuss here the challenges and opportunities introduced by these types of materials, including their application to a new generation of quantum optics and electro-optical metamaterials.
10:00 - 10:30 - Coffee break (Wednesday morning)
10:30 - 12:00 - Oral sessions (Wednesday morning)
10:30 - Special Session 2: Fabrication and characterization of metamaterials II

Organizer(s): Alexandra Boltasseva

10:30 - 11:00 - Metamaterials And Plasmonic Materials Manufactured By Crystal Growth Methods Invited oral [Show abstract]
  • Dorota Anna Pawlak, Institute of Electronic Materials Technology, Poland
  • Marcin Gajc, Institute of Electronic Materials Technology, Poland
  • Katarzyna Sadecka, Institute of Electronic Materials Technology, Poland
  • Pawel Osewski, Institute of Electronic Materials Technology, Poland
  • Karolina Korzeb, Institute of Electronic Materials Technology, Poland
  • Katarzyna Kolodziejak, Institute of Electronic Materials Technology, Poland
  • Andrzej Klos, Institute of Electronic Materials Technology, Poland
  • Alessandro Belardini, Sapienza Università di Roma, Italy
  • Grigore Leahu, Sapienza Università di Roma, Italy
  • Concita Sibilia, Sapienza Università di Roma, Italy
We report on developments in fabricating nano and micro-structured volumetric plasmonic materials and metamaterials utilizing crystal growth techniques as the micro-pulling down method. Materials developed by directional solidification of eutectic composites and directional solidification of dielectrics nonchemically doped with functional nanoparticles.
11:00 - 11:30 - Fabrication of Isotropic Infrared Metamaterials Invited oral [Show abstract]
  • Takuo Tanaka, RIKEN, Japan
Fabrication technique of an isotropic infrared metamaterial consisting of fourfold-symmetric 3D SRRs was proposed. A developed metal-stress driven self-folding method was demonstrated for mass-productive formation of the 3D SRRs.
11:30 - 11:45 - Electrically Tunable Metamaterials For The Visible Spectral Range Oral [Show abstract]
  • Andrey Bogdanov, Ioffe Institute, Russia
  • Ivan Shishkin, ITMO University, Russia
  • Jose Munárriz, GISC, Departamento de Fisica de Materiales, Universidad Complutense, Spain
  • Andrey Malyshev, GISC, Departamento de Fisica de Materiales, Universidad Complutense, Spain
We propose a new type of electrically tunable metamaterial for the visible spectral range. The metamaterial comprises metal nanoparticles embedded into a thin dielectric film grown on top of a heavily doped semiconductor. We predict that a static electric field applied perpendicular to the dielectric-semiconductor interface results in considerable shifts of plasmonic resonances of metallic nanoparticles. Therefore, various optical characteristics of the system, such as, the scattering cross section of a single metal nanoparticle or the reflection coefficient of their array can be controlled electrostatically. This opens possibilities to design new opto-electronic devices, tunable mirrors, modulators, filters, switchers etc.
11:45 - 12:00 - A reconfigurable 3D plasmonic nanomachine Oral [Show abstract]
  • Na Liu, Max Planck Institute for Intelligent Systems, Germany
Active control of three-dimensional (3D) configuration is one of the key steps towards intelligent plasmonic nanomachines with desired functionalities. We lay out a multi-disciplinary strategy to create a reconfigurable 3D plasmonic nanomachine, which executes DNA-regulated conformational changes on the nanoscale.
10:30 - All-dielectric metamaterials

Session chairperson(s): Zubin Jacob

10:30 - 11:00 - Selected Problems of Light Scattering by Dielectrics Nanoparticles with High Refractive Index Invited oral [Show abstract]
  • Boris Lukiyanchuk, Data Storage Institute, Singapore
A unique peculiarity of high-refractive index dielectric nanoparticles is their ability to scatter light mainly in a preferred direction. This property is a consequence of far-field Kerker-type interference of electric and magnetic dipoles that can be excited coherently inside such nanoparticles. These high-refractive index dielectric nanostructures can substitute plasmonics in some applications.
11:00 - 11:15 - Magnetic Response of Rotationally Symmetric Dielectric Particles of Arbitrary Shape Oral [Show abstract]
  • Svetlana Kuznetsova, University of Nizhny Novgorod, Russia
  • Alexey Maslov, University of Nizhny Novgorod, Russia
  • Michael Bakunov, University of Nizhny Novgorod, Russia
We developed a simple semi-analytical approach for calculating the magnetic response of rotationally symmetric dielectric particles to an axially applied magnetic field. By using this approach, we studied the self-consistent current distributions, frequencies of resonant modes, and magnetic moments of dielectric cones with arbitrary height-to-diameter ratio.
11:15 - 11:45 - Tunneling of Electromagnetic Radiation in All – Dielectric Gradient Metamaterials: Paradoxes and Perspectives No show [Show abstract]
  • Alexander Shvartsburg, Joinbt Institute for High Temperatures RAS, Russia
The unusual features of total internal reflection (TIR) and frustrated total internal reflection (FTIR) of light in gradient dielectrics, characterized by continuous spatial variations of dielectric permittivity , are considered.The effect of weakly attenuated tunneling of light through the periodical gradient nanostructures is shown analytically and verified in the experiments.
11:45 - 12:00 - Ceramic photonic glass for broadband omnidirectional reflection Oral [Show abstract]
  • Pavel Dyachenko, Hamburg University of Technology, Germany
  • Jefferson do Rosario, Hamburg University of Technology, Germany
  • Elisabeth Leib, University of Hamburg, Germany
  • Alexander Petrov, Hamburg University of Technology, Germany
  • Tobias Vossmeyer, University of Hamburg, Germany
  • Gerold Schneider, Hamburg University of Technology, Germany
  • Horst Weller, University of Hamburg, Germany
  • Manfred Eich, Hamburg University of Technology, Germany
<p> We designed and experimentally investigated a ceramic photonic glass fabricated by sedimintation of zirconia microparticles. In contrast to a photonic crystal, the total reflection from the ceramic photonic glass has broadband characteristics with a high reflection of &gt;85% even at small layer thicknesses of 45 µm within a 1µm wavelength bandwidth.</p>
10:30 - Graphene

Session chairperson(s): David Smith

10:30 - 11:00 - Surface plasmons and phonon polaritons in atomically thin van der Waals crystals Invited oral [Show abstract]
  • Dmitri Basov, UCSD, USA
<p> Layered van der Waals (vdW) crystals consist of individual atomic planes weakly coupled by vdW interaction, similar to graphene monolayers in bulk graphite. These materials can harbor superconductivity and ferromagnetism with high transition temperatures, emit light and exhibit topologically protected surface states. An ambitious practical goal is to exploit atomic planes of vdW crystals as building blocks of more complex artificially stacked structures where each such block will deliver layer-specific attributes for the purpose of their combined functionality. Infrared (IR) nano-spectroscopy and nano-imaging experiments on hexagonal boron nitride (hBN) have uncovered rich optical effects associated with phonon polaritons in this prototypical van der Waals crystal. We launched, detected and imaged the polaritonic waves in real space and altered their wavelength by varying the number of crystal layers in our specimens [Dai et al. Science, 343, 1125, (2014)]. Unlike surface plasmons in graphene that we have imaged using a similar nano-IR toolset [Fei et al. Nature 487, 82 (2012)], highly confined phonon polaritons are immune to electronic losses and therefore can travel over distances exceeding 10-s of microns. I will also discuss an ability to control plasmonic response of graphene at femto second time scales that we have demonstrated using a unique pump-probe nano-IR apparatus [Wagner et al. Nano Letters 14, 894 (2014)].</p>
11:00 - 11:15 - Reconfigurable Metamaterial Terahertz Filters based on graphene Oral [Show abstract]
  • Kai Yang, University of Utah, USA
  • Shuchang Liu, University of Utah, USA
  • Sara Arezoomandan, University of Utah, USA
  • Ajay Nahata, University of Utah, USA
  • Berardi Sensale-Rodriguez, University of Utah, USA
A reconfigurable metamaterial terahertz filter based on graphene is presented and discussed. The device structure consists of periodic metallic rings with gaps, where graphene stripes are located. It is shown that the filter resonance frequency can easily be adjusted by varying the conductivity of graphene; this is practically implemented via changing the number of stacked graphene layers.
11:15 - 11:30 - Amplification Of Terahertz Radiation By Graphene Metasurfaces Oral [Show abstract]
  • Viacheslav Popov, Kotelnikov Institute of Radio Engineering and Electronics (Saratov Branch), Russia
  • Taiichi Otsuji, Tohoku University, Research Institute of Electrical Communication, Japan
  • Victor Ryzhii, Tohoku University, Research Institute of Electrical Communication, Japan
We report theoretical results on terahertz wave amplification by the stimulated emission of resonant plasmons in a population inverted graphene with a metal grating of sub-micron period separated from graphene by a thin barrier layer. The condition for the THz lasing by plasmons in such graphene terahertz metasurface is formulated.
11:30 - 11:45 - Plasmonic Terahertz Amplification in Graphene-Based Asymmetric Hyperbolic Metamaterial Oral [Show abstract]
  • Igor Nefedov, Aalto University, Department of Radio Science and Engineering, Finland
  • Leonid Melnikov, Yuri Gagarin State Technical University of Saratov, Institute of Electronics and Machinery, Russia
We propose and theoretically explore terahertz amplification based on stimulated generation of plasmons in graphene asymmetric hyperbolic metamaterials (AHM), strongly coupled to terahertz radiation. In opposite to terahertz amplification in resonant nanocavities AHM provides a wide-band THz amplification without any reflection in optically thin graphene multilayers.
11:45 - 12:00 - “Tunnel” For Electron Waves In Graphene Superlattices Oral [Show abstract]
  • David Fernandes, Department of Electrical Engineering, Instituto de Telecomunicações, University of Coimbra, Pólo II, Portugal
  • Nader Engheta, University of Pennsylvania, Department of Electrical and Systems Engineering, United States of America
  • Mario Silveirinha, Department of Electrical Engineering, Instituto de Telecomunicações, University of Coimbra, Pólo II, Portugal
Motivated by the possibility of extending transformation optics to the propagation of electrons in condensed matter systems, in this work we propose that graphene-based nanostructures can be used to demonstrate a “tunnel” for electron waves. Using an effective medium framework, we demonstrate from a theoretical standpoint, that two properly engineered graphene-based nanomaterials can allow bridging two different regions of space, as if the region in between was non-existent.
12:00 - 13:15 - Lunch break (Wednesday)
13:15 - 15:00 - Oral sessions (Wednesday afternoon 1)
13:15 - Special Session 5: Metamaterial engineering: from microwaves to optics. In memory of M. Sorolla I

Organizer(s): Miguel Beruete

13:15 - 13:45 - The Contribution Of Prof. Mario Sorolla To Artificial Electromagnetic Materials Keynote [Show abstract]
  • Miguel Beruete, Universidad Pública de Navarra, Spain
  • Francisco Falcone, Universidad Pública de Navarra, Spain
  • Miguel Navarro-Cía, Imperial College London, UK
In this talk, we will review the contribution of Prof. Mario Sorolla to the field of artificial materials, highlighting several of his research milestones in metamaterials. We will cover his contributions to one dimensional metamaterial designs, mainly in microwave planar circuit technology. Additionally, his work on two- and three dimensional metamaterial structures will be presented, with particular emphasis on quasioptical structures like prisms, lenses, polarizers, etc. His last contributions to the field of terahertz (THz) waves will be shown.
13:45 - 14:15 - Recent Progress on FSS and Extraordinary Transmission Analytical Modeling Invited oral [Show abstract]
  • Francisco Mesa, University of Sevilla, Spain
  • Raul Rodriguez-Berral, University of Sevilla, Spain
  • Francisco Medina, University of Sevilla, Spain
The modeling of the scattering of plane waves by 1D/2D periodic distributions of planar scatterers has been a classical research topic in applied electromagnetism for decades. The authors of this paper initiated a research line in this field seven years ago, which was mostly motivated by our interaction with Prof. Mario Sorolla during his sabbatical leave in our lab. He introduced us to the topic of extraordinary transmission through sub-wavelength apertures in metal plates. This contribution presents our most recent advances on the subject, focused on the analytical circuit modeling of 1D mushroom-like structures and 2D arrays of rectangular patches/apertures under conical incidence illumination. Multi-modal equivalent networks are rigorously derived from the corresponding integral equations. The values of the electrical parameters of those networks are systematically obtained from reasonable estimations of the currents and fields.
14:15 - 14:30 - One-Way Wave Propagation and Symmetry Breaking in Waveguide Metamaterials Oral [Show abstract]
  • David Di Ruscio, Sapienza University of Rome, Italy
  • Cristian Della Giovampaola, University of Pennsylvania, USA
  • Arthur Davoyan, University of Pennsylvania, USA
  • Nader Engheta, University of Pennsylvania, USA
Breaking time reversal symmetry of the electromagnetic propagation is an important aspect for nonreciprocal devices, e.g. isolators or circulators. In this talk, we show our theoretical efforts in merging the concept of nonreciprocity with structures obtained using the concept of waveguide metamaterials with magneto-optical activity.
14:30 - 14:45 - Duality for 3D Metamaterial Resonators? Oral [Show abstract]
  • Javier L. Araque, National University of Colombia, Colombia
  • Juan D. Baena, National University of Colombia, Colombia
Answering the question-title, probably quasi-duality is possible for isotropic resonators. It has been found that an isotropic cubic resonator and its complementary counterpart have dual polarizability tensors. However, non isotropic cubic resonators are not dual respect to their complementary particles.
14:45 - 15:00 - Ultrathin, optically tunable flexible metamaterial-film based terahertz bandpass filter Oral [Show abstract]
  • Michael A. Hoeh, University of Kaiserslautern, Germany
  • Jens Neu, University of Kaiserslautern, Germany
  • Klemens M. Schmitt, University of Kaiserslautern, Germany
  • Marco Rahm, University of Kaiserslautern, Germany
We fabricated an ultrathin flexible terahertz bandpass filter based on a metamaterial film with embedded crystalline silicon. The thickness of the bandpass filter is less than 25 µm which guarantees quasi etalon-free operation. We optically tuned the amplitude transmission of the filter with a modulation depth of 98% at an operating frequency of 0.67 THz.
13:15 - Quantum metamaterials

Session chairperson(s): dmitri basov

13:15 - 13:45 - Metamaterials with Quantum Gain Invited oral [Show abstract]
  • Ortwin Hess, Imperial College London, United Kingdom
New theoretical insights and experimental advances have shown that gain media may efficiently be integrated into the fabric of nanoplasmonic metamaterials, removing losses and allowing for ultrafast light sources and quantum emitters on the nanoscale.
13:45 - 14:15 - Generalized nonlocal response in nanoplasmonics: Semiclassical theory of dimers without need for a quantum picture? Invited oral [Show abstract]
  • N. Asger Mortensen, Technical University of Denmark, Denmark
Metallic nanostructures are rich on optical resonances associated with localized surface plasmon excitations. Observations of plasmonic phenomena at the sub-nanometer to atomic scale have recently stimulated the development of various sophisticated theoretical approaches for their description. Here we rather present a comparatively simple semiclassical generalized nonlocal optical response (GNOR) theory that unifies quantum-pressure convection effects and induced-charge diffusion kinetics. The theory explains surprisingly well both the frequency shifts and the gap dependent broadening observed in the cross-over regime from bonding-dipole plasmons to charge-transfer plasmons in dimers, thus presenting a classical broadening mechanism without need for broadening mechanisms associated with short-circuiting by quantum tunneling.
14:15 - 14:45 - Singular Resonances in Moving Media Invited oral [Show abstract]
  • Zubin Jacob, University of Alberta, Canada
We report on the discovery of a fundamentally new resonance in moving media.
14:45 - 15:00 - Extremely Nonlinear RF-SQUID Metamaterial Oral [Show abstract]
  • Daimeng Zhang, University of Maryland, USA
  • Melissa Trepanier, University of Maryland, USA
  • Oleg Mukhanov, Hypres. Inc., USA
  • Steven Anlage, University of Maryland, USA
We present experimental results and numerical simulations on a superconducting metamaterial with remarkably nonlinear properties in the microwave range. The meta-atom is a RF-Superconducting Quantum Interference Device (RF-SQUID). This metamaterial has high tunability via DC magnetic field, temperature and applied RF power [1]. We observe a unique self-induced transparency of meta-atoms in a certain applied RF power range. Transparency is dependent on DC magnetic field, as well as power sweep directions. Hysteresis in transmission indicates the metamaterial is a nonlinear multi-state system.
13:15 - Mechanical Metamaterials I

Session chairperson(s): Johan Christensen

13:15 - 13:45 - Giant Optical Nonlinearity and Magnetoelectric Effect in Reconfigurable Plasmonic Metamaterials Invited oral [Show abstract]
  • Eric Plum, University of Southampton, United Kingdom
  • Joao Valente, University of Southampton, United Kingdom
  • Jun-Yu Ou, University of Southampton, United Kingdom
  • Kevin MacDonald, University of Southampton, United Kingdom
  • Nikolay Zheludev, University of Southampton, United Kingdom
We report reconfigurable metamaterial nanostructures controlled by electrical currents, magnetic fields and light. Our structures provide practically useful solutions for sub-megahertz and high-contrast magnetoelectric modulation of metamaterial optical properties and a cubic optical nonlinearity that is ten orders of magnitude greater than the reference nonlinearity of CS2.
13:45 - 14:15 - Structural tricks for enhanced metamaterial properties Invited oral [Show abstract]
  • Mikhail Lapine, The University of Sydney, Australia
This contribution presents an overview of novel structural approaches to the design of metamaterials, which enhance their performance by boosting emerging functionality. The two characteristic features of these approaches are hybrid assembly and finiteness effects, both providing unusual links between material properties and triggering unexpected effects. In a series of examples, the advantages of hybrid and mesoscopic designs will be demonstrated.
14:15 - 14:45 - Seismic Metamaterials: From Models of Plates to Structured Soils Invited oral [Show abstract]
  • Stephane Brule, Menard Company, France
  • Emmanuel Javelaud, Menard Company, France
  • Stefan Enoch, Institut Fresnel Marseille, France
  • Sebastien Guenneau, Institut Fresnel Marseille, France
We discuss some experiments on seismic metamaterials led near the French city of Grenoble in summer 2012. Numerical simulations based on an approximate plate model solved using Finite Elements suggest that the type of source (plane wave or point force) and the overall shape of the metamaterial matter.
14:45 - 15:00 - Elasto-Mechanical Cloak Made of Pentamode Metamaterials Fabricated by Galvo-Scanner Dip-In Direct Laser Writing Oral [Show abstract]
  • Tiemo Bückmann, Karlsruhe Institute of Technology (KIT), Institute of Applied Physics and DFG-Center for Functional Nanostructures (CFN), 76128 Karlsruhe, Germany
  • Michael Thiel, Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), 76128 Karlsruhe, and Nanoscribe GmbH, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
  • Muamer Kadic, Karlsruhe Institute of Technology (KIT), Institute of Applied Physics and DFG-Center for Functional Nanostructures (CFN), 76128 Karlsruhe, and Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), 76128 Karlsruhe, Germany
  • Robert Schittny, Karlsruhe Institute of Technology (KIT), Institute of Applied Physics and DFG-Center for Functional Nanostructures (CFN), 76128 Karlsruhe, Germany
  • Martin Wegener, Karlsruhe Institute of Technology (KIT), Institute of Applied Physics and DFG-Center for Functional Nanostructures (CFN), 76128 Karlsruhe, Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), 76128 Karlsruhe, Germany
Although cloaking has been achieved in many systems, one exception has been elasto-mechanics. Here, we design, fabricate, and characterize an approximate core-shell elastostatic cloak. By analyzing movies of the sample under deformation, we measure the displacement field under quasi-static conditions. Good cloaking performance of this “unfeelability cloak” is achieved.
15:00 - 15:30 - Coffee break (Wednesday afternoon)
15:30 - 17:00 - Oral sessions (Wednesday afternoon 2)
15:30 - Special Session 5: Metamaterial engineering: from microwaves to optics. In memory of M. Sorolla II

Organizer(s): Miguel Beruete

15:30 - 15:45 - Diffraction Inspired Unidirectional Transmission With Sign-Switchable Refraction And Deflection Oral [Show abstract]
  • Pablo Rodríguez-Ulibarri, Universidad Pública de Navarra, Spain
  • Miguel Beruete, Universidad Pública de Navarra, Spain
  • Miguel Navarro-Cia, Imperial College London, UK
  • Andriy E. Serebryannikov, Technische Universität Hamburg-Harburg, Germany
In this work, we present an asymmetric transmission structure composed of a dielectric grating laying over a stack of several perforated metallic plates that operate at the extraordinary transmission resonance. The combination of the diffraction modes generated by the grating and the intrinsic dispersion of the stacked hole arrays (SHA) structure leads to exotic propagation regimes which include unidirectional propagation with sign-switchable refraction and deflection. Several coupling scenarios will be analyzed and then numerical simulations will be presented as well as experimental results in the V band of millimeter waves
15:45 - 16:15 - Nanostructured Graphene Metasurface for Terahertz Cloaking of Elliptical Cylinders and Metallic Strips Invited oral [Show abstract]
  • Alexander B. Yakovlev, University of Mississippi, USA
  • Hossein M. Bernety, University of Mississippi, USA
Here, we propose the analytical framework for electromagnetic cloaking of dielectric and metallic elliptical cylinders with a nanostructured graphene metasurface at low-terahertz frequencies. The analysis is based on the solution of the scattering problem in terms of elliptical waves given by the radial and angular Mathieu functions with the sheet impedance boundary conditions at the graphene metasurface, having closed-form expression for the surface impedance. The scattering cancellation occurs for all the incident angles and all the scattering angles with a specific value of surface reactance of graphene nanopatches.
16:15 - 16:30 - Terahertz Multiband Metamaterial Absorber Based on Anisotropic Meta-molecules: Potential Application in Stealth Technologies No show [Show abstract]
  • Riad Yahiaoui, XLIM, France
  • Jean Paul Guillet, LOMA, France
  • Frédérick de Miollis, LOMA, France
  • Patrick Mounaix, LOMA, France
Standard optical lithography relying on clean room and microelectronic facilities is used to fabricate thin-flexible metamaterial absorber, designed to operate at sub-millimeter wavelengths over the 0.1-1 THz frequency band. Large terahertz absorption has been demonstrated numerically and through experimental measurements with a maximum level of about 80%. We put emphasis in this present work on the use of single-sized “meta-molecules” to achieve multiple absorption peaks. The use of a flexible dielectric spacer makes it very promising for stealth technology applications.
16:30 - 17:00 - Recent Advances in Modeling Metamaterial Transmission Lines Based on Pairs of Split Ring Resonators (SRRs): Coupling between the SRRs Forming the Pair Invited oral [Show abstract]
  • Lijuan Su, CIMITEC, Dep. Enginyeria Electrònica, UAB, Spain
  • Jordi Naqui, CIMITEC, Dep. Enginyeria Electrònica, UAB, Spain
  • Javier Mata, CIMITEC, Dep. Enginyeria Electrònica, UAB, Spain
  • Ferran Martín, CIMITEC, Dep. Enginyeria Electrònica, UAB, Spain
The paper presents the recent advances in the modeling of metamaterial transmission lines loaded with split ring resonators (SRRs). The focus here is to analyze the effects of coupling between the SRRs forming the pair in each unit cell. Thus, a model that considers magnetic coupling between the line and the rings, as well as magnetic coupling between the pair of rings, is presented and analyzed. The model is validated through preliminary results inferred from full wave electromagnetic simulation.
15:30 - Exotic effects

Session chairperson(s): Gennady Shvets

15:30 - 15:45 - Recent Progress in Metamaterials That Perform Mathematical Operations Oral [Show abstract]
  • Cristian Della Giovampaola, University of Pennsylvania, USA
  • Brian Edwards, University of Pennsylvania, USA
  • Alexandre Silva, University of Pennsylvania, USA
  • Francesco Monticone, University of Texas at Austin, USA
  • Giuseppe Castaldi, University of Sannio, Italy
  • Vincenzo Galdi, University of Sannio, Italy
  • Andrea Alu, University of Texas at Austin, USA
  • Nader Engheta, University of Pennsylvania, USA
Here, we report recent progress on our ongoing efforts in exploring metastructures that are designed to perform mathematical operations, such as spatial differentiation and convolution, as the impinging wave interacts with them. We discuss several design approaches and possible paths towards proof-of-concept experimentations.
15:45 - 16:00 - Spatial sorting and routing of electromagnetic waves based on polarization control Oral [Show abstract]
  • Jorge Carbonell, Universidad Politécnica de Valencia, Spain
  • Francisco José Rodriguez-Fortuño, Universidad Politécnica de Valencia, Spain
  • Ana Díaz-Rubio, Universidad Politécnica de Valencia, Spain
  • Alejandro Martínez, Universidad Politécnica de Valencia, Spain
  • Francisco Cervera, Universidad Politécnica de Valencia, Spain
  • José Sánchez-Dehesa, Universidad Politécnica de Valencia, Spain
The polarization of a plane wave in free space is used to control the excitation and the directionality of a guided electromagnetic wave. Experiments are conducted using a two-dimensional waveguide made of two parallel aluminum plates which is externally excited. The upper plate, which has a linear array of holes, is externally illuminated by a polarized wave whose incident wavevector is contained within a plane perpendicular to the waveguide and containing the linear array. Surprisingly, measurements show that the propagation inside the waveguide is highly asymmetrical, and is controlled by the polarization of the incoming wave. This extraordinary phenomenon is explained in terms of a simple model involving a set of equivalent dipoles excited at the hole positions. This is a powerful tool to sort different polarizations of a free space beam to different propagation directions of guided electromagnetic waves.
16:00 - 16:15 - Near-Field Imaging with Subwavelength Resolution by a Plasmonic Moir´e Magnifier Oral [Show abstract]
  • Stefan Fasold, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Germany
  • Christoph Menzel, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Germany
  • Christoph Etrich, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Germany
  • Thomas Paul, Fraunhofer Institute for Applied Optics and Precision Engineering, Germany
  • Ernst-Bernhard Kley, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Germany
  • Carsten Rockstuhl, Institute of Theoretical Solid State Physics, Institute of Nanotechnology, Karlsruhe Institute of Technology, Germany
  • Andreas Tünnermann, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Fraunhofer Institute for Applied Optics and Precision Engineering, Germany
  • Thomas Pertsch, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-University Jena, Germany
We numerically and experimentally investigate a new plasmonic Moir ́e magnifier. It enables us to image near-fields of arrays of nanostructures with a subwavelength resolution at nearly arbitrary wavelengths in the far-field.
16:15 - 16:30 - Multi-Periodicity Induces Prominent Optical Phenomena in Plasmonic Multilayers Oral [Show abstract]
  • Alexey Orlov, ITMO University, Russia
  • Anastasea Krylova, ITMO University, Russia
  • Sergei Zhukovsky, DTU Fotonik, Denmark
  • Viktoriia Babicheva, DTU Fotonik, Denmark
  • Pavel Belov, ITMO University, Russia
We introduce multi-periodicity in plasmonic multilayers and develop a general theory for the description of their eigenwaves. For example, we show the formation of additional photonic bands, multi-refringence of p-polarized light, Dirac and mixed states.
16:30 - 16:45 - Photochromic Switching of Fano Resonances in Metallic Photonic Crystal Slabs Oral [Show abstract]
  • Stefan Linden, University of Bonn, Germany
We investigate metallic photonic crystals slabs composed of periodic gold nanowire arrays embedded in a photochromic waveguide. Coupling of the localized plasmon mode of the gold nanowires and the delocalized waveguide mode results in pronounced Fano resonances. By switching the photochromic waveguide from the transparent to the absorbing state, the Fano dips in the extinction spectra can be suppressed strongly.
16:45 - 17:00 - Coherence in rf SQUID Metamaterials Oral [Show abstract]
  • Melissa Trepanier, University of Maryland, USA
  • Daimeng Zhang, University of Maryland, USA
  • Oleg Mukhanov, Hypres, USA
  • Steven Anlage, University of Maryland, USA
Metamaterials made up of radio frequency (rf) Superconducting Quantum Interference Devices (SQUIDs) can display strongly nonlinear behavior over a range of parameters, including dc flux and rf power. The collective response of coupled arrays of rf SQUIDs as a function of dc magnetic field bias is observed to be surprisingly coherent. Here we examine the reasons for this coherence and quantify the limits for the collective behavior.
15:30 - Acoustic and thermal metamaterials

Session chairperson(s): Andrew Norris

15:30 - 15:45 - Elastic Nonlinearities and Wave Distortion in Heterogeneous Materials Containing Constrained Negative Stiffness Inclusions Oral [Show abstract]
  • Stephanie G. Konarski, The University of Texas at Austin, Applied Research Laboratories, USA
  • Mark F. Hamilton, The University of Texas at Austin, Applied Research Laboratories, USA
  • Michael R. Haberman, The University of Texas at Austin, Applied Research Laboratories, USA
This paper demonstrates the enhancement of acoustic nonlinearities in a heterogeneous elastic material consisting of negative stiffness metamaterial structures embedded in an isotropic linear elastic matrix. Standard formulations of nonlinear elasticity are employed to determine the effective isotropic nonlinear bulk modulus of the composite. Acoustic parameters of nonlinearity, which characterize the distortion of a propagating acoustic wave through this heterogeneous material, are determined by relating the bulk modulus to the nonlinear equation of state. The effects of varying the values of the inclusion and matrix parameters are presented and discussed.
15:45 - 16:00 - Realization of Acoustic Superlens Using a Metamaterial Slab with Negative Density Oral [Show abstract]
  • Jong Jin Park, Yonsei University, Korea (South)
  • Kong-Ju-Bock Lee, Ewha Womans University, Korea (South)
  • Sam H. Lee, Yonsei University, Korea(South)
The acoustic evanescent waves at the interface between air and the negative-density metamaterial slab are theoretically known to be amplified through the slab. We report a fabrication of acoustic superlens firstly using membrane-based two-dimensional metamaterial which exhibits the negative density and has remarkably small dissipation. The fabricated superlens is thick as much as 60% of the wavelength of the incident sound wave. We experimentally demonstrate a sharp focusing with spot size of one seventeenth of the wavelength and a fine resolution of two sources separated by one sixth of the wavelength with FWHM of one eighteenth of the wavelength.
16:00 - 16:15 - Slow Sound Propagation In Acoustic Metamaterials Oral [Show abstract]
  • Georgios Theocharis, Laboratoire d'Acoustique de l'Université du Maine UMR-CNRS 6613, France
We investigate the sound propagation in a prototypical acoustic metamaterial, an air-filled tube periodically loaded with Helmholtz resonators (HRs). By tuning the Helmholtz with the Bragg resonance, we study the efficiency of slow sound propagation in the presence of the intrinsic viscothermal losses of the system. While in the lossless case the overlapping of the resonances results in slow sound induced transparency of a narrow frequency band surrounded by a strong and broadband gap, the inclusion of the unavoidable losses imposes limits to the slowdown factor and the maximum transmission. Experiments and theory have been used for the characterization of acoustic wave propagation. A trade-off among the relevant parameters (delay time, maximum transmission, bandwidth) as a function of the tuning between Bragg and Helmholtz resonance frequency is also presented
16:15 - 16:30 - Acoustic Leaky-Wave Antenna Oral [Show abstract]
  • Seyyed Hussein Seyyed Esfahlani, EPFL, Switzerland
  • Sami Karkar, EPFL, Switzerland
  • Hervé Lissek, EPFL, Switzerland
Acoustic CRLH-TL has paved the way to some applications among which “Acoustic Leaky-Wave Antenna”. In this article, following our path on maturing the Acoustic Leaky-Wave antenna we propose an optimized design which unlike our previous structure is only radiating in the upper plane.
16:30 - 16:45 - Thermal Metamaterials for Invisibility and Camouflage Oral [Show abstract]
  • Tiancheng Han, School of Physical Science and Technology, Southwest University, China
Here we report our recently two works about thermal cloak and thermal illusion based on simulation and experimental validation. Both of them are made of bulk isotropic materials, and experimentally confirmed in both time-dependent and temperature-dependent cases, demonstrating excellent thermotics performance.
16:45 - 17:00 - Engineering vacuum and thermal fluctuations with hyperbolic metamaterials Oral [Show abstract]
  • Yu Guo, University of Alberta, Canada
  • Zubin Jacob, University of Alberta, Canada
In 1987, the search for a medium that expels vacuum fluctuations in a prescribed bandwidth and rigorously forbids spontaneous emission led to the concept of the photonic crystal. Here, we argue that the search for the opposite effect: enhancing vacuum and thermal fluctuations inside a medium within a prescribed bandwidth can be accomplished by hyperbolic metamaterials. We will present the fluctuational electrodynamics of such media with hyperbolic dispersion and show that they exhibit broadband super-planckian thermal emission in the near-field. We will also present the quantum nanophotonics of such media where the enhanced vacuum fluctuations within the medium leads to a broadband Purcell effect.
28 August 2014 / Start time: 9 h 0 min
09:00 - 10:15 - Oral session (Thursday morning 1)
09:00 - Special Session 4: Acoustic, mechanical and elastic metamaterials I

Organizer(s): Michael Haberman

09:00 - 09:30 - Tunable acoustic metamaterial elements, neutral inclusions, transparency and causality Keynote [Show abstract]
  • Andrew Norris, Rutgers University, Dept. Mechanical & Aerospace Engng, USA
  • Alexey Titovich, Rutgers University, Dept. Mechanical & Aerospace Engng, USA
Acoustic metamaterial elements based on cylindrical elastic shells with an internal mass supported by axisymmetric stiffeners are described. The shell's effective acoustic properties are tuned by varying the mass and stiffness. The elements can be impedance and index matched to water, resulting in near-zero scattering cross section over a broad range of low frequencies. The physical constraints necessary for low frequency transparency imply that the scattering is non-causal which means there must be scattering at high frequency.
09:30 - 10:00 - Recent Results on Hyperbolic Materials and Sonic Crystals Invited oral [Show abstract]
  • Jose Sanchez-Dehesa, Universitat Politecnica de Valencia, Spain
  • Victor Manuel Garcia-Chocano, Universitat Politecnica de Valencia, Spain
  • Weiwei Kan, Nanjing University, China
  • Matthew D. Guild, Universitat Politecnica de Valencia, Spain
This work reports on two topics of increasing interest in acoustic metamaterials. On the one hand, we will report on the experimental demonstration of negative refraction and energy funneling by hyperbolic materials consisting of arrays of rigid plates with periodic perforations. On the other hand, we will report on the absorbing properties of sonic crystals made of periodic distributions of rigid cylinders in air. By enabling higher filling fractions, it will be seen that sonic crystals can provide a large enhancement in the loss factor of the effective properties.
10:00 - 10:15 - Transformational acoustic metamaterials based on pressure gradients Oral [Show abstract]
  • Carlos García-Meca, Univsersitat Poltècnica de València, Spain
  • Sante Carloni, Institute of Theoretical Physics, MFF, Charles University, Czech Republic
  • Carlos Barceló, Instituto de Astrofísica de Anadalucía (CSIC), Spain
  • Gil Jannes, Universidad Carlos III de Madrid, Spain
  • José Sánchez-Dehesa, Universitat Poltècnica de València, Spain
  • Alejandro Martínez, Universitat Poltècnica de València, Spain
We apply a homogenization process to the acoustic velocity potential wave equation. A careful analysis unveils the difference between metamaterials designed via potential- and pressure-based approaches. Our findings show the possibilities of metafluids based on pressure gradients both for building transformation media and for achieving supersonic propagation speeds.
09:00 - Metasurfaces I

Session chairperson(s): Andrei Lavrinenko

09:00 - 09:30 - Metasurfaces for MouldingWaves: Synthesis and Implementation Roads Invited oral [Show abstract]
  • Christophe Caloz, École Polytechnique de Montréal, Canada
  • Mohamed Ahmed Salem, École Polytechnique de Montréal, Canada
  • Karim Achouri, École Polytechnique de Montréal, Canada
Novel perspectives for the synthesis and implementation of metasurfaces are proposed. Two synthesis techniques – the first general and systematic ones reported to date – are presented and compared: a spectral-momentum technique and a spatial-susceptibility technique. For the implementation, recent innovations and discoveries pertaining to both scatterer arrays and traveling-wave leaky-wave metasurfaces are described and compared.
09:30 - 10:00 - Controlling Light Propagation in Optical Waveguides Using One Dimensional Phased Antenna Arrays Invited oral [Show abstract]
  • Nanfang Yu, Columbia University, USA
  • Myoung-Hwan Kim, Columbia University, USA
  • Zhaoyi Li, Columbia University, USA
We demonstrated using full-wave simulations that phased array antennas patterned on optical waveguides can strongly affect mode coupling and propagation in the waveguides. We designed broadband small-footprint integrated photonic devices based on the concept.
10:00 - 10:15 - Metamirrors Oral [Show abstract]
  • Viktar Asadchy, School of Electrical Engineering, Aalto University, Finland, Finland
  • Younes Ra'di, School of Electrical Engineering, Aalto University, Finland, Finland
  • Sergei Tretyakov, School of Electrical Engineering, Aalto University, Finland, Finland
We introduce the concept of non-uniform metamirrors (full-reflection metasurfaces) providing full control of reflected wave fronts independently from the two sides of the mirror. Metamirror is a single planar array of electrically small bianisotropic inclusions. The electric and magnetic responses of the inclusions enable creating controlled gradient of phase discontinuities over the surface. Furthermore, presence of electromagnetic coupling in the inclusions allows independent control of reflection phase from the opposite sides of the mirror. Based on the proposed concept, we design and simulate metamirrors for highly efficient light bending and near-diffraction-limit focusing with a sub-wavelength focal distance.
09:00 - Active, non-Foster and PT-symmetry metamaterials

Session chairperson(s): Richard Ziolkowski

09:00 - 09:30 - Is Stable Dispersionless Non-Foster DNG Metamaterial Indeed Impossible? Invited oral [Show abstract]
  • Silvio Hrabar, University of Zagreb, Croatia
Recently, various stable broadband ENZ/MNZ non-Foster metamaterials have been reported. Unfortunately, the realization of DNG metamaterial appears not to be feasible due to inherent instability. Here, it is shown that this constraint can be removed by the inclusion of a negative resistance.
09:30 - 09:45 - Parity-Time Acoustic Metamaterials and Unidirectional Invisible Sensors Oral [Show abstract]
  • Romain Fleury, The University of Texas at Austin, USA
  • Andrea Alù, The University of Texas at Austin, USA
We theoretically and experimentally investigate the unique scattering properties of parity-time acoustic systems. We observe acoustic invisibility of airborne sound at audible frequencies in a parity-time symmetric meta-molecule made of perfectly balanced gain and loss subunits. This is achieved in a waveguide configuration using electro-acoustic resonators loaded with non-Foster elements, which are tailored to induce invisibility at the design frequency. This unidirectional reflectionless system is fully stable and self-sensing, allowing for robust implementation of parity-time acoustic metamaterials for loss compensation, non-invasive sensing and advanced acoustic signal manipulation.
09:45 - 10:00 - Bound And Leaky Modes In PT-Symmetric Epsilon-Near-Zero Metamaterial Slabs Oral [Show abstract]
  • Silvio Savoia, University of Sannio, Department of Engineering, Italy
  • Vincenzo Galdi, University of Sannio, Department of Engineering, Italy
We show that a judicious combination of balanced gain and loss, inspired by parity-time symmetry concept, can be exploited in epsilon-near-zero metamaterials to support exponentially-localized bound modes that propagate without attenuation. We study the dispersion relationship of these modes for moderate levels of gain/loss, and their eventual transition to leaky modes below a gain/loss threshold. These waveguiding/radiation mechanisms may open up intriguing venues for novel nanophotonics platforms.
10:00 - 10:15 - PT-symmetry vs. dispersion of dielectric permittivity Oral [Show abstract]
  • Alexander Zyablovsky, All-Russia Research Institute of Automatics, Moscow, Russia
  • Alexey Vinogradov, Institute for Theoretical and Applied Electromagnetics RAS, Moscow, Russia
  • Alexander Pukhov, Institute for Theoretical and Applied Electromagnetics RAS, Moscow, Russia
  • Alexander Dorofeenko, Institute for Theoretical and Applied Electromagnetics RAS, Moscow, Russia
  • Alexander Lisyansky, Department of Physics, Queens College of the City University of New York, USA
We examine properties of symmetric optical systems. We demonstrate that due to frequency dispersion of the dielectric permittivity, an optical system can have PT-symmetry at isolated frequency points only. As a result, the ideal symmetry-breaking transition cannot be observed by simply varying the frequency.
10:15 - 10:45 - Coffee break (Thursday morning)
10:45 - 12:00 - Oral session (Thursday morning 2)
10:45 - Special Session 4: Acoustic, mechanical and elastic metamaterials II

Organizer(s): Michael Haberman

10:45 - 11:15 - Extraordinary absorption and amplification of sound Withdrawn [Show abstract]
  • Johan Christensen, -, Denmark
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11:15 - 11:45 - Soft Acoustic Metamaterials by Design Invited oral [Show abstract]
  • Thomas Brunet, University of Bordeaux - CNRS, UMR 5295, I2M, France
  • Jérôme Dubois, University of Bordeaux - CNRS, UMR 5295, I2M, France
  • Benoit Mascaro, University of Bordeaux - CNRS, UMR 5295, I2M, France
  • Simon Raffy, University of Bordeaux - CNRS Solvay, UMR 5258, LOF, France
  • Jacques Leng, University of Bordeaux - CNRS Solvay, UMR 5258, LOF, France
  • Aurore Merlin, University of Bordeaux, CNRS, UPR 8641, CRPP, France
  • Olivier Mondain-Monval, University of Bordeaux, CNRS, UPR 8641, CRPP, France
  • Olivier Poncelet, University of Bordeaux - CNRS, UMR 5295, I2M, France
  • Christophe Aristegui, University of Bordeaux - CNRS, UMR 5295, I2M, France
The link between the constitutive parameters of dissipative media supporting (un)usual wave motions and the plane wave motion exhibition, has been established in order to propose a tool for designing functional materials able to control acoustic wave propagation. In this context, we propose a new route to produce a large amount of Mie resonators possessing very low sound speed (100 m s-1) by means of soft matter techniques coupled with microfluidics. Their random distribution in a water-based gel matrix (with a much higher sound speed, 1500 m s-1) should confer specific effective acoustic properties on these “ultra-slow” Mie resonator suspensions, such as negative acoustic refractive index.
11:45 - 12:00 - Unified Approach to Design Linear and Nonlinear Acoustic Metamaterials Oral [Show abstract]
  • Bogdan-Ioan Popa, Duke University, USA
  • Steven Cummer, Duke University, USA
We review a new approach to design active acoustic metematerials that results in artificial media covering a large range of linear acoustic responses. We show how this method can be extended to obtain metamaterials having highly non-linear responses. We illustrate it experimentally by implementing a medium that produces second harmonics of higher intensity than the fundamental. This is an important property that can be leveraged in many non-linear applications, including the implementation of highly sub-wavelength unidirectional media capable of breaking the time-reversal symmetry.
10:45 - Metasurfaces II

Session chairperson(s): Nanfang Yu

10:45 - 11:15 - Few-Layered Planar Terahertz Metamaterials for Antireflection, Perfect Absorption, Polarization Control, and Wavefront Shaping Invited oral [Show abstract]
  • Nathaniel Grady, Los Alamos National Laboratory, USA
  • Li Huang, Harbin Institute of Technology, China
  • Jane Heyes, Los Alamos National Laboratory, USA
  • Dabakar Chowdhury, Los Alamos National Laboratory, USA
  • Abul Azad, Los Alamos National Laboratory, USA
  • Antoinette Taylor, Los Alamos National Laboratory, USA
  • Hou-Tong Chen, Los Alamos National Laboratory, USA
Bulk metamaterials often suffer from high losses and fabrication challenges, while single layered metasurfaces lack the required strong interactions with the incident electromagnetic waves. Here we present thin-film-like terahertz metamaterials consisting of only a few layers of planar subwavelength metallic structures for a host of functionalities including antireflection, perfect absorption, linear polarization conversion, and arbitrary wavefront shaping.
11:15 - 11:45 - Fast Approach to the Design of Planar Devices and Antennas Based on Elliptical Patch Metasurfaces Invited oral [Show abstract]
  • Enrica Martini, University of Siena, Italy
  • Mario jr. Mencagli, University of Siena, Italy
  • Francesco Caminita, University of Siena, Italy
  • Marco Faenzi, University of Siena, Italy
  • Stefano Maci, University of Siena, Italy
This paper presents an effective approach for the analysis of anisotropic metasurfaces (MTSs) consisting of elliptical patches printed over a grounded slab. This procedure is used in the design of planar antennas and transformation optics devices based on modulated MTS.
11:45 - 12:00 - Polarization Phenomena in Periodic Metasurfaces at Oblique Incidence Oral [Show abstract]
  • Sergey Kruk, Australian National University, Australia
  • Alexander Poddubny, Ioffe Institute and ITMO University, Russia
  • Christian Helgert, Friedrich-Schiller-Universität Jena, Germany
  • Manuel Decker, Australian National University, Australia
  • David Powell, Australian National University, Australia
  • Thomas Pertsch, Friedrich-Schiller-Universität Jena, Germany
  • Dragomir Neshev, Australian National University, Australia
  • Yuri Kivshar, Australian National University, Australia
We study experimentally and theoretically oblique incidence polarization phenomena for periodic metasurfaces of different symmetries. We show that the strength of the optical activity, circular dichroism and asymmetric transmission is dependent on the rotational symmetry of the metasurface lattice. We verify the predictions of the analytical model by the experimental study of optical metasurfaces with 4-fold, 6-fold and 5-fold rotational symmetry and demonstrate an excellent agreement.
10:45 - Homogenization

Session chairperson(s): Filippo Capolino

10:45 - 11:00 - Permittivity And Permeability For Floquet-Bloch Space Harmonics In Infinite 1D Magneto-Dielectric Periodic Structures Oral [Show abstract]
  • Olav Breinbjerg, Technical University of Denmark, Denmark
  • Arthur D. Yaghjian, ARCON Corporation, USA
For an infinite 1D periodic structure with unit cells consisting of two planar slabs of magneto-dielectric materials, the electric field – as well as magnetic field, electric flux density, magnetic flux density, polarization, and magnetization – can be expressed as infinite series of Floquet-Bloch space harmonics. We discuss how space harmonic permittivity and permeability can be expressed in seemingly different though equivalent forms, and we investigate these parameters of the zeroeth order space harmonic for a particular 1D periodic structure that is based on a previously reported 3D periodic structure with unit cells containing a magneto-dielectric sphere.
11:00 - 11:15 - Retrieving Constitutive Parameters of Plasmonic Multilayers Oral [Show abstract]
  • Alexey Orlov, ITMO University, Russia
  • Elizaveta Yankovskaya, ITMO University, Russia
  • Sergei Zhukovsky, DTU Fotonik, Denmark
  • Viktoriia Babicheva, DTU Fotonik, Denmark
  • Pavel Belov, ITMO University, Russia
We show how to correctly retrieve constitutive parameters of plasmonic multilayers in the optical domain. We offer a way to overcome issues of the commonly used Nicolson-Ross-Weir extraction procedure which direct application leads to spurious zero-permittivity points and false permeability resonances in the case of total reflection from the slab.
11:15 - 11:30 - Non-local Susceptibility for a Bounded Homogenized Wire Medium in the Spatial Domain Oral [Show abstract]
  • George W. Hanson, University of Wisconsin-Milwaukee, USA
  • Mario G. Silveirinha, Universidade de Coimbra, Portugal
  • Paolo Burghignoli, University of Rome ‘Sapienza’, Italy
  • Alexander B. Yakovlev, University of Mississippi, USA
Here, we present different formulations for wave interaction problems of bounded homogenized wire media in the spatial domain. We demonstrate that two previous methods based on the wave expansion and transport equation are equivalent to each other, and to a charge carrier model involving particle reflection at the boundary. The role of a virtual interface is discussed, and it is found to be analogous to that for natural excitonic materials. An important observation is that the non-local susceptibility for a non-translationally invariant homogenized wire medium is represented by a Green’s function in the spatial domain subject to boundary conditions at the material boundaries.
11:30 - 11:45 - Roughly Impedance-Matched Scatterers Constructed With Magnetodielectric Cells Oral [Show abstract]
  • Olivier VACUS, CEA, France
In this work we study a generalization of the monostatic theorem of Weston applied to heterogeneous magneto-dielectric scatterers. The whole object of interest is divided into a set of small cubical unit cells that are alternatively either dielectric or magnetic. Numerical computations are presented to compare the RCS levels of the original perfectly and the lego-based roughly impedance-matched scatterers. Results presented in 2013 have been completed by computations on new shapes and over a broader range of frequencies. Criteria are proposed to assess the Weston-like behavior of heterogeneous scatterers.
11:45 - 12:00 - Floquet-Bloch vs. Nicolson-Ross-Weir Extraction for Magneto-Dielectric Bragg Stacks Oral [Show abstract]
  • Niels Clausen, DTU Elektro, Denmark
  • Samel Arslanagic, DTU Elektro, Denmark
  • Olav Breinbjerg, DTU Elektro, Denmark
We extract and compare the permittivity and permeability from a dielectric and a magneto-dielectric Bragg stack with the Floquet-Bloch (FB) method and the Nicolson-Ross-Weir (NRW) method. While the extracted wavenumbers are identical, the wave impedances are different. Moreover, the NRW method yields magnetic probabilities for the dielectric Bragg stack, while the FB method gives the expected vacuum permeability, also in the bandgab.
12:00 - 13:15 - Lunch break (Thursday)
13:15 - 15:00 - Oral session (Thursday afternoon 1)
13:15 - Special Session 6: Quantum effects in metamaterials I

Organizer(s): Mario Silveirinha

13:15 - 13:45 - Emulating AMO and Condensed Matter Phenomena with Metamaterials: From Fano Resonances to Topological Insulators Keynote [Show abstract]
  • Gennady Shvets, UT-Austin, USA
The flexible design of metamaterials makes them an excellent platform for emulating a variety of quantum mechanical phenomena that exist on the level of individual atoms/molecules and in collectively interacting systems such as condensed matter. I will describe three such model systems emulated by metamaterials and metasurfaces: double-continuum Fano interferences in atoms, near-neighbor versus long-range interactions in condensed matter, and topological insulation in electronic structures. Experimental and theoretical results will be presented, and the prospects for utilizing metamaterials to achieve new functionalities in laser physics, nonlinear optics, and sub-wavelength electromagnetics will be discussed
13:45 - 14:15 - Negative Dynamic Friction and Related Instabilities in Layers of Moving Media Invited oral [Show abstract]
  • Stanislav Maslovski, Instituto de Telecomunicações, Universidade de Coimbra, Portugal
Recent achievements in the theory of quantum friction are outlined, with an emphasis on related electromagnetic instabilities in such systems. In particular, negative dynamic friction regime and instabilities in two-dimensional electron gases and graphene layers are discussed.
14:15 - 14:45 - Quantum optical properties of hybrid plasmonic nanostructures Invited oral [Show abstract]
  • Carsten Rockstuhl, Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, Germany
  • Robert Filter, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universit\ät Jena, Germany
  • Karolina Slowik, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universit\ät Jena, Germany
  • Jakob Straubel, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universit\ät Jena, Germany
  • Jiamin Houu, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universit\ät Jena, Germany
  • Christoph Bösel, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universit\ät Jena, Germany
  • Giuseppe Toscano, Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, Germany
If optical nanoantennas are coupled to quantum emitters, they can modify their properties in the weak coupling regime but eventually also a strong coupling regime can be reached. We detail strategies to reach the strong coupling regime and discuss novel applications already in reach in the weak coupling regime.
14:45 - 15:00 - Quantum Optical Effective-Medium Theory Of Layered Metamaterials Oral [Show abstract]
  • Ehsan Amooghorban, Shahrekord University, Iran
  • N. Asger Mortensen, Technical University of Denmark, Denmark
  • Martijn Wubs, Technical University of Denmark, Denmark
Quantum optics of metamaterials starts with the question whether the same effective-medium theories apply as in classical optics. We show that the answer is No. In active plasmonics, an additional effective-medium parameter is indispensable. We compute it for quantum light propagation in arbitrary directions in layered metamaterials.
Media link(s):

See this Physical Review Letter

13:15 - Metasurfaces III

Session chairperson(s): Sergei Zhukovsky

13:15 - 13:45 - Array-Induced Fano Resonances Make High Quality Factors Possible in Plasmonic Systems Invited oral [Show abstract]
  • Caner Guclu, University of California, Irvine, USA
  • Salvatore Campione, University of California, Irvine, USA
  • Filippo Capolino, University of California, Irvine, USA
<p> We introduce the concept of array-induced Fano resonances in two-dimensional periodic arrays (metasurfaces) of plasmonic nanoparticle clusters as a mean to generate very narrow resonances despite the presence of metallic losses. We find that array-induced Fano resonances have the potential to be narrower than isolated-cluster-induced ones, and may lead to even larger field enhancements. We provide two representative examples: (i) a metasurface made of circular nanoclusters; (ii) a metasurface made of linear trimers. However, in principle the concept here introduced can be empirically extended to any cluster size and configuration. Application of array-induced Fano resonances include the improvement of sensor devices, for example</p>
13:45 - 14:15 - An Overview of the Generalized Dipole Moment Based Approach for Modelling of Nanoparticles Invited oral [Show abstract]
  • Majid Naeem, Queen Mary University of London, United Kingdom
We present an overview of the full wave dipole moment based approach to model a metafilm. This rigorous approach, in hybridization with the Characteristic Basis Function Method (CBFM), yields accurate yet computationally efficient solutions to scattering problems involving large arrays of meta-atoms over a wide frequency band.
14:15 - 14:30 - Manipulation of Quantum Dots Emission Spectra by All-dielectric Metasurfaces Oral [Show abstract]
  • Dragomir Neshev, Australian National University, Australia
  • Isabelle Staude, Australian National University, Australia
  • Nche Fofang, Sandia National Laboratory, USA
  • Sheng Liu, Sandia National Laboratory, USA
  • Jason Dominguez, Sandia National Laboratory, USA
  • Manuel Decker, Australian National University, Australia
  • Andrey Miroshnichenko, Australian National University, Australia
  • Vyacheslav Khardikov, National Academy of Sciences of Ukraine, Ukraine
  • Ting Luk, Sandia National Laboratory, USA
  • Igal Brener, Sandia National Laboratory, USA
  • Yuri Kivshar, Australian National University, Australia
Silicon nanodisks support both electric and magnetic resonances, which can be tuned independently via their geometry. We utilize these engineered resonances and demonstrate dielectric metasurfaces for efficient shaping of the emission spectra of quantum dots.
14:30 - 14:45 - Substrate-Induced Bianisotropy in Metamaterials: A Revision Oral [Show abstract]
  • Mohammad Albooyeh, RAD department, School of Electrical Engineering, Aalto university, Finland
  • Rasoul Alaee, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Carsten Rockstuhl, Karlsruhe Institute of Technology, Institute of Theoretical Solid State Physics, Germany
  • Constantin Simovski, RAD department, School of Electrical Engineering, Aalto university, Finland
It was generally accepted though never theoretically proven that substrating an electrically resonant metasurface results in a bianisotropic response. We, however, prove that this claim is not fully correct. We theoretically demonstrate that an electrically resonant substrated metasurface certainly provides an asymmetric reflection while it does not necessarily create a bianisotropic polarization response. We show, through some illustrative examples, that the substrate-induced bianisotropy may happen under certain conditions.
14:45 - 15:00 - Planar Metamaterial as a Wavevector Selective Surface Oral [Show abstract]
  • Vassili Fedotov, University of Southampton, United Kingdom
  • Jan Wallauer, University of Freiburg, Germany
  • Markus Walther, University of Freiburg, Germany
  • Nikitas Papasimakis, University of Southampton, United Kingdom
  • Nikolay Zheludev, University of Southampton, United Kingdom
Frequency selective surfaces are very well known and have been investigated in detail. Here we introduce the concept of a wavevector selective surface and demonstrate it experimentally. The wavevector filtering results in arbitrary-shaped wavefronts becoming planar as they traverse a planar coherent metamaterial in the absence of any spatial phase modulation.
13:15 - Nanoantennas

Session chairperson(s): Andrea Falco

13:15 - 13:45 - Hybrid nanoantennas for nonlinear nanophotonics, single plasmon interference, and organic polariton condensates Invited oral [Show abstract]
  • Stefan Maier, Imperial College London, United Kingdom
We will present nonlinear experiments with hybrid optical nanoantennas, where a nanoscale nonlinear element is placed into the gap of a plasmonic dimer antenna. Such antennas are highly efficient nonlinear sources of radiation, and additionally the strength of third harmonic generation allows for probing of the plasmonic field enhancement. The second part of the talk will present direct evidence for the bosonic nature of surface plasmon polaritions via a Hong-Ou-Mandel interferometric study of quantum interference. The third part will present room temperature polariton lasing in a soft matter microcavity system.
13:45 - 14:15 - Huygens Source Nanoparticle Lasers and Their Applications Invited oral [Show abstract]
  • Inigo Liberal, Universidad Pública de Navarra, Spain
  • Ramon Gonzalo, Universidad Pública de Navarra, Spain
  • Inigo Ederra, Universidad Pública de Navarra, Spain
  • Richard Ziolkowski, University of Arizona, USA
An induction theorem-inspired approach empowers the design of a multi-layered (Si-Ag-Si) gain impregnated nanoparticle that enables the amplified and balanced excitation of its electric and magnetic dipole modes and, hence, realizes a Huygens source nanoparticle laser.
14:15 - 14:30 - Doubling the efficiency of third harmonic generation by positioning ITO and LiNbO3 nanocrystals into the hot-spot of plasmonic gap-antennas Oral [Show abstract]
  • Bernd Metzger, University of Stuttgart, Germany
  • Mario Hentschel, University of Stuttgart, Germany
  • Thorsten Schumacher, University of Stuttgart, Germany
  • Markus Lippitz, University of Stuttgart, Germany
  • Bastian Knabe, University of Freiburg, Germany
  • Karsten Buse, University of Freiburg, Germany
  • Xingchen Ye, University of Pennsylvania, USA
  • Chris B. Murray, University of Pennsylvania, USA
  • Harald Giessen, University of Stuttgart, Germany
We incorporate dielectric indium tin oxide and lithium niobate nanocrystals into the hot-spot of gold nanogap-antennas and perform third harmonic spectroscopy on these hybrid nanostructure arrays. The combined system shows a twofold increase of the radiated third harmonic intensity. In order to identify the origin of the enhanced nonlinear response we perform finite element simulations of the nanostructures, which are in excellent agreement with our measurements. We find that the third harmonic signal enhancement is mainly related to changes in the linear optical properties of the plasmonic antenna resonances, when the ITO nanocrystals are incorporated. Furthermore, the dominant source of the third harmonic is found to be located in the gold volume of the plasmonic antennas and not in the nonlinear material that was placed inside the gap on the antennas.
14:30 - 14:45 - Simulation, Fabrication And Near-Field Characterization Of Nanoantenna Couplers For Telecom Range Oral [Show abstract]
  • Andrei Andryieuski, Technical University of Denmark, Denmark
  • Vladimir A. Zenin, University of Southern Denmark, Denmark
  • Radu Malureanu, Technical University of Denmark, Denmark
  • Valentyn S. Volkov, University of Southern Denmark, Denmark
  • Sergey I. Bozhevolnyi, University of Southern Denmark, Denmark
  • Andrei V. Lavrinenko, Technical University of Denmark, Denmark
We report a modified bow-tie antenna for light coupling to subwavelength plasmonic slot waveguide. Its effective area is 15 times larger than that of the bare waveguide termination at the wavelength 1.55 µm. We demonstrate numerical simulation, fabrication and, for the first time, full amplitude-phase near-field optical characterization of nanocoupler in telecom range.
14:45 - 15:00 - Application of D-dot Wire Concept in Optical Scattering and Radiating Systems Oral [Show abstract]
  • Silvio Hrabar, University of Zagreb, Croatia
  • Boris Okorn, Rudjer Boskovic Institute, Croatia
This contribution reviews recent extension of a concept of D-dot wire to D-dot loop. It is shown that D-dot loop is a dual of an ordinary loop antenna. Possible applications of this concept in planar optical metasurfaces as well as the recent experiments based on scaled RF replicas have been discussed.
15:00 - 15:30 - Coffee break (Thursday afternoon)
15:30 - 17:15 - Oral session (Thursday afternoon 2)
15:30 - Special Session 6: Quantum effects in metamaterials II / Chiral metamaterials

Organizer(s): Mario Silveirinha

Session chairperson(s): Mario Silveirinha; Nanfang Yu

15:30 - 16:00 - Coherence and Collective Behavior in SQUID Metamaterials Invited oral [Show abstract]
  • Steven Anlage, University of Maryland, USA
  • Daimeng Zhang, University of Maryland, USA
  • Melissa Trepanier, University of Maryland, USA
  • Oleg Mukhanov, Hypres, Inc., USA
Metamaterials made up of Radio Frequency (RF) Superconducting Quantum Interference Devices (SQUIDs) can display strongly nonlinear behavior over a range of parameters, including dc flux and rf power. The collective response of coupled arrays of rf SQUIDs as a function of dc magnetic field bias is observed to be surprisingly coherent. Here we examine the reasons for this coherence and quantify the limits for the collective behavior.
16:00 - 16:15 - Pulse Switching of Superconducting Metamaterials Oral [Show abstract]
  • Philipp Jung, Karlsruhe Institute of Technology, Physikalisches Institut, 76131, Karlsruhe, Germany
  • Susanne Butz, Karlsruhe Institute of Technology, Physikalisches Institut, 76131, Karlsruhe, Germany
  • Michael Marthaler, Karlsruhe Institute of Technology, Institut für Theoretische Festkörperphysik, 76131, Karlsruhe, Germany
  • Mikhail V. Fistul, Ruhr-Universität at Bochum, Theoretische Physik III, 44801 Bochum, Germany
  • Juha Leppäkangas, Microtechnology and Nanoscience, MC2, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
  • Valery P. Koshelets, Kotel’nikov Institute of Radio Engineering and Electronics, Moscow 125009, Russia
  • Alexey V. Ustinov, Karlsruhe Institute of Technology, Physikalisches Institut, 76131, Karlsruhe, Germany
We present a novel method for creating a microwave metamaterial with switchable magnetic properties based on superconducting quantum interference device meta-atoms. By applying short microwave pulses, these meta atoms can be switched between several oscillatory states each of which corresponds to a different susceptibility to magnetic flux. We also show that this effect can be used to build an all-optical microwave switch by embedding such a material in to the gaps of a coplanar waveguide.
Media link(s):

See arXiv preprint.

16:15 - 16:30 - Helically Corrugated Metallic Nanowires As Sources Of Plamonic Nanovortices Oral [Show abstract]
  • Fangwei Ye, Shanghai Jiao Tong Univ, China
We demonstrate that metallic nanowires imprinted with helical grooves or ridges can be used efficiently to generate plasmonic vortices with radius much smaller than the operat- ing wavelength. In particular, we show that the helical surface grating can be readily designed to phase-match different plasmon modes of the nanowire, thus allowing one to generate optical plasmon vortices with various topological charge.
16:30 - 16:45 - Helical Plasmonic Nanostructures as Prototypical Chiral Near-Field Sources Oral [Show abstract]
  • Martin Schäferling, 4th Physics Institute, University of Stuttgart, Germany
  • Xinghui Yin, 4th Physics Institute, University of Stuttgart, Germany
  • Nader Engheta, Department of Electrical and Systems Engineering, University of Pennsylvania, USA
  • Harald Giessen, 4th Physics Institute, University of Stuttgart, Germany
Plasmonic nanostructures can generate electromagnetic fields with high optical chirality that interact strongly with chiral molecules. We demonstrate how structures with chiral eigenmodes lead to chiral near- fields of predominantly one handedness. Our theoretical design with multiple metallic helices exhibits very high optical chirality over a large volume. The expected averaged chiroptical interaction is almost two orders of magnitude higher than for circularly polarized light.
16:45 - 17:00 - Elevating optical activity by On-Edge Lithography Oral [Show abstract]
  • Christoph Menzel, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Kay Dietrich, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Dennis Lehr, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Oliver Puffky, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Uwe Hübner, Leibniz Institute of Photonic Technology, Jena, Germany
  • Andreas Tünnermann, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Ernst-Bernhard Kley, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Thomas Pertsch, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
We propose a route towards increasing the chiroptical performance of single plasmonic chiral metamaterials by up to 2 orders of magnitude by using on edge lithography, which elevates 2D chiral nanostructures into 3D. Using the cell projection mode for resist exposure allows for fast and efficient fabrication of wafer-scale nanostructured samples. Our approach is fully compatible with nanoimprint eventually allowing for mass fabrication of chiral optical metamaterials.
17:00 - 17:15 - Tailoring of linear response from plasmonic nano-resonators grown on a polystyrene Oral [Show abstract]
  • Alessio Benedetti, Università di Roma La Sapienza, Italy
  • Alessandro Belardini, Università di Roma La Sapienza, Italy
  • Marco Centini, Università di Roma La Sapeinza, Italy
Regular array of plasmonic nanoantennas (nanocrescents) can be easily produced by grazing evaporating gold on a self-ordered surface formed by hexagonal arrangements of polystyrene nanospheres, thus realising a hybrid plasmonic-photonics nanostructures (HPPN). By using second harmonic generation (SHG) technique we experimentally demonstrated that asymmetry in the shape of the nanoantennas induces an optical chiral response of the whole sample
15:30 - Metasurfaces IV

Session chairperson(s): Samel Arslanagic

15:30 - 15:45 - Gap Plasmon-based Metasurfaces: From Amplitude to Phase Control of Reflected Light Oral [Show abstract]
  • Anders Pors, University of Southern Denmark, Denmark
  • Michael G. Nielsen, University of Southern Denmark, Denmark
  • Alexander S. Roberts, University of Southern Denmark, Denmark
  • Sergey I. Bozhevolnyi, University of Southern Denmark, Denmark
We demonstrate how metal-insulator-metal configurations, in which the upper metal layer is periodically structured, allow for efficient control of the amplitude and phase of the reflected light, emphasizing the presence of gap-surface plasmon resonances. We discuss applications of inhomogeneous metasurfaces, ranging from subwavelength plasmonic color printing to unidirectional polarization-controlled excitation of surface plasmon polaritons.
15:45 - 16:00 - Bandwidth improvement of multi-scale metal resonators arrays in a coplanar configuration Oral [Show abstract]
  • jianping hao, 0320197875, France
  • Ludovic Burgnies, Institut d’Electronique de Micro-électronique et de Nanotechnologie, France
  • M. Missner, Institut d’Electronique de Micro-électronique et de Nanotechnologie, France
  • Guillaume Ducournau, Institut d’Electronique de Micro-électronique et de Nanotechnologie, France
  • Eric Lheurette, Institut d’Electronique de Micro-électronique et de Nanotechnologie, France
  • Didier Lippens, Institut d’Electronique de Micro-électronique et de Nanotechnologie, France
<p> We report on the design, fabrication and experimental assessment of a planar broadband absorber for operation at millimeter wave. The unit super-cell consists of four square pads with various sizes printed on a polyethylene terephthalate (PET) dielectric substrate coated with Aluminum film ground-plane. An equivalent circuit model is utilized to analyze the absorption mechanism resulting from surface impedance matching over a fractional bandwidth 20 % for a central frequency around 85GHz. A prototype was fabricated using ink jet printing techniques while experimental verification has been performed at W band between 75-110GHz via vector network analysis under free space conditions.</p>
16:00 - 16:15 - Plasmonic Nanocone Arrays as Photoconductive and Photovoltaic Metamaterials Oral [Show abstract]
  • Sergei Zhukovsky, DTU Fotonik, Technical University of Denmark, Denmark
  • Viktoriia Babicheva, DTU Fotonik, Technical University of Denmark, Denmark
  • Andrey Evlyukhin, Laser Zentrum Hannover e.V., Germany
  • Igor Protsenko, P. N. Lebedev Physical Institute, Russian Academy of Sciences, Russia
  • Alexander Uskov, P. N. Lebedev Physical Institute, Russian Academy of Sciences, Russia
  • Andrei Lavrinenko, DTU Fotonik, Technical University of Denmark, Denmark
Photoconductive and photovoltaic properties of metamaterials comprising plasmonic nanocone arrays embedded in a semiconductor matrix are studied. Under uniform plane-wave illumination, directed photocurrent and electromotive force arise near asymmetrically shaped nanocones. The resulting giant photogalvanic effect is a plasmonic analogue of the bulk photovoltaic effect in ferroelectrics.
16:15 - 16:30 - Non-Plasmonic Light Trapping for Thin Film Solar Cells Oral [Show abstract]
  • Alexander Shalin, University ITMO, Russia
  • Constantin Simovskii, Aalto University, School of Electrical Engineering, Department of Radio Science and Engineering, Finland
  • Pavel Voroshilov, University ITMO, Russia
  • Pavel Belov, University ITMO, Russia
We propose the enhancement of the photovoltaic absorption in thin-film solar cells using densely-packed arrays (not obviously regular) of non-absorbing submicron or micron-sized non-plasmonic spheres located on top of the cell. The spheres can decrease reflection forming an effective blooming layer but simultaneously they can suppress the transmission through the photovoltaic layer transforming the incident radiation into a set of collimated beams. The focusing of the light inside the photovoltaic layer allows enhanced useful absorption in it leading to the increment of the photovoltaic current. Every sphere focuses the incident wave separately -- this mechanism does not require collective effects or resonances and is therefore takes place in a wide spectral range. Since the fabrication of such the coating is easy, our light-trapping structure may be cheaper than previously known light-trapping ones and perhaps even than flat anti-reflecting coatings.
16:30 - 16:45 - Metasurface Synthesis Using Reduced Susceptibility Tensors Oral [Show abstract]
  • Karim Achouri, Ecole Polytechnique de Montréal, Canada
  • Mohamed Ahmed Salem, Ecole Polytechnique de Montréal, Canada
  • Christophe Caloz, Ecole Polytechnique de Montréal, Canada
<p> We propose a general method to synthesize metasurfaces based on a polarizability-susceptibility scattering approach. We show that a minimal set of four non-zero effective electric and magnetic susceptibility tensor components is sufficient to theoretically transform an incident electromagnetic wave into a great diversity of transmitted and/or reflected waves, where the metasurface can provide positive and negative refraction, focusing, polarization rotation, power absorption and orbital angular momentum manipulation.</p>
16:45 - 17:00 - Theoretical Constraints on Reflection and Transmission through Metasurfaces Oral [Show abstract]
  • Laura M. Pulido-Mancera, National University of Colombia, Colombia
  • Juan D. Baena, National University of Colombia, Colombia
We have established a set of useful constraints that should be verified by thin metasurfaces made of perfect electric conductor. Mainly, we found that loci of transmission and reflection coefficients on the complex plane are circumferences. The properties shown in this paper may be useful for limiting the types of realistic responses desired for new metasurfaces.
17:00 - 17:15 - Full-Wave Modeling of Large-Area Aperiodic Metamaterials Oral [Show abstract]
  • Babak Memarzadeh, Northeastern University, USA
  • Jierong Cheng, Northeastern University, USA
  • Davood Ansari O. B., Northeastern University, USA
  • Hossein Mosallaei, Northeastern University, USA
We present a unique computational paradigm suited for the full wave analysis of aperiodic metamaterials and metasurfaces of complex building blocks. The structures are nonperiodic and of large area. We will be able to simulate such structures orders of magnetic faster than the current techniques, comprehensively and accurately. Unique physics will be presented.
15:30 - Nanoantennas and nanocircuits

Session chairperson(s): Carsten Rockstuhl

15:30 - 16:00 - Superdirective “Meta-Molecules” Invited oral [Show abstract]
  • Ekaterina Shamonina, University of Oxford, United Kingdom
  • Laszlo Solymar, Imperial College London, United Kingdom
We show that superdirectivity can be achieved in metamaterial structures by relying on magneto- and electro-inductive waves capable of providing the rapidly varying current distribution needed. Following our previous studies on dimers we extend in this paper our analysis to trimers of split rings coupled both magnetically and electrically. We deduce rigorous analytical conditions for achieving superdirectivity in terms of separation and detuning of meta-atoms, quality factors and mutual coupling. Our results may pave the way to the first realization of genuine superdirective metamaterials.
16:00 - 16:30 - Exciton-Plasmon Coupling: Across Scales Approach For Low-Loss Optical Metamaterials No show [Show abstract]
  • GIUSEPPE STRANGI, CASE WESTERN RESERVE UNIVERSITY, USA
The performance of all metamaterial-based applications is significantly limited by the inherent and strong energy dissipation present in metals, especially in the visible range. We experimentally demonstrate that the incorporation of excitonic material (chromophores) in the high-local-field areas of plasmon nanostructures induce coherent resonant energy transfer processes from chromophores (donors) to plasmon nanoentities (acceptors). Ultra-fast fluorescent time-resolved spectroscopy paired with transient absorption spectroscopy and spectroscopic ellipsometry in pump-probe configuration emphasize a strong exciton-plasmon coupling behind the process of non-radiative excitation energy transfer (RET). Across scales studies show how these energy transfer processes occurring at the nanoscale translate to bulk materials. Multipronged strategies – bio-inspired and bottom up - allowed obtaining important advances in materials science and paves the way toward further promising scientific research aimed to enable the wide range of electromagnetic properties of optical metamaterials.
16:30 - 16:45 - The spectral shift between near- and far-field resonances of optical nano-antennas Oral [Show abstract]
  • Christoph Menzel, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Erik Hebestreit, Photonics Laboratory, ETH Zürich, Switzerland
  • Stefan Mühlig, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Carsten Rockstuhl, Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, Germany
  • Sven Burger, Zuse Institute Berlin (ZIB), Germany
  • Falk Lederer, Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
  • Thomas Pertsch, Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Germany
Based on rigorous analytical and numerical grounds we have investigated the shift between near- and far-field resonances of optical nano-antennas. An easy to apply formula is derived connecting the near- and the far-field for electric dipolar antennas. We investigated in detail the subtleties of complicated spatial dependency of the shift arising for nano-antennas beyond the quasi-static limit. The approach is proven to be fully justified for realistic cylindrical nano-antennas.
16:45 - 17:00 - Electrically-Driven Surface Plasmonic Nano-Circuits Oral [Show abstract]
  • Min-Kyo Seo, KAIST, Korea (South)
  • Kevin Huang, Stanford University, USA
  • Tomas Sarmiento, Stanford University, USA
  • Yijie Huo, Stanford University, USA
  • James Harris, Stanford University, USA
  • Mark Brongersma, Stanford University, USA
We demonstrated electrically-driven optical nano-circuits integrating plasmonic nano-scale light-emitting diodes and subwavelength slot waveguides. The Purcell enhancement in the nano-scale light-emitting diode enables to efficiently extract gap plasmons from extremely small, metal-clad active medium. The gap plasmons are routed to plasmonic circuit components, such as bends, T-splitter, and directional coupler.
17:00 - 17:15 - Waveguides containing double cut-wire metamaterials – properties and applications Oral [Show abstract]
  • Thomas Kaiser, Friedrich-Schiller Universität Jena, Germany
  • Xiaohan Wang, Friedrich-Schiller Universität Jena, Germany
  • Christian Helgert, Friedrich-Schiller Universität Jena, Germany
  • Séverin Diziain, Friedrich-Schiller Universität Jena, Germany
  • Carsten Rockstuhl, Karlsruher Institut für Technologie (KIT), Germany
  • Thomas Pertsch, Friedrich-Schiller Universität Jena, Germany
Incorporating plasmonic nanostructures into a dielectric waveguides results in a device whose light guiding properties are determined by the geometry rather than the constituting materials. We show that a dielectric waveguide carrying a double-cut wire lattice on top allows to engineer the waveguide dispersion at will. We discuss the underlying physics and possible applications for dispersion-controlled nanocircuitry and integrated plasmonic biosensing.
17:15 - 17:45 - Closing ceremony

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