Ricardo Marqués, Facultad de Física, Universidad de Sevilla, Spain

Along this contribution some recent topics in bulk split ring metamaterials, which includes capacitively loaded rings and split ring resonators metamaterials, are reviewed. Among these topics are isotropy, relation between electromagnetic and magnetoinductive waves, spatial dispersion and chirality. (Hide)

Jean-Marc Baracco, Mardel, France
Yan Brand, MDA Inc. Space Mission, Canada
Ramon Gonzalo, Public University of Navarra, Spain
Andrea Neto, TNO Defence, Security and Safety, The Netherlands
Peter de Maagt, ESTEC, The Netherlands

This paper focuses on existing (sub)systems that are predominantly based on EBG and AMC technology. The applications are introduced, design challenges indicated and the results achieved presented. This gives a reasonable showcase of some successful implementations. (Hide)

Martin Wegener, Institut für Angewandte Physik, Universität Karlsruhe (TH), Germany
Stefan Linden, Institut für Angewandte Physik, Universität Karlsruhe (TH), Germany

We review recent progress in the field of metamaterials for photonics. Examples are artificial magnetism at optical frequencies, negative phase and group velocities, and enhanced nonlinear phenomena. (Hide)

Sergei Tretyakov, Helsinki University of Technology, Finland
Constantin Simovski, Helsinki University of Technology, Finland

We discuss the effective medium modelling of artificial materials where spatial dispersion effects are essential, for instance artificial magnetic metamaterials formed by split rings or dual-bar particles. We show that the artificial magnetic response is a spatial-dispersion effect of the second order. Since there exist other effects of the same order or stronger, we conclude that in many situations it is not possible to properly describe the composite in terms of only its effective permittivity and permeability: more parameters are necessary. We conclude with some examples of effective medium description for various geometries and excitations of metamaterial inclusions. (Hide)

Scott Rudolph, Dept. of EECS, University of Michigan, USA
Anthony Grbic, Dept. of EECS, University of Michigan, USA

In this paper, a simplified form of multiconductor transmission-line analysis is used to model a volumetric negative-refractive-index medium. The simplified model still takes into account the spatial dispersion of the medium, allowing the low-frequency cutoff and electric and magnetic plasma frequencies to be accurately predicted. (Hide)

Michael Wiltshire, Imperial College London, United Kingdom

The Swiss Roll structure is a very effective magnetic metamaterial at radiofrequency, and may be made in both conventional and chiral forms. In this presentation I will review the performance of the conventional mate-rial with particular emphasis on its imaging capability, and then describe the production and preliminary characterisation of chiral Swiss Rolls. (Hide)

Irina Vendik, St. Petersburg Electrotechnical University, Russia
Mikhail Odit, St. Petersburg Electrotechnical University, Russia

Different ways to create the 3-D isotropic and 2-D DNG medium based on a regular lattice of resonant inclu-sions are known: i) 2D array of dielectric cylindrical resonators; ii) 3D regular lattice of magnetodielectric spherical resonators; iii) 3D regular array of dielectric spherical resonant inclusions. In this paper we consider characteristics of a regular array of strongly coupled dielectric resonant spheres. The coupling between resona-tors leads to splitting resonance modes. The first Mie resonance in the dielectric sphere gives rise to the magnetic dipole. The electric dipole arises from the sphere interaction. Electric and magnetic dipole existence provides the DNG response of the media. The structure based on randomly distributed spherical resonators is considered. (Hide)

Filiberto Bilotti, University Roma Tre - Dept. of Applied Electronics, Italy
Simone Tricarico, University Roma Tre - Dept. of Applied Electronics, Italy
Lucio Vegni, University Roma Tre - Dept. of Applied Electronics, Italy

In this paper, we present the theoretical aspects and the full-wave simulations of multi-functional dipole antennas in presence of artificial magnetic material slabs. At first, the artificial magnetic material is assumed as an isotropic and homogenous material, whose permeability function follows the Lorentz dispersion. The operating frequency regions of interest are those ones in which the real permeability is positive and high-valued and those ones in which it is close to zero. In these two regions the slab behaves in substantially different ways, enabling two different operation modes for the dipole antenna. The physical operation of the antenna in the two frequency regions is deeply discussed and verified through a series of numerical examples. Then, the analysis is repeated replacing the ideal metamaterials with real materials made of given arrangements of artificial magnetic inclusions and the features of the corresponding antennas are pointed out. Finally, a few antenna layouts are proposed and the implementation of such radiators in real-life applications is also discussed. (Hide)

Titos Kokkinos, Dept. of Electronic and Electrical Engineering, Loughborough University, United Kingdom
Alexandros P. Feresidis, Dept. of Electronic and Electrical Engineering, Loughborough University, United Kingdom

A novel electrically small, self-resonant, monopole-like antenna is reported in this paper. The proposed antenna is composed of two low-profile, closely spaced, vertical posts, that are connected through a planar, fully-printed, metamaterial matching network. The effective high-μ property of the employed metamaterial network enable the proposed structure to operate as a folded monopole that becomes self-resonant irrespectively of its profile and achieves an operating bandwidth of up to 5% and a radiation efficiency of up to 80%. (Hide)

Silvio Hrabar, University of Zagreb, Croatia
Helga Kumric, University of Stuttgart, Germany
Davor Zaluski, University of Zagreb, Croatia

One of interesting applications of backward-wave propagation deals with leaky-wave radiating structures with back-fire to end-fire scanning capabilities. However, majority of published designs are in planar technology, thus they are unsuitable for high-power applications. In this report, the main problems in design of high-power leaky-wave antenna are highlighted and the waveguide antenna based on a chain of the resonant-slot coupled cavity chain is proposed. (Hide)

Pere J. Ferrer, AntennaLab - UPC, Spain
Irena Calafell, AntennaLab - UPC, Spain
José M. González-Arbesú, AntennaLab - UPC, Spain
Jordi Romeu, AntennaLab - UPC, Spain

The bandwidth and size behaviours of patch antennas are studied for the case of lossless and non-dispersive material substrates loaded with positive values of permittivity and permeability. High bandwidths can be achieved for high permeability and low permittivity substrates. (Hide)

Shanhui Fan, Stanford University, USA

In this presentation we will discuss our recent works on designing three-dimensional isotropic meta-materials that exhibit large refractive index. We will also discuss Tungsten solar absorber that operates over the entire solar bandwidth, and over wide ranges of angles. (Hide)

Patrick Sebbah, CNRS, France
Christian Vanneste, CNRS, France

We present a numerical study of light scattering in active random media. A two dimensional random struc-ture of dielectric scatterers embedded in a gain medium is systematically explored at threshold when the refrac-tive index of the scatterers is varied from 1.05 to 2. This allows us to explore the nature of the quasimodes in regimes of light propagation ranging from diffusive to localized. (Hide)

Alessandro Toscano, Università Roma Tre, Italy
Sebastian Emanuel Lauro, Università Roma Tre, Italy
Lucio Vegni, Università Roma Tre, Italy

Starting from the lumped-element approach recently presented in Alù et al. (published on line at http://arxiv.org/abs/0710.0616v1), we present here a new schema to design a filtering module at optical frequencies, using collections of nanoparticles acting as "lumped" nanocircuit elements. We, first, demonstrate, using numerical simulations of a fully 3D geometry of lumped nanocircuit elements at optical frequencies, that the behavior of these nanoelements may strongly reproduce that of their lower frequency counterparts. A complete analysis through design formulas of nanoscale filtering 3D modules at optical frequencies is then presented and discussed. (Hide)

Matthew Mishrikey, ETH Zurich, Switzerland
Arya Fallahi, ETH Zurich, Switzerland
Christian Hafner, ETH Zurich, Switzerland
Ruediger Vahldieck, ETH Zurich, Switzerland
Leonid Braginsky, ETH Zurich, Switzerland
Valery Shklover, ETH Zurich, Switzerland

Graded thermal barrier coatings can be simulated and optimized using numerical field solvers. We apply an effective material approximation to reduce the computation time for these metamaterials, and show that the approximation provides a suitable lower bound on their performance. (Hide)

Richard R.A. Syms, Imperial College London, United Kingdom
Ian R. Young, Imperial College London, United Kingdom
Laszlo Solymar, Imperial College London, United Kingdom

A flexible metamaterial RF detector for magnetic resonance imaging is described. The circuit consists of a polygonal arrangement of magnetically coupled L-C resonators with rectangular inductors, which supports magneto-inductive waves. The elements are mechanically linked to allow adjacent elements to rotate as the ring is flexed. The pivot is optimised to hold the nearest neighbour coupling coefficient k1 invariant to small changes in angle so resonances are unaffected. Theory is developed to find the optimum pivot and verified using PCB elements. (Hide)

Harald Giessen, Universität Stuttgart, Germany

In this paper, we demonstrate magnetic ordering in three-dimensional magnetic metamaterials at optical fre-quencies. We present a detailed study on the coupling effects in 3D magnetic metamaterials. We further show that the interaction between magnetic moments carried by individual magnetic constituents in metamaterials can give rise to ferromagnetic and antiferromagnetic ordering in 3D twisted split-ring resonator and 3D fishnet metamaterials, respectively. We explain the complex optical spectra, symmetries as well as selection rules of these 3D metamaterials by the hybridization of the magnetic response. (Hide)

Hui Cao, Department of Applied Physics, Yale University, USA
Heeso Noh, Materials Research Institute, Northwestern University, USA
Michael Scharrer, Materials Research Institute, Northwestern University, USA
Mark A. Anderson, Materials Research Institute, Northwestern University, USA
Robert P. H. Chang, Materials Research Institute, Northwestern University, USA

We measured the angle- and polarization-resolved reflection and photoluminescence spectra of ZnO inverse opals. Significant enhancement of spontaneous emission is observed. The enhanced emission not only has good directionality but also can be linearly polarized. A detailed theoretical analysis and numerical simulation reveal that such enhancement is caused by the abnormal dispersion of a high-order photonic band. The frozen mode at a stationary inflection point of a dispersion curve can strongly modify the intensity, directionality and polarization of spontaneous emission. (Hide)

Stefan Linden, Forschungszentrum Karlsruhe, Germany
M. Decker, Universität Karlsruhe, Germany
M. Ruther, Forschungszentrum Karlsruhe, Germany
M. Wegener, Universität Karlsruhe, Germany

We present some of our recent experimental results and numerical calculations on “2D-chiral” and 3D-chiral metamaterials operating at optical frequencies. (Hide)

Vassili A. Fedotov, Optoelectronics Research Centre, University of Southampton, United Kingdom
N. Papasimakis, Optoelectronics Research Centre, University of Southampton, United Kingdom
E. Plum, Optoelectronics Research Centre, University of Southampton, United Kingdom
S. L. Prosvirnin, Institute of Radio Astronomy, National Academy of Sciences, Kharkov, Ukraine
N. I. Zheludev, Optoelectronics Research Centre, University of Southampton, United Kingdom

We will overview our recent and ongoing research of a novel class of metamaterials exhibiting narrow high-Q transmission and reflection resonances linked to so-called “trapped-modes” excitations, and will introduce a concept of a “coherent” metamaterial, where narrow resonance is formed by a collective response of the entire metamaterial structure rather than by that of individual meta-molecules. (Hide)

Atiqur Rahman, Electronic Engineering Dept., Queen Mary Univ. of London, United Kingdom
Yang Hao, Electronic Engineering Dept., Queen Mary Univ. of London, United Kingdom
Clive Parini, Electronic Engineering Dept., Queen Mary Univ. of London, United Kingdom

In this paper we offer a solution to the reduction of the undesired lobes of interdigital capacitor and stub inductor based leaky-wave antenna fabricated on a finite size ground plane while keeping antenna compactness intact. This technique can be applied for the CRLH-TL based leaky-wave antenna reported in [1] and [2]. (Hide)

Judith Spiegel, Université Catholique de Louvain, Belgium
Stéphanie Eggermont, Université Catholique de Louvain, Belgium
Isabelle Huynen, Université Catholique de Louvain, Belgium

Ferromagnetic nanowired membranes are good candidates for miniaturized tunable and non-reciprocal devices. We propose a novel topology of leaky-wave antenna, where broadside scanning is obtained by a left-handed behavior induced by negative permeability of the substrate. The ferromagnetic nature of wires allows beam scanning at fixed frequency by applying an external magnetic DC field. (Hide)

Sumanth Kumar Pavuluri, School of Engineering & Physical Sciences,Heriot-Watt University, United Kingdom
Feresidis Alexandros, Dept. of Electronic and Electrical Engineering, Loughborough University, United Kingdom
George Goussetis, School of Engineering & Physical Sciences, Heriot-Watt University, United Kingdom
Changhai Wang, School of Engineering & Physical Sciences, Heriot-Watt University, United Kingdom

A novel high gain planar antenna for operating at 60 GHz using a suspended frequency selective surface (FSS) has been investigated. The device is based on the concept of a FSS based Fabry-Perot cavity for high directivity. The FSS structure is on a thin film polymer film to reduce loss and to produce a low profile device. The thin film substrate is suspended above the ground plane using a micro-machined polymer ring spacer. The excitation of the cavity is provided using a waveguide-fed aperture in the ground plane. For device fabrication, the polymer spacer will be fabricated on the thin film substrate after the FSS structure has been produced and will then be assembled onto the substrate with the ground plane using a low temperature polymer bonding process. The design of the FSS was carried out using method of moment code by analysing the reflectivity of the structure. The FSS is then incorporated into the antenna structure for device design and modelling using MicrostripesTM, a time domain based electromagnetic (EM) simulation package. The results show that the novel antenna device has substantial directivity of around 25 dBi required for WLAN communications at 60 GHz frequency band. (Hide)

Dongho Kim, Electronics and Telecommunications Research Institute, South Korea
Junho Yeo, Daegu University, South korea

This paper presents a Fabry-Pérot type resonator antenna whose superstrate and substrate are composed of an array of conductive strips and an artificial magnetic conductor (AMC), respectively. The main purpose of this antenna is to introduce more than -20dB rejection band in-between two adjacent service bands (up- and down-link bands) of Korean personal communication service (PCS). Additionally, with the help of metallic walls enclosing all the opening between the super- and substrate, more than 10dB realized gain in two operation bands is obtained and the back radiation is reduced remarkably. (Hide)

Titos Kokkinos, Dept. of Electronic and Electrical Engineering, Loughborough University, United Kingdom
Tomas Rufete-Martinez, Dept. of Electronic and Electrical Engineering, Loughborough University, United Kingdom
Alexandros P. Feresidis, Dept. of Electronic and Electrical Engineering, Loughborough University, United Kingdom

An electrically small, superdirective, two-element, microstrip-based, single port, endfire array is reported in this paper. The proposed endfire array is composed of two low-profile folded monopoles that attribute their operation to an embedded metamaterial high-μ matching network. Given the self-resonant characteristics of the employed radiating elements and the extremely low coupling between any pair of them, the array feeding network, that properly sets the array superdirective mode, is composed exclusively of a 180o ring hybrid and conventional microstip lines. The resulting two-element array is compact, easily fabricated, low-cost and can deliver directivities up to 3 dB larger than those of the single element. (Hide)

Victor I. Balykin, Institute of Spectroscopy, Russia
Pavel N. Melentiev, Institute of Spectroscopy, Russia
Dmitry A. Lapshin, Institute of Spectroscopy, Russia

In this presentation we report on a new approach in atom lithography that is based on the use the atom pinhole camera. Owing to the use of this approach, an array of 10^7 identical nanostructures of arbitrary shapes and characteristic size of 30 nm of In, Cr and Ag atoms has been created on a silicon surface. (Hide)

Iris Bergmair, Profactor GmbH, Austria
Michael Muehlberger, Profactor GmbH, Austria
Rainer Schoeftner, Profactor GmbH, Austria
Michael Bergmair, CD Laboratory for Surface Optics, Austria
Ulrich Dobramysl, CD Laboratory for Surface Optics, Austria
Thomas Glinsner, EV Group Schärding, Austria
Kurt Hingerl, CD Laboratory for Surface Optics, Austria

We show our Nanoimprint Lithography work regarding the realization of a 3D woodpile photonic crystal and negative index materials using this technology and its suitability as a fabrication method for such structures. In both materials negative refraction can occur but its origin is quite different and is discussed in short in this work. (Hide)

Sergey Tarapov, Institute of Radiophysics and Electronics, NAS of Ukraine, Ukraine
D. Belozorov, NSC “Kharkov Institute of Physics & Technology”, NAS of Ukraine, Ukraine
S. Chernovtsev, Institute of Radiophysics and Electronics, NAS of Ukraine, Ukraine
M. Khodzitskiy, Institute of Radiophysics and Electronics, NAS of Ukraine, Ukraine

The paper is devoted to modeling and experimental research of surface states of electromagnetic waves in a bounded magnetophotonic crystal in GHZ band. The experimental specimen is a 1D periodical structure. The elementary Bloch cell of the structure consists of three successive plates of ferrite-quartz-vacuum. Good agreement between experiment and simulation is observed. (Hide)

Polina Kuzhir, Institute for Nuclear Problems of Belarusian State University, Belarus
Sergey Maksimenko, Institute for Nuclear Problems of Belarusian State University, Belarus
Dmitry Bychanok, Institute for Nuclear Problems of Belarusian State University, Belarus
Sergey Moseenkov, Boreskov Institute of Catalysis SB RAS, Russia
Vladimir Kuznetsov, Boreskov Institute of Catalysis SB RAS, Russia
Olga Shenderova, International Technology Center, USA
Philippe Lambin, FUNDP – University of Namur, Belgium

The experimental study of a novel technological material – onion like carbon (OLC) – in microwaves demonstrates its high potentiality for the design of electromagnetic coatings in the form of OLC-based compos-ites. (Hide)

Oleksandr Glushko, University of Leoben, Austria
Ronald Meisels, University of Leoben, Austria
Friedemar Kuchar, University of Leoben, Austria

In this contribution we present numerical simulations as well as experimental investigations of 1D photonic crystal with intentionally introduced surface roughness. Transmission experiments were performed in the microwave region on a mm-sized structure with roughness of the order of 10 percent. The simulations show the general effect of band edges smearing and reducing of the depths of the gaps. However, the effect becomes significant only for wavelengths which are of the same order with the surface roughness features. Besides, we have shown that if increasing roughness cause decreasing of air filling fraction of a photonic crystal this lead to "shrinking" of the entire band structure resulting in redshift of the gaps edges. (Hide)

Ekmel Ozbay, Bilkent University, Turkey

In this talk, we will review our research on fabrication, characterization and applications of millimeter wave scale metamaterials. (Hide)

Steven J. Franson, Motorola, USA
Richard Ziolkowski, University of Arizona, USA

As wireless trends dictate that ever increasing data rates will be demanded by consumers, it is imperative that technology capable of delivering multi-gigabit per second speeds be developed. The data rates for lower GHz communication links are quickly saturating as spectral efficiency is being pushed to its limits. To address this issue, several start-up companies have begun deploying millimeter-wave point-to-point links near 60, 70, 80, and 90 GHz, where there is plenty of available spectrum. This article addresses the design of one of the most critical and expensive components in these systems: the antenna. We examine a grid superstrate, which has been described previously as a `zero-n' metamaterial structure, integrated with a patch antenna and demonstrate that one can achieve gigabit per second data rate transmissions with this high directivity antenna system. (Hide)

Mario Sorolla, Universidad Pública de Navarra, Spain
Miguel Beruete, Universidad Pública de Navarra, Spain
Miguel Navarro-Cia, Universidad Pública de Navarra, Spain
Igor Campillo, CIC nanoGUNE, Spain
Mariam Aznabet, Universidad Pública de Navarra, Spain
Otman El Mrabet, Universidad Pública de Navarra, Spain
Francisco Falcone, Universidad Pública de Navarra, Spain
Sergei A. Kuznetsov, Budker Institute of Nuclear Physics SB RAS, Russia
A. V. Gelfand, Institute of Semiconductor Physics SB RAS, Russia
N. I. Fedorinina, Institute of Semiconductor Physics SB RAS, Russia

The possibilities to design novel lefth handed metamaterials operating at millimeter and THz wavelengths by stacking subwavelength hole arrays will be considered. Moreover, negative refraction by means of prisms and by oblique incidence measurements will be discussed. These facts open the way to the design of a planoconcave parabolic negative index lens operating at millimeter wavelengths. The possibility to design similar planoconcave devices in the terahertz and optical wavelengths could be open. (Hide)

Qian Zhao, Tsinghua University, China
Lei Kang, Tsinghua University, China
Hongjie Zhao, Tsinghua University, China
Ji Zhou, Tsinghua University, China
Fuli Zhang, Université de Lille, France
Didier Lippens, Université de Lille, France

Two approaches for metamaterials with negative permeability based on ceramic dielectric materials, instead of metallic structure, are introduced. One of them is derived from Mie resonance of dielectric particles, and the other from magnetic resonance in the ferrites. The tuning of the negative permeability is realized in these two systems by temperature and external magnetic field. (Hide)

Nader Engheta, University of Pennsylvania, USA
Andrea Alu, University of Pennsylvania, USA

Here we give an overview of our recent efforts in developing techniques for manipulating the functional-ities of optical nanoantennas using the concepts of optical nanocircuit elements. We have shown, through extensive analytical and numerical studies, that optical nanoantennas may be tuned at different wavelengths at will, loaded with nanoelements for filtering signals, and matched to optical waveguides for efficient energy cou-pling using optical nanostructures that behave as lumped optical nanoelements. This can provide useful and versatile design methodologies in structuring and engineering optical nanoantennas within the context of plasmonic nano-optics, and manipulation of optical fields and optical signal processing at the nanoscale. (Hide)

Aitzol Garcia-Etxarri, Donostia International Physics Center and Centro Mixto de Física de Materiales (CSIC-UPV/EHU), Spain
Isabel Romero, Donostia International Physics Center, Spain
F. Javier García de Abajo, Instituto de Óptica, Spain
Rainer Hillenbrand, CIC nanoGUNE Consolider, Spain
Javier Aizpurua, Donostia international Physics Center and Centro Mixto de Física de Materiales (CSIC-UPV/EHU), Spain

We study the role of a probing tip in the imaging and control of the plasmon patterns in metallic nanoparticles with use of scattering-type scanning near-field optical microscopy (s-SNOM). We identify a weakly interacting regime and strongly interacting regime with modification of the plasmon patterns of the optical antennas. (Hide)

Javier Aizpurua, Donostia International Physics center and Centro Mixto de Fisica de Materiales (CSIC-UPV/EHU), Spain
Aitzol Garcia-Etxarri, Donostia International Physics Center and Centro Mixto de Fisica de Materiales (CSIC-UPV/EHU), Spain
Thomas Taubner, Stanford University, USA
Rainer Hillenbrand, CIC Nanogune Consolider, Spain
Frank Neubrech, University of Heidelberg, Germany
Annemarie Pucci, University of Heidelberg, Germany

We analyse the role of metallic antennas to effectively enhance the signal and contrast in molecular spectroscopy both in the optical and infrared regions. We report largely enhanced spectroscopy from a few molecules of ODT deposited on a gold nanoantenna, as well as from molecular layers in the cavity of a near-field microscope. (Hide)

Sergiy Steshenko, University of Siena, Italy
Filippo Capolino, University of Siena, Italy

In this presentation we analyze the near-field enhancement effects obtained in the visible domain by using arrays of resonant plasmonic nanospheres. We consider the excitation of a double-layer array of silver nano-spheres by a single electric dipole and focus on two aspects: (a) the analysis of the field on the other side of the layers of nanospheres showing where the field is localized, and (b) what happens when the arrays of nanospheres are not aligned. The array scanning method (ASM) is used to carry out the analysis and evaluate the field maps. (Hide)

Paul Kinsler, Imperial College London, United Kingdom
Martin McCall, Imperial College London, United Kingdom

Using causality as expressed in the Kramers-Kronig relations, we derive a criterion for negative refraction that allows for the case of imperfect transparency at the observation frequency. Such conditions rely on the group velocity, not direction of energy-flow, so we discuss (with examples) their relationship to the usual NPV criteria. (Hide)

Ali Eren Culhaoglu, German Aerospace Center, Germany
Andrey Osipov, German Aerospace Center, Germany
Peter Russer, Technical University of Munich, Germany

In this work the effect of dispersion onto the imaging quality of a planar metamaterial slab is investigated. Transmission of broadband pulses with a Gaussian spectrum through a Drude model based, impedance matched to free space, composite right/left handed (CRLH) slab is considered. The configuration is studied numerically via the transmission line matrix method. (Hide)

Marco Ribeiro, Instituto de Telecomunicações, Portugal
Carlos Paiva, Instituto de Telecomunicações, Portugal

Using spacetime algebra we introduce, in the context of Minkowski spacetime, a new technique that we call the vacuum form reduction. It is a straightforward and synthetic 4D analysis of electromagnetic wave propagation in moving media. This new tool avoids the cumbersome manipulations of dyadic 3+1 analyses. As an example of application we analyze negative refraction at a plane interface between two different moving half-spaces. (Hide)

Vasundara Varadan, University fo Arkansas, USA
Ruyen Ro, University of Arkansas, USA

The phenomenon of negative refraction has been demonstrated experimentally and by numerical simula-tion assuming Drude and Lorentz models for the permittivity and permeability that lead to a negative refractive index. In this paper we present direct experimental measurements of the permittivity, permeability and refractive index of combined wire-SRR samples and present some paradigms for tailored metamaterial design. (Hide)

Eugene Kamenetskii, Ben Gurion University of the Negev, Israel

The term "magnetoelectric" (ME) should presume the presence of mechanisms of interactions different from electromagnetic (EM) interactions. There could be, for example, natural ME crystals with the parity-non-conservation properties. Other examples are piezoelectric-ferromagnetic composites and magnetic ferroelectrics with a special mechanical character of ME interaction. In this paper, we show that there exist non-EM mechanisms of interactions between magnetic-dipolar-mode (MDM) ferrite particles which are, in fact, the ME interactions due to the symmetry breaking effects. (Hide)

Didier Lippens, University of Lille 1 / IEMN, France

In this presentation, we review the various technologies aiming at operating in the Terahertz spectral re-gion. At these frequencies, there is a strong overlap between the microwave and optical technologies relying on metal-dielectric and full-dielectric artificial microstructures. (Hide)

Stefan Maier, Imperial College, United Kingdom
C. R. Williams, University of Bath, United Kingdom
S. R. Andrews, University of Bath, United Kingdom
Antonio Fernández-Domínguez, Universidad Autónoma de Madrid, Spain
Francisco García-Vidal, Universidad Autónoma de Madrid, Spain
Luis Martín-Moreno, Universidad de Zaragoza, Spain

This invited presentation will present an overview of the spoof surface plasmon polariton concept, providing a means for creating a plasma response and hence a strong field confinement using structured metallic sur-faces at THz and microwave frequencies. Implementations for both planar and cylindrical structures with operating frequencies around 1 THz will be discussed, and application opportunities as well as constraints outlined. (Hide)

Richard Averitt, Boston University, USA
Andrew Strikwerda, Boston University, USA
Hu Tao, Boston University, USA
Kebin Fan, Boston University, USA
Xin Zhang, Boston University, USA
John O'Hara, Los Alamos National Lab., USA
Hou-Tong Chen, Los Alamos National Lab., USA
Antoinette Taylor, Los Alamos National Lab., USA
Nathan Landy, Boston College, USA
Chris Bingham, Boston College, USA
Willie Padilla, Boston College, USA

Recent results using plasmonic and metamaterial composites to manipulate terahertz radiation will be presented with an emphasis on exploiting the substrate dielectric properties to enhance or control the overall effective medium response. (Hide)

Ajay Nahata, University of Utah, USA
Wenqi Zhu, University of Utah, USA
Amit Agrawal, University of Utah, USA

We demonstrate the realization of planar plasmonic THz guided-wave devices, including straight wave-guides, Y-splitters and 3dB-couplers, using periodically perforated metal films. These perforated films be-have as effective media whose dielectric function can be broadly engineered. (Hide)

Allan Boardman, University of Salford, United Kingdom
Peter Egan, University of Salford, United Kingdom
Rhiannon Mitchell-Thomas, University of Salford, United Kingdom
Yuriy Rapoport, University of Salford, United Kingdom

The fundamental approach to a slowly varying amplitude formulation for nonlinear waves in metamaterials will be established. It is emphasized that it is particularly important to consider strongly nonlinear approach that seeks exact solutions to the nonlinear equations for a metamaterial guide. New types of localised modes are shown to exist. (Hide)

David Powell, The Australian National University, Australia
Ilya Shadrivov, The Australian National University, Australia
Yuri Kivshar, The Australian National University, Australia

We experimentally demonstrate bistability in a nonlinear left-handed transmission line. This system is an analogue of nonlinear left-handed metamaterials, which were theoretically predicted to exhibit this phenomena. We show that the bistability is associated with the period doubling which at higher power may result in chaotic dynamics of the transmission line. (Hide)

Olga Kozina, Saratov Branch of the Institute of Radio-Engineering and Electronics of Russian Academy of Science, Russia
L. A. Melnikov, Saratov State University, Russia

We present the results of calculations of laser action in 1D and 2D PC with air/glass-doped layers. The spectral and spatial characteristics of finite length 1D and 2D PC with air-glass-doped medium was examined. The model of active medium corresponds to Nd3+ doped glass. Both in-plane and out of plain propagation are investigated. Threshold conditions and laser characteristics are presented. (Hide)

Concita Sibilia, Universitá di Roma La Sapienza, Italy
Maria Cristina Larciprete, Universitá di Roma La Sapienza, Italy
Alessandro Belardini, Universitá di Roma La Sapienza, Italy
Marco Centini, Universitá di Roma La Sapienza, Italy
Mario Bertolotti, Universitá di Roma La Sapienza, Italy
Michael Scalora, Charles M. Bowden Research Facility, USA

We experimentally and theoretically investigate the second order nonlinear optical response of metallodielectric multilayer structures composed of Ag and Ta2O5 layers. Second harmonic generation measurements were performed in reflection mode as a function of incidence angle, using femtosecond pulses originating from a Ti:sapphire laser system tuned at lamda of 800 nm . (Hide)

Oleksiy Sydoruk, SAOT, University of Erlangen-Nuremberg, Germany
Viktor Kalinin, Transense Technologies Ltd, United Kingdom
Richard Syms, Imperial College London, United Kingdom
Ekaterina Shamonina, SAOT, University of Erlangen-Nuremberg, Germany
Lazlo Solymar, Imperial College London, United Kingdom

Self-consistent wave solutions for structures consisting of drifting plasmas and dielectrics are presented and the appearance of growing waves in one of the models is shown. The role of collisions and diffusion is discussed and the direction of future work aimed at devices is indicated. The requirement for velocity matching implies that eventually periodic structures and space harmonics are needed so that these devices will form a new type of amplifying metamaterials. (Hide)

Alejandro Lucas Borja, Universidad Politécnica de Valencia. Université de Lille 1., Spain
Jorge Carbonell, Universidad Politécnica de Valencia, Spain
Vicente E. Boria, Universidad Politécnica de Valencia, Spain
Michel Chaubet, Centre National d’Etudes Spatiales (CNES), France
Didier Lippens, Université de Lille 1, France

The design of compact metamaterial-based planar filters operating at the G-band (150 GHz central frequency) is studied through the implementation of a split ring resonator loaded coplanar waveguide technology. Technological issues and filter application specifications impose severe constraints to the design, fabrication and RF assessment of this type of devices. Specifically, the filter selectivity issue is addressed as a trade-off between the acceptable insertion loss in the transmitted band and the achievable upper band rejection level. The addition of semi-lumped elements to previous unit cell implementations improves this critical design feature. (Hide)

Andrea Vallecchi, University of Siena, Italy
Filippo Capolino, University of Siena, Italy
Matteo Albani, University of Siena, Italy

In this presentation we show how a metamaterial can be designed by using pairs of tightly coupled conductors as constitutive elements. To model the propagation through the proposed layered metamaterials, we develop a transverse equivalent circuit network to be interposed in the transmission line model of propagation across lay-ers, and show that reflection and transmission features of a periodic array of dogbone pairs is accurately predicted by this simplified model. (Hide)

Eva Rajo-Iglesias, Universidad Carlos III de Madrid, Spain
Oscar Quevedo-Teruel, Universidad Carlos III de Madrid, Spain
Malcolm Ng Mou Kehn, University of Manitoba, Canada

Split Ring Resonators (SRRs) provide an effective negative permeability within a given frequency band. This property can be used for loading conventional waveguides in order to create new passbands below waveguide cutoff frequency or stopbands after that frequency. This work explores different possibilities of creating multiple stopbands by using arrays of differently sized SRRs both, interlacing them over the shared surface of a dielectric slab and combining SRRs with different sizes of the elements in a middle slab position with side slab ones. Numerical and experimental results are presented. (Hide)

Oleksiy Sydoruk, SAOT, University of Erlangen-Nuremberg, Germany
Vadym Lomanets, Max Planck Research Group, University of Erlangen-Nuremberg, Germany
Eugen Tatartschuk, SAOT, University of Erlangen-Nuremberg, Germany
Georgy Onishchukov, Max Planck Research Group, University of Erlangen-Nuremberg, Germany
Ulf Peschel, Max Planck Research Group, University of Erlangen-Nuremberg, Germany
Ekaterina Shamonina, SAOT, University of Erlangen-Nuremberg, Germany

Waves propagating on chains of coupled resonators have recently received an increased attention due to their potential for signal guiding and processing from microwaves to optics. Various theoretical models for electric and magnetic resonators predict similar dispersion characteristics in the presence of retardation, but those dispersion characteristics have not yet been verified experimentally in the entire Brillouin zone. Here we report on an experimental and numerical study of the waves propagating on arrays of coupled split-ring resonators around 12 GHz. Dispersion characteristics extracted from the measurements and simulations are in a good agreement. (Hide)

Natalia Grigorieva, St. Petersburg Electrotechnical University, Russia
Boris Kalinikos, St. Petersburg Electrotechnical University, Russia

We present a general approach to the analysis of the dispersion characteristics of the planar magnetic periodic structures. The considered structure, based on a magnetic thin film with a metallic grating near one of its surfaces, exhibits the specific properties of magnetic metamaterial. It can be proposed as a test ground for experimental investigation of the linear and nonlinear properties of propagating spin waves (SW) in 1D magnonic crystals. Analytical theory of the dipole-exchange SW spectrum in such periodic structures is presented. A detailed discussion of the main dispersion parameters of the sample structure is given. (Hide)

Vladimir Gorelik, P.N. Lebedev Physical Institute of RAS, Russia

In this report the results of linear and nonlinear optical properties investigations of globular photonic crystals, filled by dielectrics or metals, are presented. (Hide)

Giuseppe D'Aguanno, C.M. Bowden Research Facility, USA
Nadia Mattiucci, C.M. Bowden Research Facility, USA
Mark Bloemer, C.M. Bowden Research Facility, USA

We find the analytical expression for the threshold intensity necessary to launch ultra-slow light pulses in a metamaterial with simultaneous cubic electric and magnetic nonlinearity. The role played respectively by the permittivity, the permeability, the electric cubic nonlinearity, the magnetic cubic nonlinearity and the pulse dura-tion is clearly identified and discussed. (Hide)

Ibraheem Al-Naib, Technical University of Braunschweig, Germany
Christian Jansen, Technical University of Braunschweig, Germany
Martin Koch, Technical University of Braunschweig, Germany

In this paper, a miniaturized rectangular asymmetric double split resonator is proposed. Moreover, a modified design for intensified field confinement in the gaps is suggested to further increase the sensitivity for thin-film sensing. A comparative study is demonstrated to show the potential of the proposed structure. (Hide)

Michael Sigalov, Ben Gurion University of the Negev, Israel
Eugene Kamenetskii, Ben Gurion University of the Negev, Israel
Reuven Shavit, Ben Gurion University of the Negev, Israel

Recently, a new microwave magnetoelectric (ME) effect was found. The effect is based on the fact that magnetic-dipolar-mode (MDM) oscillations in quasi-2D ferrite disks are macroscopic quantum coherence states with topological vortex structures and eigen electric and magnetic moments. Based on our analytical, numerical and experimental studies we predict now microwave ferrite ME particles and arrays that allow the design of electrostatic-control spin-based logic devices at room temperature. The key advantage of the proposed architecture is that for logic operations one does not need current pulses. So both information storage and information manipulation are accomplished without charge transfer. We consider an implementation of quantum gates for quantum computation using macroscopically quantized MDM states in quasi-2D ferrite disks. (Hide)

Galina Kraftmakher, Institute of Radioengineering and Electronics RAS, Russia
Valery Butylkin, Institute of Radioengineering and Electronics RAS, Russia

It is presented new microwave nonreciprocal properties of metasandwiches “ferrite plate–gratings of reso-nant elements” under propagation along structures. It is observed both nonreciprocal transmission at ferromag-netic resonance domain and nonreciprocal splitting of curve with band enhancement at domain of resonance in elements of grating under small magnetostatic fields. The results can be used for development of novel nonrecip-rocal meta-systems and informational technologies. (Hide)

Valery Butylkin, Institute of Radioengineering and Electronics RAS, Russia
Galina Kraftmakher, Institute of Radioengineering and Electronics RAS, Russia

It is shown that metamaterials of gratings of oppositely arranged planar chiral elements are media in which chirality is nullified, resonant properties of permeability and permittivity being retained. It is found that there are: 1) a left-handed pass-band with simultaneously negative permeability and permittivity and backward wave, 2) right-handed pass-bands with positive permeability and permittivity and forward wave. (Hide)

Adam Kusiek, Gdansk University of Technology, Poland
Rafal Lech, Gdansk University of Technology, Poland
Jerzy Mazur, Gdansk University of Technology, Poland

The analysis of a polarization rotator structure is presented in this paper. The polarizer is composed of N sections of frequency selective surfaces (FSS). Each FSS is composed of periodic array of conducting ellipses. The exact full-wave theory based on the mode-matching method, T matrix approach and the lattice sums is applied to analyze the structures. The validity of the approach is verified by comparing the results with those obtained from equivalent circuit models of conducting strips or wires gratings based on the transmission line theory. (Hide)

Rafal Lech, Gdansk University of Technology, Poland
Adam Kusiek, Gdansk University of Technology, Poland
Jerzy Mazur, Gdansk University of Technology, Poland

This paper presents the analysis of electromagnetic wave scattering by multilayered periodic structure composed of cylindrical dielectric posts which constitutes a two-dimensional (2-D) electromagnetic band gap (EBG) structure. The analysis is conducted with the use of several efficient numerical techniques such as the orthogonal expansion method, the T-matrix approach and the lattice sums technique. The scattering properties of the EBG structure are discussed. The electromagnetic curtain effect and its control are presented. (Hide)

Jorge Carbonell, Universidad Politécnica de Valencia, Spain
Eric Lheurette, Université des Sciences et Technologies de Lille, France
Alejandro Lucas Borja, Universidad Politécnica de Valencia, Spain
Vicente E. Boria, Universidad Politécnica de Valencia, Spain
Didier Lippens, Université des Sciences et Technologies de Lille, France

In this paper, the problem of a normally incident radiation illuminating a stack of Split Ring Resonator (SRRs) surfaces is analyzed. We start from the simple case of a single surface of SRRs being opaque to the inci-dent radiation at a frequency close to the resonant frequency of the SRRs, with a typically rejecting frequency selective surface behaviour. Then, as a number of SRR surface layers are vertically stacked in the propagation direction, the electromagnetic behaviour of this artificial magnetic structure becomes more complex including interactions between the resonant elements, not only in the lateral dimensions but also in the transverse propaga-tion direction. Some of these effects are not predicted by using an effective parameter approximation. The results of the transmission characteristics and the dispersion diagram for a unit cell problem are provided, together with a finite array situation. Experimental results currently on the way will be directly presented at the conference. (Hide)

Joongkwan Kim, Kyonggi Univ, South Korea
Sungsoo Nam, Kyonggi Univ, South Korea
Hoyong Kim, Kyonggi Univ, South Korea
Hongmin Lee, Kyonggi Univ, South Korea

This work describes the experimental observation of stop-bandwidth variation of EM wave shielding con-crete block which is made by using parallel resonators. The proposed 2-D parallel resonator consists of two cop-per plates, one via and filled with LTCC materials inside. The stop band properties are measured at 60 days and 1 year. When three resonators are embedded into a concrete block , the measured resonance frequency is 2.12GHz and the stop bandwidth is 215MHz at 60 days. After one year later measurement, the resonance frequency and stop bandwidth of the same concrete block is 1.97GHz and 90 MHz, respectively. (Hide)

Eduardo Jose Sartori, UNICAMP - State University of Campinas, Brazil
Hugo Enrique Hernández-Figueroa, UNICAMP - State University of Campinas, Brazil
Jose Eduardo Bertuzzo, Instituto de Pesquisas Eldorado, Brazil

This paper presents some simulated and experimental results about the defect effect in a dielectric metamaterial grid, using CPVC pipes. (Hide)

Yoonjae Lee, Queen Mary, University of London, United Kingdom
Yang Hao, Queen Mary, University of London, United Kingdom

We present a critical study on the figure-of-merit (FoM) associated with loss and bandwidth of the metamaterials based on resonant particles such as split-ring resonators (SRRs). The FoMs are calculated analytically and verified numerically for the metamaterials with various electrical sizes and densities for the constituent particles. High volumetric density and electrically large particles demonstrate superior FoMs for the construction of practical metamaterials. (Hide)

Olga Kostylyova, A.Ya. Usikov Institute of Radiophysics and Electronics of NAS of Ukraine, Ukraine
Alexey Bulgakov, A.Ya. Usikov Institute of Radiophysics and Electronics of NAS of Ukraine, Ukraine