The Workshop on Metamaterials will be held on 14th February 2011. This single-day workshop will include plenary sessions given by world-renown metamaterial researchers who will review the state-of-the-art and discuss the latest advancements in their respective areas ranging from electromagnetic metamaterials,
microwave and antenna applications, acoustic metamaterials and
transformation optics.
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Alexander V. Kildishev
Purdue University, School of Electrical and Computer Engineering, Birck Nanotechnology Center, USA.
"Active Nanoplasmonics: Experimental and Numerical Studies at Purdue"
Loss-free and active nanoplasmonics can enable new, important applications including advanced sensing and imaging devices, nanoscale lasers, etc.
This talk reviews and introduces recent methods for enhancing the performance of gain-assisted optical metamaterials and describes various useful applications of this type of nanostructured optical elements.
To increase the throughput, which is essential for practical engineering,
the losses in the dispersive plasmonic elements must be compensated.
Only then could the resolution of hyperlenses and near-field super-lenses
be enhanced, for example. Understanding the interaction of light with
optical gain materials is therefore of great importance, especially
in metal-dielectric nanostructures.
A loss-free and active metamaterial in the visible range has been recently
experimentally demonstrated at the Birk Nanotechnology Center at Purdue;
these experiments have been supported by frequency-domain finite element
analysis and the appropriate retrieval of the effective bianisotropic properties
of the fabricated sample.
Our recent progress in this field will be reviewed with a new focus on
time-domain modeling and experimental feedback, including the experiment-fitted
parameters for (i) gain media - the 4-level system of auxiliary differential equations
(ADE), and (ii) noble metals - the general dispersive material (GDM) model, which
are imperative for accurate time-domain simulations of active nanoplasmonic devices.
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Mário G. Silveirinha
Instituto de Telecomunicações, Portugal.
"Metamaterials: manipulating the electromagnetic field in a subwavelength spatial scale"
In this talk, I will present an overview of my research work on this topic, and discuss the characterization of metamaterials using effective medium theory. I will highlight applications and salient features of metamaterials formed by arrays of metallic wires. In particular, I will talk about applications such as subwavelength imaging, reconstruction of the near-field, detection of subwavelength targets, tunneling using near zero permittivity materials, anomalous dispersion of light with low loss, and the possibility of tailoring the strength of the Casimir force.
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Ricardo Marqués
Universidad de Sevilla, Spain.
"Bulk resonant ring metamaterials"
In this talk I will present the fundamentals of bulk resonant ring metamaterials (RRM). Magnetic metamaterials made of resonant rings will be discussed, and some basic design rules provided. Homogenization (including spatial dispersion) of three-dimensional resonant ring latices will be reviewed, with emphasis in isotropic designs. Edge effects in finite size metamaterial samples will be briefly discussed. Finally, possible applications and future trends will be reviewed.
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Ferran Martín
Universitat Autònoma de Barcelona, Spain.
"Recent advances on the applications of artificial lines based on split rings"
Our recent progress on the design and applications of artificial transmission lines based on split rings will be reported in this presentation. Essentially the talk will be focussed on composite right/left handed (CRLH) lines and generalized CRLH lines implemented by means of open split rings. We will highlight the interest of these lines to the design of multiband components and filters in planar technology, and the advantages and limitations will be discussed.
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Mario Sorolla
Universidad Pública de Navarra, Spain.
"Millimeter Wave and Terahertz Metamaterials and Devices based upon Extraordinary Transmission"
Here, I will present a thorough list of devices based on extraordinary transmission and metamaterials will be presented. Design as well as measurement procedures will be shown, both in millimetre-waves and terahertz. The range of potential applications is wide: negative refracting prisms, metamaterial lenses, spatial filter-ing structures, polarisation devices, etc.
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José Sánchez-Dehesa
Wave Phenomena Group, Departamento de Ingeniería Electrónica, Universitat Politècnica de València, Spain.
"Metamaterials based on Phononic and Photonic Crystals"
I will review recent results on the topic of wave propagation through periodic arrays of EM and sonic scatterers. These structures define in the homogenization limit (i.e., when the lattice separation is much lower than the wave wavelength) a class of metamaterials with extraordinary properties. A homogenization method based on multiple scattering theory has been developed and semi analytical expressions for the effective parameters will be reported. Metamaterials with anisotropic parameters are also particularly interesting because they allow to build broadband photonic and acoustic cloaks and a new type of crystals named Radial Wave Crystals, which are radially periodic structures that verify the Bloch theorem.
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Anatoly Zayats
King's College London, United Kingdom.
"Plasmonic nanorod metamaterials"
A large number photonic and nanophotonic applications, including negative index engineering, superlensing, optical cloaking and passive and active integrated photonic circuitry rely on plasmonic metamaterials. One promising class of such metamaterials is based on plasmonic nanorod arrays. Optical properties of the arrays are determined by strong interaction between plasmonic resonances of the individual nanorods and are due to collective plasmonic response of the closely spaced nanorods in the array. The resonant frequency of such collective plasmonic excitations and spatial variation of the associated electromagnetic field distribution can be designed by modifying the nanorod array parameters. Thus the opportunity exists to control the optical response of the metamaterial and tune their optical properties using applied electric field or all-optically with appropriately suited nonlinear materials as a matrix. In this talk optical properties of such nanorod arrays will be discussed and their applications in nanophotnics and biosensing will be considered.
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Thomas Philbin
University of St Andrews, United Kingdom.
"Geometry and Light: Recipes For Remarkable Metamaterial Devices"
The science of metamaterials is in one respect a search for materials that allow complete control of electromagnetic fields. But the development of metamaterials has also given new force to a centuries-old question: assuming we had such complete control of light, what could we do with it? The mathematical tools of geometry provide a powerful way of exploring this question. Transformation optics has given recipes for cloaking devices and other effects achieved by effective coordinate transformations. But curved geometries can also be implemented by metamaterials, where the resulting device does not perform a coordinate transformation. As well as curved spaces, curved space-times can be constructed for light. I will describe the geometrical view of light in media, some remarkable optical devices and effects, and the geometry behind them.
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