APS March Meeting 2014
Volume 59, Number 1
Monday–Friday, March 3–7, 2014;
Denver, Colorado
Session M31: Focus Session: Computational Discovery and Design of New Materials IV
11:15 AM–2:15 PM,
Wednesday, March 5, 2014
Room: 607
Sponsoring
Units:
DMP DCOMP
Chair: Manh Cuong Nguyen, Ames Laboratory
Abstract ID: BAPS.2014.MAR.M31.1
Abstract: M31.00001 : Design of Metamaterials for control of electromagnetic waves
11:15 AM–11:51 AM
Preview Abstract
Abstract
Author:
Thomas Koschny
(Ameslab - DOE, Iowa State University)
Metamaterials are artificial effective media supporting propagating waves
that derive their properties form the average response of deliberately
designed and arranged, usually resonant scatterers with structural
length-scales much smaller than the wavelength inside the material.
Electromagnetic metamaterials are the most important implementation of
metamaterials, which are made from deeply sub-wavelength electric, magnetic
and chiral resonators and can be designed to work from radio frequencies all
the way to visible light. Metamaterials have been major new development in
physics and materials science over the last decade and are still attracting
more interest as they enable us to create materials with unique properties
like negative refraction, flat and super lenses, impedance matching
eliminating reflection, perfect absorbers, deeply sub-wavelength sized wave
guides and cavities, tunability, enhanced non-linearity and gain, chirality
and huge optical activity, control of Casimir forces, and spontaneous
emission, etc.
In this talk, I will discuss the design, numerical simulation, and
mathematical modeling of metamaterials. I will survey the current state of
the art and discuss challenges, possible solutions and perspectives. In
particular, the problem of dissipative loss and their possible compensation
by incorporating spatially distributed gain in metamaterials. If the gain
sub-system is strongly coupled to the sub-wavelength resonators of the
metamaterial loss compensation and undamping of the resonant response of the
metamaterials can occur. I will explore new, alternative dielectric low loss
resonators for metamaterials as well as the potential of new conducting
materials such as Graphene to replace metals as the conducting material in
resonant metamaterials. Two dimensional metamaterials or metasurfaces,
implementations of effective electromagnetic current sheets in which both
electric and magnetic sheet conductivities are controlled by the average
response of sub-wavelength local resonators, emerge as simpler
implementation of many of the unique properties of metamaterials. I will
discuss a few novel examples how these metamaterials can be used for
dispersion engineering, and beam shaping.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.MAR.M31.1