Construction of invisibility cloaks of arbitrary shape and size using planar layers of metamaterials
Abstract
Transformation optics (TO) is a powerful tool for the design of electromagnetic and
optical devices with novel functionality derived from the unusual properties of the
transformation media. In general, the fabrication of TO media is challenging, requiring
spatially varying material properties with both anisotropic electric and magnetic
responses. Though metamaterials have been proposed as a path for achieving such complex
media, the required properties arising from the most general transformations remain
elusive, and cannot implemented by state-of-the-art fabrication techniques. Here,
we propose faceted approximations of TO media of arbitrary shape in which the volume
of the TO device is divided into flat metamaterial layers. These layers can be readily
implemented by standard fabrication and stacking techniques. We illustrate our approximation
approach for the specific example of a two-dimensional, omnidirectional "invisibility
cloak", and quantify its performance using the total scattering cross section as a
practical figure of merit. © 2012 American Institute of Physics.
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Journal articlePermalink
https://hdl.handle.net/10161/7570Published Version (Please cite this version)
10.1063/1.4729012Publication Info
Paul, O; Urzhumov, Y; Elsen, C; Smith, D; & Rahm, M (2012). Construction of invisibility cloaks of arbitrary shape and size using planar layers
of metamaterials. Journal of Applied Physics, 111(12). pp. 123106. 10.1063/1.4729012. Retrieved from https://hdl.handle.net/10161/7570.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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David R. Smith
James B. Duke Distinguished Professor of Electrical and Computer Engineering
Dr. David R. Smith is currently the James B. Duke Professor of Electrical and Computer
Engineering Department at Duke University. He is also Director of the Center for Metamaterials
and Integrated Plasmonics at Duke and holds the positions of Adjunct Associate Professor
in the Physics Department at the University of California, San Diego, and Visiting
Professor of Physics at Imperial College, London. Dr. Smith received his Ph.D. in
1994 in Physics from the University of California, San Dieg
Yaroslav A. Urzhumov
Adjunct Assistant Professor in the Department of Electrical and Computer Engineering
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<![endif]-->Dr. Urzhumov is Adjunct Assistant Professor of ECE at Duke University,
and also a Technologist at the Metamaterials Commercialization Center of Intellectual
Ventures. Previously a research faculty at Duke, he works on applied and theoretical
aspects of metama
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