Isotropic-medium three-dimensional cloaks for acoustic and electromagnetic waves
Abstract
We propose a generalization of the two-dimensional eikonal-limit cloak derived from
a conformal transformation to three dimensions. The proposed cloak is a spherical
shell composed of only isotropic media; it operates in the transmission mode and requires
no mirror or ground plane. Unlike the well-known omnidirectional spherical cloaks,
it may reduce visibility of an arbitrary object only for a very limited range of observation
angles. In the short-wavelength limit, this cloaking structure restores not only the
trajectories of incident rays, but also their phase, which is a necessary ingredient
to complete invisibility. Both scalar-wave (acoustic) and transverse vector-wave (electromagnetic)
versions are presented. © 2012 American Institute of Physics.
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https://hdl.handle.net/10161/5721Published Version (Please cite this version)
10.1063/1.3691242Publication Info
(2012). Isotropic-medium three-dimensional cloaks for acoustic and electromagnetic waves.
Journal of Applied Physics, 111(5). pp. 053105. 10.1063/1.3691242. Retrieved from https://hdl.handle.net/10161/5721.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 D
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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