Isotropic-medium three-dimensional cloaks for acoustic and electromagnetic waves

dc.contributor.author

Urzhumov, Y

dc.contributor.author

Landy, N

dc.contributor.author

Smith, DR

dc.date.accessioned

2012-05-29T21:09:13Z

dc.date.issued

2012-03-01

dc.description.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.

dc.description.sponsorship

U.S. Navy through a subcontract with SensorMetrix (Contract No. N68335-11-C-0011); U.S. Army Research Office through a MURI (Grant No. W911NF-09-1-0539).

dc.identifier.issn

0021-8979

dc.identifier.uri

https://hdl.handle.net/10161/5721

dc.language.iso

en_US

dc.publisher

AIP Publishing

dc.relation.ispartof

Journal of Applied Physics

dc.relation.isversionof

10.1063/1.3691242

dc.relation.journal

Journal of Applied Physics

dc.title

Isotropic-medium three-dimensional cloaks for acoustic and electromagnetic waves

dc.type

Journal article

duke.description.volume

111

pubs.begin-page

053105

pubs.issue

5

pubs.organisational-group

Duke

pubs.organisational-group

Electrical and Computer Engineering

pubs.organisational-group

Pratt School of Engineering

pubs.publication-status

Published

pubs.volume

111

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