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

doi:10.1063/1.3691242

dc.contributor.author	Urzhumov, Yaroslav A.
dc.contributor.author	Landy, Nathan
dc.contributor.author	Smith, David R.
dc.date.accessioned	2012-05-29T21:09:13Z
dc.date.available	2012-05-29T21:09:13Z
dc.date.issued	2012-03-06
dc.identifier.citation	J. Appl. Phys. 111, 053105 (2012)	en_US
dc.identifier.uri	http://hdl.handle.net/10161/5721
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.	en_US
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).	en_US
dc.language.iso	en_US	en_US
dc.publisher	American Institute of Physics	en_US
dc.relation.isversionof	10.1063/1.3691242	en_US
dc.subject	Electromagnetic cloak acoustic cloak isotropic medium	en_US
dc.title	Isotropic-medium three-dimensional cloaks for acoustic and electromagnetic waves	en_US
dc.type	Article	en_US
duke.description.endpage	053105-7	en_US
duke.description.startpage	053105	en_US
duke.description.volume	111	en_US
dc.relation.journal	Journal of Applied Physics