Show simple item record Urzhumov, YA Kundtz, NB Smith, DR Pendry, JB 2012-05-29T21:30:57Z 2011-02-01
dc.identifier.citation Journal of Optics, 2011, 13 (2)
dc.identifier.issn 2040-8978
dc.description.abstract We review several approaches to optical invisibility designed using transformation optics (TO) and optical conformal mapping (CM) techniques. TO is a general framework for solving inverse scattering problems based on mimicking spatial coordinate transformations with distributions of material properties. There are two essential steps in the design of TO media: first, a coordinate transformation that achieves some desired functionality, resulting in a continuous spatial distribution of constitutive parameters that are generally anisotropic; and, second, the reduction of the derived continuous constitutive parameters to a metamaterial that serves as a stepwise approximation. We focus here on the first step, discussing the merits of various TO strategies proposed for the long-sought 'invisibility cloak'-a structure that renders opaque objects invisible. We also evaluate the cloaking capabilities of structures designed by the related CM approach, which makes use of conformal mapping to achieve index-only material distributions. The performance of the various cloaks is evaluated and compared using a universal measure-the total (all-angle) scattering cross section. © 2011 IOP Publishing Ltd.
dc.description.sponsorship US Army Research Office (contract no. W911NF-09-1-0539) en_US
dc.language.iso en_US en_US
dc.relation.ispartof Journal of Optics
dc.relation.isversionof 10.1088/2040-8978/13/2/024002
dc.title Cross-section comparisons of cloaks designed by transformation optical and optical conformal mapping approaches
dc.type Journal Article
duke.description.endpage 024002-12 en_US
duke.description.startpage 024002 en_US
duke.description.volume 13 en_US
dc.relation.journal IOP Publishing Ltd.
pubs.issue 2
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Pratt School of Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Electrical and Computer Engineering
pubs.publication-status Published
pubs.volume 13
dc.identifier.eissn 2040-8986

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