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Experimental Verification of Plasmonic Cloaking at Microwave Frequencies

Edwards, ; Alù, A ; Silveirinha, M. G. ; Engheta, N.

Physical Review Letters Vol. 103, Nº 153901, pp. 1 - 4, October, 2009.

ISSN (print): 0031-9007
ISSN (online): 0031-9007

Journal Impact Factor: 7,180 (in 2008)

Digital Object Identifier: 10.1103/PhysRevLett.103.153901

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Abstract
Plasmonic cloaking is a scattering-cancellation technique based on the local negative polarizability of metamaterials. Here we report its first experimental realization and measurement at microwave frequencies.
An array of metallic fins embedded in a high-permittivity fluid has been used to create a metamaterial plasmonic shell capable of cloaking a dielectric cylinder, yielding over 75% reduction of total scattering width.