Experimental Verification of Plasmonic Cloaking at Microwave Frequencies
; Alù, A
Silveirinha, M. G.
; Engheta, N.
Physical Review Letters Vol. 103, Nº 153901, pp. 1 - 4, October, 2009.
ISSN (print): 1079-7114
ISSN (online): 0031-9007
Journal Impact Factor: 7,180 (in 2008)
Digital Object Identifier: 10.1103/PhysRevLett.103.153901
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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.