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Cloaking Mechanism with Antiphase Plasmonic Satellites

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

Physical Review B - Condensed Matter and Materials Physics Vol. 78, Nº 205109, pp. 1 - 9, November, 2008.

ISSN (print): 1098-0121
ISSN (online): 1098-0121

Journal Impact Factor: 3,736 (in 2014)

Digital Object Identifier: 10.1103/PhysRevB.78.205109

Abstract
In this work we theoretically demonstrate the possibility of cloaking a given object by surrounding it with a
finite collection of suitably dimensioned, discrete “antiphase” plasmonic scatterers. It is shown that the total scattering from the object may approximately be canceled by the currents induced on a finite number of the plasmonic “satellite” scatterers, effectively making the whole system invisible to an external observer. Unlike other approaches, the proposed solution allows one to cloak a given object in a noninvasive manner since the antiphase satellites, being finite in number, do not need to fully cover and be in direct contact with the cloaked object.