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Phys. Rev. B 78, 205109 (2008) [9 pages]

Cloaking mechanism with antiphase plasmonic satellites

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Mário G. Silveirinha1,2, Andrea Alù1,3, and Nader Engheta1,*
1Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
2Department of Electrical Engineering–Instituto de Telecomunicações, Universidade de Coimbra, 3030 Coimbra, Portugal
3Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, Texas 78712-0240, USA

Received 20 May 2008; revised 14 October 2008; published 12 November 2008

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.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.78.205109
DOI:
10.1103/PhysRevB.78.205109
PACS:
78.66.Sq, 41.20.Jb, 42.79.−e

*Author to whom correspondence should be addressed; engheta@ee.upenn.edu