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APS » Journals » Phys. Rev. Lett. » Volume 103 » Issue 15
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Phys. Rev. Lett. 103, 153901 (2009) [4 pages]

Experimental Verification of Plasmonic Cloaking at Microwave Frequencies with Metamaterials

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Brian Edwards1, Andrea Alù1,2, Mário G. Silveirinha1,3, and Nader Engheta1,*
1Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
2Department of Electrical and Computer Engineering, University of Texas at Austin Austin, Texas 78712, USA
3Department of Electrical Engineering, Universidade de Coimbra–Instituto de Telecomunicações, Portugal

Received 17 June 2009; revised 7 September 2009; published 6 October 2009

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.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.153901
DOI:
10.1103/PhysRevLett.103.153901
PACS:
42.82.Et, 52.40.Db, 52.40.Fd, 78.66.Sq

*Author to whom correspondence should be addressed.

engheta@ee.upenn.edu

 
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