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Originally published in Science Express on 19 October 2006
Science 10 November 2006:
Vol. 314. no. 5801, pp. 977 - 980
DOI: 10.1126/science.1133628
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Reports

Metamaterial Electromagnetic Cloak at Microwave Frequencies

D. Schurig,1 J. J. Mock,1 B. J. Justice,1 S. A. Cummer,1 J. B. Pendry,2 A. F. Starr,3 D. R. Smith1*

A recently published theory has suggested that a cloak of invisibility is in principle possible, at least over a narrow frequency band. We describe here the first practical realization of such a cloak; in our demonstration, a copper cylinder was "hidden" inside a cloak constructed according to the previous theoretical prescription. The cloak was constructed with the use of artificially structured metamaterials, designed for operation over a band of microwave frequencies. The cloak decreased scattering from the hidden object while at the same time reducing its shadow, so that the cloak and object combined began to resemble empty space.

1 Department of Electrical and Computer Engineering, Duke University, Box 90291, Durham, NC 27708, USA.
2 Department of Physics, The Blackett Laboratory, Imperial College, London SW7 2AZ, UK.
3 Sensor Metrix, 5695 Pacific Center Boulevard, San Diego, CA 92121, USA.

* To whom correspondence should be addressed. E-mail: drsmith{at}ee.duke.edu

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