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Science. 2006 Nov 10;314(5801):977-80. Epub 2006 Oct 19.

Metamaterial electromagnetic cloak at microwave frequencies.

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Department of Electrical and Computer Engineering, Duke University, Box 90291, Durham, NC 27708, USA.


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.

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