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Phys Rev Lett. 2008 Feb 15;100(6):063904. Epub 2008 Feb 15.

Extraordinary surface voltage effect in the invisibility cloak with an active device inside.

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  • 1The Electromagnetics Academy at Zhejiang University, Zhejiang University, Hangzhou 310058, China.

Abstract

The electromagnetic field solution for a spherical invisibility cloak with an active device inside is established. Extraordinary electric and magnetic surface voltages are induced at the inner boundary of a spherical cloak, which prevent electromagnetic waves from going out. The phase and handness of polarized waves obliquely incident on such boundaries are kept in the reflected waves. The surface voltages due to an electric dipole inside the concealed region are found equal to the auxiliary scalar potentials at the inner boundary, which consequently gain physical counterparts in this case.

PMID:
18352475
[PubMed]
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