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Abstract: The electromagnetic field solution for a spherical invisibility cloak with anactive device inside is established. Extraordinary electric and magneticsurface voltages are induced at the inner boundary of a spherical cloak, whichprevent electromagnetic waves from going out. The phase and handness ofpolarized waves obliquely incident on such boundaries is kept in the reflectedwaves. The surface voltages due to an electric dipole inside the concealedregion are found equal to the auxiliary scalar potentials at the innerboundary, which consequently gain physical counterparts in this case.



Author: Baile Zhang, Hongsheng Chen, Bae-Ian Wu, Jin Au Kong

Source: https://arxiv.org/







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