Abstract

The employment of epsilon-near-zero material (ENZM) has been demonstrated to be the key to cloak designs. Furthermore, methods for designing such materials at any frequency have been discussed. It has been shown that an ENZM may be manufactured for any wavelength where the real part of silver permittivity is negative. Depending on the frequency, the ENZM is a dielectric matrix filled with silver inclusion or silver foam. The losses in the ENZM may be even smaller than the losses in silver at the wavelength where real part of silver permittivity is equal to zero.

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