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J Phys Condens Matter. 2007 Feb 21;19(7):076208. doi: 10.1088/0953-8984/19/7/076208. Epub 2007 Feb 2.

Metamaterials at zero frequency.

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1
Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2AZ, UK.

Abstract

We investigate the problem of designing metamaterial structures which operate at very low frequencies. As an example, we consider the case of a DC magnetic cloak, which requires a variable, anisotropic magnetic permeability with both paramagnetic and diamagnetic components. We show that a structure based on superconducting components is the key to diamagnetism at low frequencies, and present a metamaterial design which meets the requirements of the cloak.

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