title: Metamaterials at zero frequency.
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.
authors.affiliation: Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2AZ, UK.
authors.forename: B
authors.initials: B
authors.lastname: Wood
authors.forename: J B
authors.initials: JB
authors.lastname: Pendry