Magnetic response from a composite of metal-dielectric particles in the visible range: T-matrix simulation

O. Zhuromskyy, V. Lomanets, U. Peschel

Abstract


The optical response of a particle composed of a dielectric core surrounded by a densely packed shell of small metal spheres is simulated with the superposition T-matrix method for realistic material parameters. In order to compute the electric and magnetic particle polarizabilities a single expansion T-matrix is derived from a particle centered T-matrix. Finally the permeability of a medium comprising such particles is found to deviate considerable from unity resulting in a noticeable optical response.

Keywords


t-matrix, metamaterials, magnetic resonators

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[DOI: 10.1478/C1V89S1P097] About DOI

Url Resolver: : http://dx.doi.org/10.1478/C1V89S1P097


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