volume | PIER Journals

Abstract

This article discusses the effect of geometry on the surface plasmon resonances. The static dielectric polarizability of a sphere suffers a singularity when its permittivity relative to the surroundings is -2. This well-known resonance condition is changed when the shape of the particle is no longer a sphere. In this article the character of the resonances is studied,with a particular emphasis on a two-layer sphere.

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Dr. Ari Sihvola