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Calculation of Local Fields for Clusters of Ellipsoids Within the T-Katrix Approach

  • Manuel Gomez (a1), Luis F. Fonseca (a2), Luis Cruz (a1) and William Vargas (a2)

Abstract

A T-matrix formalism is used to calculate local electric fields around clusters of prolate ellipsoids in the long wavelength regime. The calculations are performed as a function of interparticle distance as well as angle of orientation. The observed red shifts in the resonant wavelengths of the characteristic peaks are shown to obey an exponential relationship as a function of interparticle separation and a sinusoidal relationship as a function of angle of rotation of the ellipsoid. The behavior of the cluster is discussed and the two effects, of separation and rotation, are compared.

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