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

Published online by Cambridge University Press:  28 February 2011

Manuel Gomez
Affiliation:
Physics Department, University of Puerto Rico, Rio Piedras, Puerto Rico 00931
Luis F. Fonseca
Affiliation:
Escuela de Fisica, Universidad de Costa Rica, San Jose, Costa Rica
Luis Cruz
Affiliation:
Physics Department, University of Puerto Rico, Rio Piedras, Puerto Rico 00931
William Vargas
Affiliation:
Escuela de Fisica, Universidad de Costa Rica, San Jose, Costa Rica
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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.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

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