Numéro |
J. Phys. I France
Volume 2, Numéro 9, September 1992
|
|
---|---|---|
Page(s) | 1765 - 1777 | |
DOI | https://doi.org/10.1051/jp1:1992243 |
J. Phys. I France 2 (1992) 1765-1777
Numerical simulation of random composite dielectrics. II. Simulations including dissipation
S. Stölzle, A. Enders and G. NimtzII. Physikalisches Institut der Universität zu Köln, 5000 Köln 41, Germany
(Received 21 May 1992, accepted 29 May 1992)
Abstract
A simulation model presented earlier for the permittivity of a composite material has now been
extended to include the dissipation of energy inside the medium. It is employed to calculate the
complex dielectric function of so-called effective media, i.e. randomly distributed lossy particles
in an insulating matrix. A general equation formulated before for lossless media proves to be valid
also for the dissipative mixtures investigated. However, simulations and experimental data show that
small deviations from random distribution can induce large deviations in the dielectric function.
Experiments are reported that agree with the simulation results.
© Les Editions de Physique 1992