3D-Simulation of Topology-Induced Changes of Effective Permeability and Permittivity in Composite Materials

Hallouet, B.; Pelster, R.

doi:https://doi.org/10.1155/2007/80814

Journal of Nanomaterials

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Volume 2007 | Article ID 080814 | https://doi.org/10.1155/2007/80814

3D-Simulation of Topology-Induced Changes of Effective Permeability and Permittivity in Composite Materials

B. Hallouet¹and R. Pelster¹

Academic Editor: Christian Brosseau

Received15 Feb 2007

Revised11 May 2007

Accepted04 Jun 2007

Published14 Aug 2007

Abstract

We have performed 3D simulations of complex effective permittivity and permeability for random binary mixtures of cubic particles below the percolation threshold. We compare two topological classes that correspond to different spatial particle arrangements: cermet topology and aggregate topology. At a low filling factor of f=10%, where most particles are surrounded by matrix material, the respective effective material parameters are indistinguishable. At higher concentrations, a systematic difference emerges: cermet topology is characterized by lower effective permittivity and permeability values. A distinction between topological classes might thus be a useful concept for the analysis of real systems, especially in cases where no exact effective-medium model is available.

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Copyright

Copyright © 2007 B. Hallouet and R. Pelster. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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