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Numerical Study of D.C. Conductivity & A.C. Impedance for the Close-Packed Mixture of Hard Spheres

Published online by Cambridge University Press:  10 February 2011

D. G. Han  and
G. M. Choi
D. G. Han
Affiliation:
Department of Materials Sci. & Eng., Pohang University of Science and Technology, Pohang 790–784, Korea
G. M. Choi
Affiliation:
Department of Materials Sci. & Eng., Pohang University of Science and Technology, Pohang 790–784, Korea
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Abstract

Using a computational methodology, we studied average electrical properties, or, more specifically, d.c. conductivity and a.c. impedance spectra, of macroscopic mixtures of hard spheres numerically. Numerical results were compared with the calculated results of analytic equations which were generally used to describe the d.c. and a.c. electrical properties of composites. It is the purpose of this paper to provide information regarding to the geometrical arrangement effects. It was found that geometrical arrangement effects become more important as the sample size becomes smaller and the filling fraction closer to an effective percolation threshold.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 411: Symposium T – Electricaly-Based Microstructural Characterization , 1995 , 345
Copyright
Copyright © Materials Research Society 1996

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References

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