A formula for dielectric mixtures

Abstract

Dielectric properties of material mixtures are of importance in diagnostics, characterization and design of systems in various engineering fields. In this letter, we propose a new dielectric-mixture expression, which is based on the dielectric relaxation phenomena and the spectral density representation. The expression is tested on several composite systems. Results illustrate that the proposed expression can be used to obtain valuable structural informations in composites, even for highly filled, bi-percolating, systems. The proposed expression is an alternative to other existing homogenization formulas in the literature.