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arXiv · 0810.3153

Optimal Percolation of Disordered Segregated Composites

N. Johner·C. Grimaldi·T. Maeder·P. Ryser
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Abstract

We evaluate the percolation threshold values for a realistic model of continuum segregated systems, where random spherical inclusions forbid the percolating objects, modellized by hard-core spherical particles surrounded by penetrable shells, to occupy large regions inside the composite. We find that the percolation threshold is generally a non-monotonous function of segregation, and that an optimal (i. e., minimum) critical concentration exists well before maximum segregation is reached. We interpret this feature as originating from a competition between reduced available volume effects and enhanced concentrations needed to ensure percolation in the highly segregated regime. The relevance with existing segregated materials is discussed.

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N. Johner, C. Grimaldi, T. Maeder, P. Ryser. 2008-10-17. Optimal Percolation of Disordered Segregated Composites. https://doi.org/10.1103/physreve.79.020104

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