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arXiv · 1809.03212

Simulation study of the electrical tunneling network conductivity of suspensions of hard spherocylinders

Arshia Atashpendar·Sarthak Arora·Alexander D. Rahm·Tanja Schilling
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Abstract

Using Monte Carlo simulations, we investigate the electrical conductivity of networks of hard rods as a function of the volume fraction for two tunneling conductance models. For a simple, orientationally independent tunneling model, we observe non-monotonic behaviour of the bulk conductivity as a function of volume fraction at the isotropic-nematic transition. However, this effect is lost if one allows for anisotropic tunneling. We also compute the mesh number of the Kirchhoff network, which turns out to be a simple alternative to the computationally expensive conductivity of large systems in order to get a qualitative estimate.

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Arshia Atashpendar, Sarthak Arora, Alexander D. Rahm, Tanja Schilling. 2018-12-20. Simulation study of the electrical tunneling network conductivity of suspensions of hard spherocylinders. https://doi.org/10.1103/physreve.98.062611

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