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arXiv · 1712.08188

A Holistic Approach to Evaluate EMI Shielding Characteristics of Carbon Nanotube-based Polymer Composites

M. Sidhaarth·R. Suriyanarayanan·G. Srigovindan·R. Thiruvengadathan
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Abstract

The work presents a comprehensive methodology to determine the Shielding Effectiveness (SE) of single-walled carbon nanotubes (SWCNTs)/polymer nanocomposites. Here, an algorithm based on Ant Colony Optimization (ACO) was employed to determine the electrical conductivity ({\sigma}) of these nanocomposites as a function of SWCNT concentration. Then, these {\sigma} values were used to compute the SE values as a function of frequency and concentration. Specifically, a pseudo three-dimensional (3D) percolation model was developed to study the effects of random connectivity of SWCNTs to one another on the {\sigma} values of the nanocomposites. Both intrinsic and tunneling resistances were taken into account. The consequences of the presence of both well-exfoliated and aggregated SWCNTs with varying lengths distributed inhomogeneously on {\sigma} and SE values were investigated.

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M. Sidhaarth, R. Suriyanarayanan, G. Srigovindan, R. Thiruvengadathan. 2017-12-05. A Holistic Approach to Evaluate EMI Shielding Characteristics of Carbon Nanotube-based Polymer Composites. https://arxiv.org/abs/1712.08188

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