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The work presents a comprehensive methodology to determine the ShieldingEffectiveness (SE) of single-walled carbon nanotubes (SWCNTs)/polymernanocomposites. Here, an algorithm based on Ant Colony Optimization (ACO) wasemployed to determine the electrical conductivity ({\sigma}) of thesenanocomposites as a function of SWCNT concentration. Then, these {\sigma}values were used to compute the SE values as a function of frequency andconcentration. Specifically, a pseudo three-dimensional (3D) percolation modelwas developed to study the effects of random connectivity of SWCNTs to oneanother on the {\sigma} values of the nanocomposites. Both intrinsic andtunneling resistances were taken into account. The consequences of the presenceof both well-exfoliated and aggregated SWCNTs with varying lengths distributedinhomogeneously on {\sigma} and SE values were investigated.

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