Modeling graphene macroscopic and microscopic conductivity in the sub-cell FDTD method

Abstract

This paper addresses a competent approach to obtain a computational model and a simulation fashion of graphene surface conductivity using sub-cell (SC) framework in the finite-difference time-domain (FDTD) method that incorporate to macroscopic and microscopic contributions. The FDTD update equations of graphene macroscopic and microscopic surface conductivity for dispersive sub-layer inside the Yee's cell are developed. Mathematical identity, numerical results and model expression are presented of the proposed approach.