ANALYSIS OF THREE-DIMENSIONAL GRAPHENE-BASED METAMATERIAL ABSORBERS USING BOUNDARY-INTEGRAL SPECTRAL ELEMENT METHOD

摘要

In terms of three dimensional graphene-based metamaterial absorbers, the paper introduces an efficient and accurate spectral element method. The method of moments with the spectral-domain periodic Green's function is used to truncate the computational domain above and below metal-dielectric-metal absorber with graphene. The method can deal with the ultra-thin graphene with high efficiency. With this method, a three-dimensional metal-dielectric-graphene-dielectric-metal structure is proposed and its optical property is investigated, with an efficiency of 24 times faster than finite-domain time-difference method.