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The surface conductivity of two-dimensional (2-D) materials and thin conductive films is considered for surface plasmon (SP) excitation and propagation. It is shown that an ideal surface conductivity exists to maximize the SP field at a given position, based on a tradeoff relating to propagation loss and near-field excitation amplitude associated with the local density of photonic states. Dispersionless...
In this paper, we report on the analysis of transmissivity of electromagnetic waves through a stack of dielectric slabs loaded with atomically thin graphene sheets at low-terahertz frequencies. It is observed that the structure supports a series of bandpass regions separated by bandgap regions, similar to the case of stacked metallic meshes separated by dielectric slabs at microwave/THz frequencies...
A nonlocal homogenization model is proposed for the analysis of absorbing properties of mushroom-type structures with graphene patches at microwaves. It is shown that a previously used ABC at the connection of metallic vias to metallic patches is no longer applicable in the case of graphene patches, and a new ABC is derived, which takes into account semi-metal properties of graphene.
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