Graphene-Based Metamaterial Absorbers

This chapter introduces the basic concept and the main research advance of graphene-based metamaterial absorbers. First of all, we review the development of graphene and summarize the modeling methods of graphene-based Salisbury screen, Jaumann absorber, and frequency selective surface (FSS) absorber. Then we demonstrate both the microwave absorption and near-field radiation behavior of large-area multilayer chemical vapor deposition (CVD) graphene. In detail, we present several graphene-based metamaterial absorbers, including graphene-based transparent shielding enclosure, which can suppress unwanted cavity resonant modes, graphene-based quasi-transverse electromagnetic (TEM) wave microstrip absorber that prevents the transmission line main mode, graphene-based microwave (MW) FSS absorber that has a low profile and flexible or tunable wideband absorption, graphene-based millimeter wave (MMW) optically transparent absorber which may absorb plane wave energy with broad bandwidth, and graphene-based switchable THz absorber that enables fast electrical controlling of terahertz absorption and reflection. The various potential applications of graphene in the field of electromagnetic wave absorption are revealed and validated.