Abstract
Graphene, a two-dimensional material made of carbon atoms arranged in a honeycomb lattice, has attracted enormous attention since its experimental realization in 2004 [1] due to its unique mechanical, thermal, electrical and optical properties. Particularly in the THz spectrum, graphene predominantly exhibits a Drude-like response due to its easily generated and controlled free carriers and therefore is considered a suitable platform for dynamically tunable metasurface components [2]. Such an example, are the so called thin film absorbers that are structures capable of absorbing all power of incident electromagnetic waves. They are used as non-reflective covering layers for shielding against electromagnetic radiation and minimization of backscattering from electromagnetic large structures. Within the concept of metasurfaces, thin film absorbers, are usually implemented by placing a lossy material on the top of a perfectly conducting metallic plate [3].
© 2019 IEEE
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