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A perfect absorber made of a graphene micro-ribbon metamaterial

2012; Optica Publishing Group; Volume: 20; Issue: 27 Linguagem: Inglês

10.1364/oe.20.028017

1094-4087

Rasoul Alaee, Mohamed Farhat, Carsten Rockstuhl, F. Lederer,

Antenna Design and Analysis

Metamaterial-based perfect absorbers promise many applica- tions. Perfect absorption is characterized by the complete suppression of transmission and reflection and complete dissipation of the incident energy by the absorptive meta-atoms. A certain absorption spectrum is usually assigned to a bulk medium and serves as a signature of the respective material. Here we show how to use graphene flakes as building blocks for perfect absorbers. Then, an absorbing meta-atom only consists of a molecular monolayer placed at an appropriate distance from a metallic ground plate. We show that the functionality of such device is intuitively and correctly explained by a Fabry-Perot model.