Tunable deep-subwavelength superscattering using graphene monolayers

摘要

In this Letter, we theoretically propose for the first time that graphenemonolayers can be used for superscatterer designs. We show that the scatteringcross section of the bare deep-subwavelength dielectric cylinder is markedlyenhanced by six orders of magnitude due to the excitation of the first-orderresonance of graphene plamons. By utilizing the tunability of the plasmonicresonance through tuning graphene's chemical potential, the graphenesuperscatterer works in a wide range of frequencies from several terahertz totens of terahertz.