Graphene metascreen for designing compact infrared absorbers with enhanced bandwidth

Pai-Yen Chen, Mohamed Farhat, Hakan Bagci

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

We propose a compact, wideband terahertz and infrared absorber, comprising a patterned graphene sheet on a thin metal-backed dielectric slab. This graphene-based nanostructure can achieve a low or negative effective permeability, necessary for realizing the perfect absorption. The dual-reactive property found in both the plasmonic graphene sheet and the grounded highpermittivity slab introduces extra poles into the equivalent circuit model of the system, thereby resulting in a dual-band or broadband magnetic resonance that enhances the absorption bandwidth. More interestingly, the two-dimensional patterned graphene sheet significantly simplifies the design and fabrication processes for achieving resonant magnetic response, and allows the frequency-reconfigurable operation via electrostatic gating.
Original languageEnglish (US)
Pages (from-to)164002
JournalNanotechnology
Volume26
Issue number16
DOIs
StatePublished - Mar 31 2015

Fingerprint Dive into the research topics of 'Graphene metascreen for designing compact infrared absorbers with enhanced bandwidth'. Together they form a unique fingerprint.

Cite this