Graphene metascreen for designing compact infrared absorbers with enhanced bandwidth

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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
Issue number16
StatePublished - Mar 31 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: PYC would like to thank the KAUST Winter Enrichment Program (WEP). This work was partially funded by King Abdulaziz City for Science and Technology's TIC (Technology Innovation Center) for Solid-state Lighting at KAUST.


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