{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["12(9)"],"submitter":["Luo W"],"pubmed_abstract":["Graphene is emerging as an ideal material for new-generation optoelectronic devices. In this paper, a novel graphene metasurface-based electrically switchable and tunable infrared light modulator has been proposed and theoretically studied. The functional modulator comprises a monolayer graphene sheet sandwiched in a Fabry-Perot (FP) like nanostructure consisting of a metal reflector, a dielectric spacer, and an ellipse patterned anisotropy antenna layer. As a result of the photon localization effect of the guided-mode resonance (GMR) in the FP structure, the graphene electroabsorption can be significantly enhanced to enable a high-performance light modulator. By fine-tuning the Fermi energy (<i>E</i> <sub>f</sub>) of graphene via controlling its bias-gate voltage, the proposed modulator can switch between a perfect absorber and a reflective polarization converter of high conversion efficiency (i.e., >90%) at 1550 nm. The conversion mechanism and the geometric dependences of the infrared light modulator have been investigated. We further demonstrated the tunability of the highly-efficient polarization converter over a broad spectrum by adjusting the real dispersion of <i>E</i> <sub>f</sub>. Our design concept provides an effective strategy for customizing novel optoelectronic devices by combining an electrically-tunable 2D material with a functional metasurface."],"journal":["Nanophotonics (Berlin, Germany)"],"pagination":["1797-1807"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11501403"],"repository":["biostudies-literature"],"pubmed_title":["Electrically switchable and tunable infrared light modulator based on functional graphene metasurface."],"pmcid":["PMC11501403"],"pubmed_authors":["Li X","Luo W","Abbasi SA","Ho HP","Yuan W","Zhu S"],"additional_accession":[]},"is_claimable":false,"name":"Electrically switchable and tunable infrared light modulator based on functional graphene metasurface.","description":"Graphene is emerging as an ideal material for new-generation optoelectronic devices. In this paper, a novel graphene metasurface-based electrically switchable and tunable infrared light modulator has been proposed and theoretically studied. The functional modulator comprises a monolayer graphene sheet sandwiched in a Fabry-Perot (FP) like nanostructure consisting of a metal reflector, a dielectric spacer, and an ellipse patterned anisotropy antenna layer. As a result of the photon localization effect of the guided-mode resonance (GMR) in the FP structure, the graphene electroabsorption can be significantly enhanced to enable a high-performance light modulator. By fine-tuning the Fermi energy (<i>E</i> <sub>f</sub>) of graphene via controlling its bias-gate voltage, the proposed modulator can switch between a perfect absorber and a reflective polarization converter of high conversion efficiency (i.e., >90%) at 1550 nm. The conversion mechanism and the geometric dependences of the infrared light modulator have been investigated. We further demonstrated the tunability of the highly-efficient polarization converter over a broad spectrum by adjusting the real dispersion of <i>E</i> <sub>f</sub>. Our design concept provides an effective strategy for customizing novel optoelectronic devices by combining an electrically-tunable 2D material with a functional metasurface.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Apr","modification":"2025-04-18T12:52:40.412Z","creation":"2025-04-06T22:14:46.683Z"},"accession":"S-EPMC11501403","cross_references":{"pubmed":["39634112"],"doi":["10.1515/nanoph-2023-0048"]}}