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dc.contributor.authorIslam, M.en
dc.contributor.authorSultana, J.en
dc.contributor.authorBiabanifard, M.en
dc.contributor.authorVafapour, Z.en
dc.contributor.authorNine, M.en
dc.contributor.authorDinovitser, A.en
dc.contributor.authorCordeiro, C.en
dc.contributor.authorNg, B.-.H.en
dc.contributor.authorAbbott, D.en
dc.identifier.citationCarbon, 2020; 158:559-567en
dc.description.abstractWe propose a plasmon induced tunable metasurface for multiband superabsorption and terahertz sensing. It consists of a graphene sheet that facilitates perfect absorption where the graphene pattern at the top layer creates an enhanced evanescent wave that facilitates the metasurface to work as a sensor. The modelling and numerical analysis are carried out using Finite Element Method (FEM) based software, CST microwave studio where a genetic algorithm (GA) is used to optimize the geometric parameters, and metasurface tunability is achieved via an external gate voltage on the graphene. By exploiting graphene’s tunable properties we demonstrate a multiband superabsorption spectra having a maximum absorption of 99.7% in a frequency range of 0.1–2.0 THz that also maintain unique optical performance over a wide incidence angle. Further results show how the superabsorber can be used as a sensor, where the resonance frequency shifts with the refractive index of the surrounding environment.en
dc.description.statementofresponsibilityM.S. Islam, J. Sultana, M. Biabanifard, Z. Vafapour, M.J. Nine, A. Dinovitser, C.M.B. Cordeiro, B.W.-H. Ng, D. Abbotten
dc.rights© 2019 Elsevier Ltd. All rights reserved.en
dc.subjectGraphene; metasurface; absorber; terahertz sensoren
dc.titleTunable localized surface plasmon graphene metasurface for multiband superabsorption and terahertz sensingen
dc.typeJournal articleen
pubs.library.collectionElectrical and Electronic Engineering publicationsen
dc.identifier.orcidIslam, M. [0000-0003-0578-4732]en
dc.identifier.orcidNine, M. [0000-0002-5740-8627]en
dc.identifier.orcidNg, B.-.H. [0000-0002-8316-4996]en
dc.identifier.orcidAbbott, D. [0000-0002-0945-2674]en
Appears in Collections:Electrical and Electronic Engineering publications

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