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dc.contributor.authorMaghoul, Amir
dc.contributor.authorRostami, Ali
dc.contributor.authorBarzinjy, Azeez Abdullah
dc.contributor.authorMirtaheri, Peyman
dc.date.accessioned2021-12-07T09:56:07Z
dc.date.available2021-12-07T09:56:07Z
dc.date.created2021-11-21T20:08:43Z
dc.date.issued2021-11-19
dc.identifier.issn2076-3417
dc.identifier.urihttps://hdl.handle.net/11250/2833069
dc.description.abstractGraphene is a powerful 2-D matter with the capability of extraordinary transparency, and tunable conductivity is employed in emerging optoelectronics devices. In this article, the design of an electrically tunable graphene-based perfect terahertz absorber is proposed and evaluated numerically. The introduced structure is composed of two graphene layers with a sharp absorption peak in the terahertz band. These graphene layers are combline and stripline separated by the insulator substrate. The position of the absorption peak is tunable on the absorption band by means of manipulation in geometric parameters of the combline graphene layer. Furthermore, the intensity and frequency of the absorption peak can be flexibly modulated by varying Fermi potential of the combline graphene layer, which can be controlled through external DC voltages without the need of changing the geometry of the structure. It is shown that the absorption band can be tuned in the bandwidth from 5 to 15 in terahertz. The findings of this paper can promote a new perspective in designing perfect ribbon absorbers based on graphene properties that can be utilized for future photodetectors, solar cells, and thermal sensors with an absorption intensity above 2 × 105 (nm2) with narrow absorption bandwidth of 0.112 THz.en_US
dc.description.sponsorshipThis work was supported by the Optical/NIFR Lab of the Department of Mechanical, Electronics and Chemical Engineering (MEC), OsloMet—Oslo Metropolitan University.en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.relation.ispartofseriesApplied Sciences;Volume 11 / Issue 22
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectGrapheneen_US
dc.subjectPerfect absorbersen_US
dc.subjectPlasmonen_US
dc.subjectFermi energyen_US
dc.subjectTunable absorbersen_US
dc.titleElectrically Tunable Perfect Terahertz Absorber Using Embedded Combline Graphene Layeren_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2021 by the authors.en_US
dc.source.articlenumber10961en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.doihttps://doi.org/10.3390/app112210961
dc.identifier.cristin1956989
dc.source.journalApplied Sciencesen_US
dc.source.volume11en_US
dc.source.issue22en_US
dc.source.pagenumber1-13en_US


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