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Hybrid Metasurface Based Tunable Near-Perfect Absorber and Plasmonic Sensor

Aoni, Rifat Ahmmed; Rahmani, Mohsen; Xu, Lei; Miroshnichenko, Andrey

Description

We propose a hybrid metasurface-based perfect absorber which shows the near-unity absorbance and facilities to work as a refractive index sensor. We have used the gold mirror to prevent the transmission and used the amorphous silicon (a-Si) nanodisk arrays on top of the gold mirror which helps to excite the surface plasmon by scattering light through it at the normal incident. We numerically investigated the guiding performance. The proposed absorber is polarization independent and shows a...[Show more]

dc.contributor.authorAoni, Rifat Ahmmed
dc.contributor.authorRahmani, Mohsen
dc.contributor.authorXu, Lei
dc.contributor.authorMiroshnichenko, Andrey
dc.date.accessioned2021-05-11T23:28:04Z
dc.date.available2021-05-11T23:28:04Z
dc.identifier.issn1996-1944
dc.identifier.urihttp://hdl.handle.net/1885/232639
dc.description.abstractWe propose a hybrid metasurface-based perfect absorber which shows the near-unity absorbance and facilities to work as a refractive index sensor. We have used the gold mirror to prevent the transmission and used the amorphous silicon (a-Si) nanodisk arrays on top of the gold mirror which helps to excite the surface plasmon by scattering light through it at the normal incident. We numerically investigated the guiding performance. The proposed absorber is polarization independent and shows a maximum absorption of 99.8% at a 932 nm wavelength in the air medium. Considering the real applications, by varying the environments refractive indices from 1.33 to 1.41, the proposed absorber can maintain absorption at more than 99.7%, with a red shift of the resonant wavelength. Due to impedance matching of the electric and magnetic dipoles, the proposed absorber shows near-unity absorbance over the refractive indices range of 1.33 to 1.41, with a zero-reflectance property at a certain wavelength. This feature could be utilized as a plasmonic sensor in detecting the refractive index of the surrounding medium. The proposed plasmonic sensor shows an average sensitivity of 325 nm/RIU and a maximum sensitivity of 350 nm/RIU over the sensing range of 1.33 to 1.41. The proposed metadevice possesses potential applications in solar photovoltaic and photodetectors, as well as in organic and bio-chemical detection.
dc.description.sponsorshipThe authors acknowledge the funding support provided by the Australian Research Council (ARC). M.R. sincerely appreciates funding from ARC Discover Early Career Research Fellowship (DE170100250).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherMDPI Publishing
dc.rights© 2018 by the authors
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceMaterials
dc.subjectabsorber
dc.subjectplasmonics
dc.subjectmetasurfaces
dc.subjectoptical sensors
dc.subjectnanostructure
dc.titleHybrid Metasurface Based Tunable Near-Perfect Absorber and Plasmonic Sensor
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume11
dcterms.dateAccepted2018-06-25
dc.date.issued2018-06-27
local.identifier.absfor020501 - Classical and Physical Optics
local.identifier.ariespublicationa383154xPUB10201
local.publisher.urlhttps://www.mdpi.com/
local.type.statusPublished Version
local.contributor.affiliationAoni, Rifat Ahmmed, College of Science, ANU
local.contributor.affiliationRahmani, Mohsen, College of Science, ANU
local.contributor.affiliationXu, Lei, University of New South Wales
local.contributor.affiliationMiroshnichenko, Andrey, University of New South Wales
dc.relationhttp://purl.org/au-research/grants/arc/DE170100250
local.bibliographicCitation.issue7
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage10
local.identifier.doi10.3390/ma11071091
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2020-11-23T11:43:54Z
local.identifier.scopusID2-s2.0-85049164357
dcterms.accessRightsOpen Access
dc.provenanceThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
dc.rights.licenseCreative Commons Attribution (CC BY) license
CollectionsANU Research Publications

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