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All-Dielectric Resonant Metasurfaces with a Strong Toroidal Response

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Tuz, Vladimir R.; Khardikov, Vyacheslav V.; Kivshar, Yuri

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We demonstrate how to design all-dielectric metasurfaces with a strong axial toroidal response by arranging two types of nanodisks into asymmetric quadrumer clusters. This toroidal response is related to the existence of the trapped (dark) mode that appears due to a symmetry breaking in the cluster. We uncover a correlation between the existence of the toroidal response and asymmetry in the metasurface geometries, which originates from different diameters of nanodisks or notches introduced into...[Show more]

dc.contributor.authorTuz, Vladimir R.
dc.contributor.authorKhardikov, Vyacheslav V.
dc.contributor.authorKivshar, Yuri
dc.date.accessioned2020-01-14T02:45:14Z
dc.identifier.issn2330-4022
dc.identifier.urihttp://hdl.handle.net/1885/197173
dc.description.abstractWe demonstrate how to design all-dielectric metasurfaces with a strong axial toroidal response by arranging two types of nanodisks into asymmetric quadrumer clusters. This toroidal response is related to the existence of the trapped (dark) mode that appears due to a symmetry breaking in the cluster. We uncover a correlation between the existence of the toroidal response and asymmetry in the metasurface geometries, which originates from different diameters of nanodisks or notches introduced into nanodisks. Because of the unique field configuration of the toroidal mode, the proposed metasurface could serve as a platform for efficient light–matter interaction for enhanced absorption, nonlinear response, and sensing.
dc.description.sponsorshipV.R.T. and V.V.K. acknowledge the Jilin University for support; Y.S.K. acknowledges a support from the Australian Research Council.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Chemical Society
dc.rights© 2018 American Chemical Society
dc.sourceACS Photonics
dc.subjectmetamaterials
dc.subjectMie theory
dc.subjecttrapped modes
dc.subjectnanostructures
dc.subjectsubwavelength structures
dc.titleAll-Dielectric Resonant Metasurfaces with a Strong Toroidal Response
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume5
dc.date.issued2018-03-20
local.identifier.absfor020501 - Classical and Physical Optics
local.identifier.ariespublicationa383154xPUB10071
local.publisher.urlhttps://pubs.acs.org/
local.type.statusPublished Version
local.contributor.affiliationTuz, Vladimir R. , International Center of Future Science
local.contributor.affiliationKhardikov, Vyacheslav V., National Academy of Sciences of Ukraine
local.contributor.affiliationKivshar, Yuri, College of Science, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage1871
local.bibliographicCitation.lastpage1876
local.identifier.doi10.1021/acsphotonics.8b00098
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-11-25T07:19:36Z
local.identifier.scopusID2-s2.0-85047224685
CollectionsANU Research Publications

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