Electric dipole-free interaction of visible light with pairs of subwavelength-size silver particles

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorGrahn, P.
dc.contributor.authorShevchenko, A.
dc.contributor.authorKaivola, M.
dc.contributor.departmentDepartment of Applied Physics
dc.date.accessioned2018-05-22T14:37:15Z
dc.date.available2018-05-22T14:37:15Z
dc.date.issued2012-07-13
dc.description.abstractIn subwavelength-sized particles, light-induced multipole moments of orders higher than the electric dipole are usually negligibly small, which allows for the light-matter interaction to be accurately treated within the electric dipole approximation. In this work we show that in a specially designed meta-atom, a disc metadimer, the electric quadrupole and magnetic dipole can be the only excitable multipoles. This condition is achieved in a narrow but tunable spectral range of visible light both for individual metadimers and for a periodic array of such particles. The electromagnetic fields scattered by the metadimers fundamentally differ from those created by electric dipoles. A metamaterial composed of such metadimers will therefore exhibit unusual optical properties.en
dc.description.versionPeer revieweden
dc.format.extent4
dc.format.extent1-4
dc.format.mimetypeapplication/pdf
dc.identifier.citationGrahn , P , Shevchenko , A & Kaivola , M 2012 , ' Electric dipole-free interaction of visible light with pairs of subwavelength-size silver particles ' , Physical Review B , vol. 86 , no. 3 , 035419 , pp. 1-4 . https://doi.org/10.1103/PhysRevB.86.035419en
dc.identifier.doi10.1103/PhysRevB.86.035419
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.otherPURE UUID: 5d468667-402a-4922-9353-088689f4d49d
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/5d468667-402a-4922-9353-088689f4d49d
dc.identifier.otherPURE LINK: http://link.aps.org/doi/10.1103/PhysRevB.86.035419
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/13707257/PhysRevB.86.035419.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/30932
dc.identifier.urnURN:NBN:fi:aalto-201805222372
dc.language.isoenen
dc.relation.ispartofseriesPHYSICAL REVIEW Ben
dc.relation.ispartofseriesVolume 86, issue 3en
dc.rightsopenAccessen
dc.subject.keywordelectric dipole-free interaction
dc.subject.keywordmetamaterials
dc.subject.keywordplasmonics
dc.titleElectric dipole-free interaction of visible light with pairs of subwavelength-size silver particlesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion

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