Absorption Spectroscopy of an Individual Fano Cluster

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dc.citation.firstpage6497
dc.citation.issueNumber10
dc.citation.journalTitleNano Letters
dc.citation.lastpage6503
dc.citation.volumeNumber16
dc.contributor.authorYorulmaz, Mustafa
dc.contributor.authorHoggard, Anneli
dc.contributor.authorZhao, Hangqi
dc.contributor.authorWen, Fangfang
dc.contributor.authorChang, Wei-Shun
dc.contributor.authorHalas, Naomi J.
dc.contributor.authorNordlander, Peter
dc.contributor.authorLink, Stephan
dc.contributor.orgLaboratory for Nanophotonics
dc.date.accessioned2017-01-30T22:36:08Z
dc.date.available2017-01-30T22:36:08Z
dc.date.issued2016
dc.description.abstractPlasmonic clusters can exhibit Fano resonances with unique and tunable asymmetric line shapes, which arise due to the coupling of bright and dark plasmon modes within each multiparticle structure. These structures are capable of generating remarkably large local electromagnetic field enhancements and should give rise to high hot carrier yields relative to other plasmonic nanostructures. While the scattering properties of individual plasmonic Fano resonances have been characterized extensively both experimentally and theoretically, their absorption properties, critical for hot carrier generation, have not yet been measured. Here, we utilize single-particle absorption spectroscopy based on photothermal imaging to distinguish between the radiative and nonradiative properties of an individual Fano cluster. In observing the absorption spectrum of individual Fano clusters, we directly verify the theoretical prediction that while Fano interference may be prominent in scattering, it is completely absent in absorption. Our results provide microscopic insight into the nature of Fano interference in systems of coupled plasmonic nanoparticles and should pave the way for the optimization of hot carrier production using plasmonic Fano clusters.
dc.identifier.citationYorulmaz, Mustafa, Hoggard, Anneli, Zhao, Hangqi, et al.. "Absorption Spectroscopy of an Individual Fano Cluster." <i>Nano Letters,</i> 16, no. 10 (2016) American Chemical Society: 6497-6503. http://dx.doi.org/10.1021/acs.nanolett.6b03080.
dc.identifier.doihttp://dx.doi.org/10.1021/acs.nanolett.6b03080
dc.identifier.urihttps://hdl.handle.net/1911/93823
dc.language.isoeng
dc.publisherAmerican Chemical Society
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society.
dc.subject.keywordFano resonance
dc.subject.keywordnear-field coupling
dc.subject.keywordphotothermal imaging
dc.subject.keywordsingle-particle spectroscopy
dc.subject.keywordSurface plasmons
dc.titleAbsorption Spectroscopy of an Individual Fano Cluster
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
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