Absorption Spectroscopy of an Individual Fano Cluster

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dc.citation.firstpage6497en_US
dc.citation.issueNumber10en_US
dc.citation.journalTitleNano Lettersen_US
dc.citation.lastpage6503en_US
dc.citation.volumeNumber16en_US
dc.contributor.authorYorulmaz, Mustafaen_US
dc.contributor.authorHoggard, Annelien_US
dc.contributor.authorZhao, Hangqien_US
dc.contributor.authorWen, Fangfangen_US
dc.contributor.authorChang, Wei-Shunen_US
dc.contributor.authorHalas, Naomi J.en_US
dc.contributor.authorNordlander, Peteren_US
dc.contributor.authorLink, Stephanen_US
dc.contributor.orgLaboratory for Nanophotonicsen_US
dc.date.accessioned2017-01-30T22:36:08Zen_US
dc.date.available2017-01-30T22:36:08Zen_US
dc.date.issued2016en_US
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.en_US
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.en_US
dc.identifier.doihttp://dx.doi.org/10.1021/acs.nanolett.6b03080en_US
dc.identifier.urihttps://hdl.handle.net/1911/93823en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
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.en_US
dc.subject.keywordFano resonanceen_US
dc.subject.keywordnear-field couplingen_US
dc.subject.keywordphotothermal imagingen_US
dc.subject.keywordsingle-particle spectroscopyen_US
dc.subject.keywordSurface plasmonsen_US
dc.titleAbsorption Spectroscopy of an Individual Fano Clusteren_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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