Eigenmode Tomography of Surface Charge Oscillations of Plasmonic Nanoparticles by Electron Energy Loss Spectroscopy

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dc.citation.firstpage1628
dc.citation.issueNumber11
dc.citation.journalTitleACS Photonics
dc.citation.lastpage1635
dc.citation.volumeNumber2
dc.contributor.authorCollins, Sean M.
dc.contributor.authorRinge, Emilie
dc.contributor.authorDuchamp, Martial
dc.contributor.authorSaghi, Zineb
dc.contributor.authorDunin-Borkowski, Rafal E.
dc.contributor.authorMidgley, Paul A.
dc.date.accessioned2016-01-19T19:19:42Z
dc.date.available2016-01-19T19:19:42Z
dc.date.issued2015
dc.description.abstractPlasmonic devices designed in three dimensions enable careful tuning of optical responses for control of complex electromagnetic interactions on the nanoscale. Probing the fundamental characteristics of the constituent nanoparticle building blocks is, however, often constrained by diffraction-limited spatial resolution in optical spectroscopy. Electron microscopy techniques, including electron energy loss spectroscopy (EELS), have recently been developed to image surface plasmon resonances qualitatively at the nanoscale in three dimensions using tomographic reconstruction techniques. Here, we present an experimental realization of a distinct method that uses direct analysis of modal surface charge distributions to reconstruct quantitatively the three-dimensional eigenmodes of a silver right bipyramid on a metal oxide substrate. This eigenmode tomography removes ambiguity in two-dimensional imaging of spatially localized plasmonic resonances, reveals substrate-induced mode degeneracy breaking in the bipyramid, and enables EELS for the analysis not of a particular electron-induced response but of the underlying geometric modes characteristic of particle surface plasmons.
dc.identifier.citationCollins, Sean M., Ringe, Emilie, Duchamp, Martial, et al.. "Eigenmode Tomography of Surface Charge Oscillations of Plasmonic Nanoparticles by Electron Energy Loss Spectroscopy." <i>ACS Photonics,</i> 2, no. 11 (2015) American Chemical Society: 1628-1635. http://dx.doi.org/10.1021/acsphotonics.5b00421.
dc.identifier.doihttp://dx.doi.org/10.1021/acsphotonics.5b00421
dc.identifier.urihttps://hdl.handle.net/1911/87878
dc.language.isoeng
dc.publisherAmerican Chemical Society
dc.rightsThis is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
dc.rights.urihttp://pubs.acs.org/page/policy/authorchoice_termsofuse.html
dc.subject.keywordsurface plasmon
dc.subject.keywordEELS
dc.subject.keywordtomography
dc.subject.keywordnanoparticles
dc.titleEigenmode Tomography of Surface Charge Oscillations of Plasmonic Nanoparticles by Electron Energy Loss Spectroscopy
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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