Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes

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dc.citation.firstpage6865en_US
dc.citation.issueNumber12en_US
dc.citation.journalTitleThe Journal of Physical Chemistry Cen_US
dc.citation.lastpage6875en_US
dc.citation.volumeNumber122en_US
dc.contributor.authorKirchner, Silke R.en_US
dc.contributor.authorSmith, Kyle W.en_US
dc.contributor.authorHoener, Benjamin S.en_US
dc.contributor.authorCollins, Sean S.E.en_US
dc.contributor.authorWang, Wenxiaoen_US
dc.contributor.authorCai, Yi-Yuen_US
dc.contributor.authorKinnear, Calumen_US
dc.contributor.authorZhang, Heyouen_US
dc.contributor.authorChang, Wei-Shunen_US
dc.contributor.authorMulvaney, Paulen_US
dc.contributor.authorLandes, Christy F.en_US
dc.contributor.authorLink, Stephanen_US
dc.date.accessioned2018-07-16T21:54:27Zen_US
dc.date.available2018-07-16T21:54:27Zen_US
dc.date.issued2018en_US
dc.description.abstractPlasmon-mediated processes provide unique opportunities for selective photocatalysis, photovoltaics, and electrochemistry. Determining the influence of particle heterogeneity is an unsolved problem because often such processes introduce irreversible changes to the nanocatalysts and/or their surroundings. The challenge lies in monitoring heterogeneous nonequilibrium dynamics via the slow, serial methods that are intrinsic to almost all spectral acquisition methods with suitable spatial and/or spectral resolution. Here, we present a new metrology, snapshot hyperspectral imaging (SHI), that facilitates in situ readout of the tube lens image and first-order diffraction image of the dark-field scattering from many individual plasmonic nanoparticles to extract their respective spectra simultaneously. Evanescent wave excitation with a supercontinuum laser enabled signal-to-noise ratios greater than 100 with a time resolution of only 1 ms. Throughput of ∼100 simultaneous spectra was achieved with a highly ordered nanoparticle array, yielding a spectral resolution of 0.21 nm/pixel. Additionally, an alternative dark-field excitation geometry utilized a combination of a supercontinuum laser and a reflecting objective for polarization-controlled SHI. Using a simplified version of SHI, we temporally resolve on the millisecond time scale the heterogeneous kinetics of an electrochemical surface redox reaction for many individual gold nanoparticles simultaneously.en_US
dc.identifier.citationKirchner, Silke R., Smith, Kyle W., Hoener, Benjamin S., et al.. "Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes." <i>The Journal of Physical Chemistry C,</i> 122, no. 12 (2018) American Chemical Society: 6865-6875. https://doi.org/10.1021/acs.jpcc.8b01398.en_US
dc.identifier.doihttps://doi.org/10.1021/acs.jpcc.8b01398en_US
dc.identifier.urihttps://hdl.handle.net/1911/102451en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsThis is an open access article published under an ACS AuthorChoiceﾠLicense, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.en_US
dc.rights.urihttps://pubs.acs.org/page/policy/authorchoice_termsofuse.htmlen_US
dc.titleSnapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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