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dc.contributor.authorKirchner, Silke R.
Smith, Kyle W.
Hoener, Benjamin S.
Collins, Sean S.E.
Wang, Wenxiao
Cai, Yi-Yu
Kinnear, Calum
Zhang, Heyou
Chang, Wei-Shun
Mulvaney, Paul
Landes, Christy F.
Link, Stephan
dc.date.accessioned 2018-07-16T21:54:27Z
dc.date.available 2018-07-16T21:54:27Z
dc.date.issued 2018
dc.identifier.citation Kirchner, Silke R., Smith, Kyle W., Hoener, Benjamin S., et al.. "Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes." The Journal of Physical Chemistry C, 122, no. 12 (2018) American Chemical Society: 6865-6875. https://doi.org/10.1021/acs.jpcc.8b01398.
dc.identifier.urihttps://hdl.handle.net/1911/102451
dc.description.abstract Plasmon-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.
dc.language.iso eng
dc.publisher American Chemical Society
dc.rights This 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.
dc.rights.urihttps://pubs.acs.org/page/policy/authorchoice_termsofuse.html
dc.title Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes
dc.type Journal article
dc.citation.journalTitle The Journal of Physical Chemistry C
dc.citation.volumeNumber 122
dc.citation.issueNumber 12
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1021/acs.jpcc.8b01398
dc.type.publication publisher version
dc.citation.firstpage 6865
dc.citation.lastpage 6875


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