Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes
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.
- Authors:
-
;
[1];
;
[1];
;
- School of Chemistry and Bio21 Institute, The University of Melbourne, Parkville, Victoria 3010, Australia
- Publication Date:
- Research Org.:
- Rice Univ., Houston, TX (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1426324
- Alternate Identifier(s):
- OSTI ID: 1508754
- Grant/Contract Number:
- SC0016534
- Resource Type:
- Published Article
- Journal Name:
- Journal of Physical Chemistry. C
- Additional Journal Information:
- Journal Name: Journal of Physical Chemistry. C Journal Volume: 122 Journal Issue: 12; Journal ID: ISSN 1932-7447
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Kirchner, 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., and Link, Stephan. Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes. United States: N. p., 2018.
Web. doi:10.1021/acs.jpcc.8b01398.
Kirchner, 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. Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes. United States. https://doi.org/10.1021/acs.jpcc.8b01398
Kirchner, 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., and Link, Stephan. Thu .
"Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes". United States. https://doi.org/10.1021/acs.jpcc.8b01398.
@article{osti_1426324,
title = {Snapshot Hyperspectral Imaging (SHI) for Revealing Irreversible and Heterogeneous Plasmonic Processes},
author = {Kirchner, Silke R. and Smith, Kyle W. and Hoener, Benjamin S. and Collins, Sean S. E. and Wang, Wenxiao and Cai, Yi-Yu and Kinnear, Calum and Zhang, Heyou and Chang, Wei-Shun and Mulvaney, Paul and Landes, Christy F. and Link, Stephan},
abstractNote = {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.},
doi = {10.1021/acs.jpcc.8b01398},
journal = {Journal of Physical Chemistry. C},
number = 12,
volume = 122,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2018},
month = {Thu Mar 01 00:00:00 EST 2018}
}
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https://doi.org/10.1021/acs.jpcc.8b01398
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