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Title: Resolving Nonequilibrium Shape Variations among Millions of Gold Nanoparticles

Journal Article · · ACS Nano
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  1. National Univ. of Singapore (Singapore); Max Planck Institute for the Structure and Dynamics of Matter (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
  2. Max Planck Institute for the Structure and Dynamics of Matter (Germany); Univ. of Hamburg (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; European XFEL, Schenefeld (Germany)
  3. European XFEL, Schenefeld (Germany)
  4. National Univ. of Singapore (Singapore); Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Diamond Light Source, Ltd.
  5. Uppsala Univ. (Sweden)
  6. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
  7. Arizona State Univ., Tempe, AZ (United States)
  8. Univ. of Hamburg (Germany); Univ. of Potsdam (Germany)
  9. Univ. of Hamburg (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
  10. Max Planck Institute for the Structure and Dynamics of Matter (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
  11. Univ. of Melbourne, VIC (Australia)
  12. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; Univ. of Hamburg (Germany)
  13. Univ. of Hamburg (Germany)
  14. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; European XFEL, Schenefeld (Germany)
  15. Max Planck Institute for the Structure and Dynamics of Matter (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; Univ. of Hamburg (Germany)
  16. Uppsala Univ. (Sweden); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  17. Univ. of Hamburg (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; Radboud Univ., Nijmegen (Netherlands)
  18. European XFEL, Schenefeld (Germany); Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Diamond Light Source, Ltd.; La Trobe Univ., Melbourne, VIC (Australia)
  19. National Univ. of Singapore (Singapore)

Nanoparticles, exhibiting functionally relevant structural heterogeneity, are at the forefront of cutting-edge research. Now, high-throughput single-particle imaging (SPI) with X-ray free-electron lasers (XFELs) creates opportunities for recovering the shape distributions of millions of particles that exhibit functionally relevant structural heterogeneity. To realize this potential, three challenges have to be overcome: (1) simultaneous parametrization of structural variability in real and reciprocal spaces; (2) efficiently inferring the latent parameters of each SPI measurement; (3) scaling up comparisons between 105 structural models and 106 XFEL-SPI measurements. Here, we describe how we overcame these three challenges to resolve the nonequilibrium shape distributions within millions of gold nanoparticles imaged at the European XFEL. These shape distributions allowed us to quantify the degree of asymmetry in these particles, discover a relatively stable “shape envelope” among nanoparticles, discern finite-size effects related to shape-controlling surfactants, and extrapolate nanoparticles’ shapes to their idealized thermodynamic limit. Ultimately, these demonstrations show that XFEL SPI can help transform nanoparticle shape characterization from anecdotally interesting to statistically meaningful.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2471133
Journal Information:
ACS Nano, Journal Name: ACS Nano Journal Issue: 24 Vol. 18; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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