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Title: Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth

Abstract

An in-situ optical pump/x-ray probe technique has been used to study the size dependent lattice parameter of Pt nanoparticles subjected to picosecond duration optical laser pulses. The as-prepared Pt nanoparticles exhibited a contracted lattice parameter consistent with the response of an isolated elastic sphere to a compressive surface stress. During photo-thermally induced sintering and grain growth, however, the Pt lattice parameter did not evolve with the inverse particle size dependence predicted by simple surface stress models. Lastly, the observed behavior could be attributed to the combined effects of a compressive surface/interface stress and a tensile stress arising from intergranular material.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Institutes of Health (NIH); National Science Foundation (NSF)
OSTI Identifier:
1367892
Alternate Identifier(s):
OSTI ID: 1413389
Grant/Contract Number:
AC02-06CH11357; DMR140076; R24GM111072
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physics and Chemistry of Solids
Additional Journal Information:
Journal Volume: 108; Journal Issue: C; Journal ID: ISSN 0022-3697
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; Laser annealing; Intergranular stress; Lattice parameter; Nanostructured materials; Surface/interface stress

Citation Formats

Kelly, B.G., Loether, A., DiChiara, A. D., Henning, R., DeCamp, M. F., and Unruh, K.M.. Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth. United States: N. p., 2017. Web. doi:10.1016/j.jpcs.2017.04.009.
Kelly, B.G., Loether, A., DiChiara, A. D., Henning, R., DeCamp, M. F., & Unruh, K.M.. Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth. United States. doi:10.1016/j.jpcs.2017.04.009.
Kelly, B.G., Loether, A., DiChiara, A. D., Henning, R., DeCamp, M. F., and Unruh, K.M.. Thu . "Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth". United States. doi:10.1016/j.jpcs.2017.04.009. https://www.osti.gov/servlets/purl/1367892.
@article{osti_1367892,
title = {Lattice parameter evolution in Pt nanoparticles during photo-thermally induced sintering and grain growth},
author = {Kelly, B.G. and Loether, A. and DiChiara, A. D. and Henning, R. and DeCamp, M. F. and Unruh, K.M.},
abstractNote = {An in-situ optical pump/x-ray probe technique has been used to study the size dependent lattice parameter of Pt nanoparticles subjected to picosecond duration optical laser pulses. The as-prepared Pt nanoparticles exhibited a contracted lattice parameter consistent with the response of an isolated elastic sphere to a compressive surface stress. During photo-thermally induced sintering and grain growth, however, the Pt lattice parameter did not evolve with the inverse particle size dependence predicted by simple surface stress models. Lastly, the observed behavior could be attributed to the combined effects of a compressive surface/interface stress and a tensile stress arising from intergranular material.},
doi = {10.1016/j.jpcs.2017.04.009},
journal = {Journal of Physics and Chemistry of Solids},
number = C,
volume = 108,
place = {United States},
year = {Thu Apr 20 00:00:00 EDT 2017},
month = {Thu Apr 20 00:00:00 EDT 2017}
}

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  • The sintering of randomly oriented copper nanoparticles in the size range 4{endash}20 nm with a single crystal (001) copper substrate has been studied in real time using a novel {ital in situ} ultrahigh vacuum (UHV) transmission electron microscope. The particles were generated {ital in situ} using an UHV DC sputtering attachment and deposited directly onto an electron transparent copper foil inside the microscope. We demonstrate that these particles reorient upon heating to assume the same orientation as the substrate by a classical mechanism involving neck growth and grain boundary motion. {copyright} {ital 1997 American Institute of Physics.}
  • This paper reports the results of grain growth studies in polycrystalline metals: Al, Fe-[alpha], Fe-[gamma] (316L type steel), and NiMn2 alloy, characterized by significantly different values of a stacking fault energy. Detailed descriptions of changes in the geometry of grains have been obtained for the specimens recrystallized and annealed in a wide range of temperatures. The results are used to suggest some general tendencies observed during grain growth in polycrystalline materials.
  • No abstract prepared.
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