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Title: Collision-spike sputtering of Au nanoparticles

Abstract

Ion irradiation of nanoparticles leads to enhanced sputter yields if the nanoparticle size is of the order of the ion penetration depth. While this feature is reasonably well understood for collision-cascade sputtering, we explore it in the regime of collision-spike sputtering using molecular-dynamics simulation. For the particular case of 200-keV Xe bombardment of Au particles, we show that collision spikes lead to abundant sputtering with an average yield of 397 ± 121 atoms compared to only 116 ± 48 atoms for a bulk Au target. Only around 31 % of the impact energy remains in the nanoparticles after impact; the remainder is transported away by the transmitted projectile and the ejecta. As a result, the sputter yield of supported nanoparticles is estimated to be around 80 % of that of free nanoparticles due to the suppression of forward sputtering.

Authors:
 [1];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. Kaiserslautern, Kaiserslautern (Germany)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1222631
Alternate Identifier(s):
OSTI ID: 1236705
Report Number(s):
LA-UR-15-21715
Journal ID: ISSN 1931-7573; PII: 1009
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nanoscale Research Letters
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 1931-7573
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; molecular dynamics; sputtering; nanoparticles; clusters; 36 MATERIALS SCIENCE

Citation Formats

Sandoval, Luis, and Urbassek, Herbert M. Collision-spike sputtering of Au nanoparticles. United States: N. p., 2015. Web. doi:10.1186/s11671-015-1009-x.
Sandoval, Luis, & Urbassek, Herbert M. Collision-spike sputtering of Au nanoparticles. United States. https://doi.org/10.1186/s11671-015-1009-x
Sandoval, Luis, and Urbassek, Herbert M. 2015. "Collision-spike sputtering of Au nanoparticles". United States. https://doi.org/10.1186/s11671-015-1009-x. https://www.osti.gov/servlets/purl/1222631.
@article{osti_1222631,
title = {Collision-spike sputtering of Au nanoparticles},
author = {Sandoval, Luis and Urbassek, Herbert M.},
abstractNote = {Ion irradiation of nanoparticles leads to enhanced sputter yields if the nanoparticle size is of the order of the ion penetration depth. While this feature is reasonably well understood for collision-cascade sputtering, we explore it in the regime of collision-spike sputtering using molecular-dynamics simulation. For the particular case of 200-keV Xe bombardment of Au particles, we show that collision spikes lead to abundant sputtering with an average yield of 397 ± 121 atoms compared to only 116 ± 48 atoms for a bulk Au target. Only around 31 % of the impact energy remains in the nanoparticles after impact; the remainder is transported away by the transmitted projectile and the ejecta. As a result, the sputter yield of supported nanoparticles is estimated to be around 80 % of that of free nanoparticles due to the suppression of forward sputtering.},
doi = {10.1186/s11671-015-1009-x},
url = {https://www.osti.gov/biblio/1222631}, journal = {Nanoscale Research Letters},
issn = {1931-7573},
number = 1,
volume = 10,
place = {United States},
year = {Thu Aug 06 00:00:00 EDT 2015},
month = {Thu Aug 06 00:00:00 EDT 2015}
}

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Cited by: 23 works
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Works referenced in this record:

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Ion Impacts on Graphene/Ir(111): Interface Channeling, Vacancy Funnels, and a Nanomesh
journal, April 2013


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Influence of local curvature on sputtering
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journal, June 2007


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Works referencing / citing this record:

Sputtering of silicon nanopowders by an argon cluster ion beam
journal, January 2019


Anisotropic Phase Transformation in B2 Crystalline CuZr Alloy
journal, August 2019


Sputtering of silicon nanopowders by an argon cluster ion beam
journal, January 2019