| Issue |
EPL
Volume 82, Number 2, April 2008
|
|
|---|---|---|
| Article Number | 26002 | |
| Number of page(s) | 4 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/82/26002 | |
| Published online | 28 March 2008 | |
Enhanced sputtering from nanoparticles and thin films: Size effects
Department of Physics, University of Helsinki - P.O. Box 43, FI-00014, Finland, EU
Corresponding author: tommi.t.jarvi@helsinki.fi
Received:
23
January
2008
Accepted:
4
March
2008
Sputtering of gold nanoparticles and nanometer-thin films under 25 keV gallium-ion bombardment is shown, using molecular-dynamics simulations, to be significantly enhanced compared to bulk. The highest yield, about three times that of bulk gold, occurs for particles of about 8 nm in diameter. For thin films, the maximal yield is obtained for roughly 3 nm thick films. A model based on the work of Sigmund is presented to explain the size-dependence.
PACS: 61.46.Df – Structure of nanocrystals and nanoparticles (“colloidal” quantum dots but not gate-isolated embedded quantum dots) / 68.49.Sf – Ion scattering from surfaces (charge transfer, sputtering, SIMS) / 61.82.Rx – Nanocrystalline materials
© EPLA, 2008
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