Enhanced Sputtering Yields from Single-Ion Impacts on Gold Nanorods
Abstract
Sputtering yields, enhanced by more than an order of magnitude, have been observed for 80 keV Xe ion irradiation of monocrystalline Au nanorods. Yields are in the range 100-1900atoms/ion compared with values for a flat surface of ≈50. This enhancement results in part from the proximity of collision cascades and ensuing thermal spikes to the nanorod surfaces. Molecular dynamic modeling reveals that the range of incident angles occurring for irradiation of nanorods and the larger number of atoms in “explosively ejected” atomic clusters make a significant contribution to the enhanced yield.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 2013
- DOI:
- Bibcode:
- 2013PhRvL.111f5504G
- Keywords:
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- 61.05.J-;
- 61.46.Km;
- 61.80.Az;
- 61.80.Jh;
- Electron diffraction and scattering;
- Structure of nanowires and nanorods;
- Theory and models of radiation effects;
- Ion radiation effects