Enhanced sputtering yields from single-ion impacts on gold nanorods.
Phys Rev Lett
; 111(6): 065504, 2013 Aug 09.
Article
em En
| MEDLINE
| ID: mdl-23971585
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 100-1900 atoms/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.
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En
Ano de publicação:
2013
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Article