Enhanced Sputtering Yields from Single-Ion Impacts on Gold Nanorods

G. Greaves, J. A. Hinks, P. Busby, N. J. Mellors, A. Ilinov, A. Kuronen, K. Nordlund, and S. E. Donnelly

Phys. Rev. Lett. 111, 065504 – Published 8 August 2013

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 $\approx 50$ . 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.

Received 17 March 2013

DOI:https://doi.org/10.1103/PhysRevLett.111.065504

Authors & Affiliations

G. Greaves¹, J. A. Hinks¹, P. Busby², N. J. Mellors², A. Ilinov³, A. Kuronen³, K. Nordlund³, and S. E. Donnelly^1,*

¹School of Computing and Engineering, University of Huddersfield, Huddersfield HD1 3DH, United Kingdom
²School of Computing, Science and Engineering, University of Salford, Manchester M5 4WT, United Kingdom
³Department of Physics, University of Helsinki, P.O. Box 43, Helsinki FI-00014, Finland

^*Corresponding author. s.e.donnelly@hud.ac.uk

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Vol. 111, Iss. 6 — 9 August 2013

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