Sputtering yields exceeding 1000 by 80 keV Xe irradiation of Au nanorods

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

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Using experiments and computer simulations, we find that 80 keV Xe ion irradiation of Au nanorods can produce sputtering yields exceeding 1000, which to our knowledge are the highest yields reported for sputtering by single ions in the nuclear collision regime. This value is enhanced by more than an order of magnitude compared to the same irradiation of flat Au surfaces. Using MD simulations, we show that the very high yield can be understood as a combination of enhanced yields due to low incoming angles at the sides of the nanowire, as well as the high surface-to-volume ratio causing enhanced explosive sputtering from heat spikes. We also find, both in experiments and simulations, that channeling has a strong effect on the sputtering yield: if the incoming beam happens to be aligned with a crystal axis of the nanorod, the yield can decrease to about 100.

Original languageEnglish
Pages (from-to)17-21
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume341
DOIs
Publication statusPublished - 15 Dec 2014

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Nanorods
nanorods
Sputtering
sputtering
Irradiation
irradiation
Ion bombardment
Nanowires
simulation
Experiments
ion irradiation
spikes
Crystals
flat surfaces
Computer simulation
Ions
nanowires
computerized simulation
heat
collisions

Cite this

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title = "Sputtering yields exceeding 1000 by 80 keV Xe irradiation of Au nanorods",
abstract = "Using experiments and computer simulations, we find that 80 keV Xe ion irradiation of Au nanorods can produce sputtering yields exceeding 1000, which to our knowledge are the highest yields reported for sputtering by single ions in the nuclear collision regime. This value is enhanced by more than an order of magnitude compared to the same irradiation of flat Au surfaces. Using MD simulations, we show that the very high yield can be understood as a combination of enhanced yields due to low incoming angles at the sides of the nanowire, as well as the high surface-to-volume ratio causing enhanced explosive sputtering from heat spikes. We also find, both in experiments and simulations, that channeling has a strong effect on the sputtering yield: if the incoming beam happens to be aligned with a crystal axis of the nanorod, the yield can decrease to about 100.",
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Sputtering yields exceeding 1000 by 80 keV Xe irradiation of Au nanorods. / Ilinov, A.; Kuronen, A.; Nordlund, K.; Greaves, G.; Hinks, J. A.; Busby, P.; Mellors, N. J.; Donnelly, S. E.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 341, 15.12.2014, p. 17-21.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Sputtering yields exceeding 1000 by 80 keV Xe irradiation of Au nanorods

AU - Ilinov, A.

AU - Kuronen, A.

AU - Nordlund, K.

AU - Greaves, G.

AU - Hinks, J. A.

AU - Busby, P.

AU - Mellors, N. J.

AU - Donnelly, S. E.

PY - 2014/12/15

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AB - Using experiments and computer simulations, we find that 80 keV Xe ion irradiation of Au nanorods can produce sputtering yields exceeding 1000, which to our knowledge are the highest yields reported for sputtering by single ions in the nuclear collision regime. This value is enhanced by more than an order of magnitude compared to the same irradiation of flat Au surfaces. Using MD simulations, we show that the very high yield can be understood as a combination of enhanced yields due to low incoming angles at the sides of the nanowire, as well as the high surface-to-volume ratio causing enhanced explosive sputtering from heat spikes. We also find, both in experiments and simulations, that channeling has a strong effect on the sputtering yield: if the incoming beam happens to be aligned with a crystal axis of the nanorod, the yield can decrease to about 100.

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