A study on the elongation of embedded Au nanoclusters in SiO2 by swift heavy ion irradiation using MD simulations

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We have studied the elongation of Au nanoclusters embedded in amorphous SiO2 using MD simulations. The effect of swift heavy ions (SHI) was implemented using instantaneous energy deposition with a radial profile that was obtained from the inelastic thermal spike model. During the first impact on the cluster, the clusters (d = 9–11 nm) gained about 20% in length due to thermal stress within the cluster, which is released by a longitudinal flow of Au atoms to the ion track in silica. Our simulations also show that high temperatures at the track core lead to the formation of silica vapor, whose pressure may flatten the cluster.
Original languageEnglish
JournalNuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
Pages (from-to)76-80
Number of pages5
Publication statusPublished - 2012
MoE publication typeA4 Article in conference proceedings
EventUnknown host publication - , Netherlands
Duration: 1 Jan 1800 → …

Fields of Science

  • 114 Physical sciences

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