Size-dependent mobility of gold nano-clusters during growth on chemically modified graphene

Gavin R. Bell, Peter M. Dawson, Priyanka A. Pandey, Neil R. Wilson, Paul Mulheran

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Gold nano-clusters were grown on chemically modified graphene by direct sputter deposition. Transmission electron microscopy of the nano-clusters on these electron-transparent substrates reveals an unusual bimodal island size distribution (ISD). A kinetic Monte Carlo model of growth incorporating a size-dependent cluster mobility rule uniquely reproduces the bimodal ISD, providing strong evidence for the mobility of large clusters during surface growth. The cluster mobility exponent of-5/3 is consistent with cluster motion via one-dimensional diffusion of gold atoms around the edges of the nano-clusters.
LanguageEnglish
Article number012109
Number of pages8
JournalMaterials
Volume2
Issue number1
DOIs
Publication statusPublished - 24 Jan 2014

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Graphite
Gold
Graphene
Sputter deposition
Transmission electron microscopy
Atoms
Kinetics
Electrons
Substrates

Keywords

  • thin film growth
  • gold
  • gold nano clusters
  • transmission electron microscopy

Cite this

Bell, Gavin R. ; Dawson, Peter M. ; Pandey, Priyanka A. ; Wilson, Neil R. ; Mulheran, Paul. / Size-dependent mobility of gold nano-clusters during growth on chemically modified graphene. In: Materials. 2014 ; Vol. 2, No. 1.
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Size-dependent mobility of gold nano-clusters during growth on chemically modified graphene. / Bell, Gavin R.; Dawson, Peter M.; Pandey, Priyanka A.; Wilson, Neil R.; Mulheran, Paul.

In: Materials, Vol. 2, No. 1, 012109, 24.01.2014.

Research output: Contribution to journalArticle

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