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 journalArticlepeer-review

11 Citations (Scopus)
63 Downloads (Pure)

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.
Original languageEnglish
Article number012109
Number of pages8
JournalMaterials
Volume2
Issue number1
DOIs
Publication statusPublished - 24 Jan 2014

Keywords

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

Fingerprint Dive into the research topics of 'Size-dependent mobility of gold nano-clusters during growth on chemically modified graphene'. Together they form a unique fingerprint.

Cite this