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Size-dependent mobility of gold nano-clusters during growth on chemically modified graphene
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Bell, Gavin R., Dawson, Peter M., Pandey, Priyanka A., Wilson, Neil R. and Mulheran, Paul A. (2014) Size-dependent mobility of gold nano-clusters during growth on chemically modified graphene. APL Materials, Volume 2 (Number 1). Article number 012109. doi:10.1063/1.4862696 ISSN 2166-532X.
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Official URL: http://dx.doi.org/10.1063/1.4862696
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.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
| Journal or Publication Title: | APL Materials | ||||||||
| Publisher: | American Institute of Physics | ||||||||
| ISSN: | 2166-532X | ||||||||
| Official Date: | 24 January 2014 | ||||||||
| Dates: |
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| Volume: | Volume 2 | ||||||||
| Number: | Number 1 | ||||||||
| Article Number: | Article number 012109 | ||||||||
| DOI: | 10.1063/1.4862696 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) |
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