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Pinning of size-selected gold and nickel nanoclusters on graphite

By M. Di Vece, S. Paloma and R.E. Palmer


Size-selected gold and nickel nanoclusters are of interest from an electronic, catalytic, and biological point of view. These applications require the deposition of the clusters on a surface, and a key challenge is to retain the cluster size. Here controlled energy impact is used to immobilize the size-selected clusters on the graphite surface at room temperature. The threshold energy for pinning of ionized AuN N=20–100 and NiN N =10–300 clusters, over the impact energy range 350–2000 eV, is shown by scanning tunneling microscopy to scale with the cluster mass. This behavior is consistent with a previous study of silver clusters and demonstrates the more general applicability of the cluster pinning model

Year: 2005
OAI identifier: oai:dspace.library.uu.nl:1874/282619
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