期刊
JOURNAL OF CHEMICAL PHYSICS
卷 113, 期 18, 页码 7723-7727出版社
AIP Publishing
DOI: 10.1063/1.1322657
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We have explored the deposition of size-selected Ag-N(+) clusters (N=50-200) onto the graphite surface (at room temperature) over the impact energy range of 250-2500 eV, via a combination of scanning tunneling microscopy experiments and molecular dynamics simulations. We show that the clusters are pinned to the surface when the impact energy exceeds a critical value, which is proportional to the cluster size, N, via the formation of a point defect at the impact site. This prevents lateral diffusion of the clusters even at room temperature. (C) 2000 American Institute of Physics. [S0021-9606(00)71742-9].
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