Defect mediated manipulation of nanoclusters on an insulator.

Abstract:

:With modern scanning probe microscopes, it is possible to manipulate surface structures even at the atomic level. However, manipulation of nanoscale objects such as clusters is often more relevant and also more challenging due to the complicated interactions between the surface, cluster and apparatus. We demonstrate the manipulation of nanometer scale gold clusters on the NaCl(001) surface with a non-contact atomic force microscope, and show that the movement of clusters is in certain cases constrained to specific crystallographic directions. First principles calculations explain this kinetic anisotropy as the result of the cluster attaching to surface defects: cation vacancies allow the clusters to bond in such a way that they only move in one direction. Constraining the movement of clusters could be exploited in the construction of nanostructures or nanomechanical devices, and the manipulation signatures may also be used for identifying cluster-defect complexes.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Hynninen T,Cabailh G,Foster AS,Barth C

doi

10.1038/srep01270

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

1270

issn

2045-2322

pii

srep01270

journal_volume

3

pub_type

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