High-resolution scanning force microscopy of gold nanoclusters on the KBr (001) surface

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© 2006 American Physical Society (APS). This is the accepted version of the following article: Pakarinen, O. H. & Barth, C. & Foster, A. S. & Nieminen, Risto M. & Henry, C. R. 2006. High-resolution scanning force microscopy of gold nanoclusters on the KBr (001) surface. Physical Review B. Volume 73, Issue 23. 235428/1-10. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.73.235428, which has been published in final form at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.73.235428.

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Journal Title

Journal ISSN

Volume Title

School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2006

Major/Subject

Mcode

Degree programme

Language

en

Pages

235428/1-10

Series

Physical Review B, Volume 73, Issue 23

Abstract

In this study we use a combination of dynamic scanning force microscopy experiments and first-principles simulations to study the imaging process of gold nanoclusters adsorbed on the (001) surface of KBr. In previous experiments atomic resolution was readily obtained on the KBr substrate. However, it was not possible to resolve atoms within the clusters themselves. This correlates with imaging simulations we present here using several different probable tip models: measurable contrast was readily achieved on the KBr surface and on the gold (001) surface, but simulations on the clusters demonstrated poor contrast for all tips. We further consider the role of cluster charging in the tip-surface interaction, and the role that surface defects play in the properties of adsorbed clusters.

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Keywords

SFM, AFM, clusters, gold, KBr

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Citation

Pakarinen, O. H. & Barth, C. & Foster, A. S. & Nieminen, Risto M. & Henry, C. R. 2006. High-resolution scanning force microscopy of gold nanoclusters on the KBr (001) surface. Physical Review B. Volume 73, Issue 23. 235428/1-10. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.73.235428.