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Surface morphologies of size-selected Mo<sub>100±2.5</sub> and (MoO<sub>3</sub>)<sub>67±1.5</sub> clusters soft-landed onto HOPG

Surface morphologies of size-selected Mo100±2.5 and (MoO3)67±1.5 clusters soft-landed onto HOPG

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WEPASNICK, Kevin A., X. LI, Tobias MANGLER, Stephan NOESSNER, C. WOLKE, M. GROSSMANN, Gerd GANTEFÖR, D. Howard FAIRBROTHER, Kit H. BOWEN, 2011. Surface morphologies of size-selected Mo100±2.5 and (MoO3)67±1.5 clusters soft-landed onto HOPG. In: The Journal of Physical Chemistry C. 115(25), pp. 12299-12307. ISSN 1932-7447. Available under: doi: 10.1021/jp202165u

@article{Wepasnick2011Surfa-19184, title={Surface morphologies of size-selected Mo100±2.5 and (MoO3)67±1.5 clusters soft-landed onto HOPG}, year={2011}, doi={10.1021/jp202165u}, number={25}, volume={115}, issn={1932-7447}, journal={The Journal of Physical Chemistry C}, pages={12299--12307}, author={Wepasnick, Kevin A. and Li, X. and Mangler, Tobias and Noessner, Stephan and Wolke, C. and Grossmann, M. and Ganteför, Gerd and Fairbrother, D. Howard and Bowen, Kit H.} }

Noessner, Stephan eng Publ. in: Journal of Physical Chemistry C ; 115 (2011), 25. - S. 12299-12307 Wolke, C. Mangler, Tobias Grossmann, M. Bowen, Kit H. Bowen, Kit H. Noessner, Stephan 2012-05-02T19:41:26Z Surface morphologies of size-selected Mo<sub>100±2.5</sub> and (MoO<sub>3</sub>)<sub>67±1.5</sub> clusters soft-landed onto HOPG Ganteför, Gerd Mass-selected, cluster anion beams of Mo<sub>100±2.5</sub>– and (MoO<sub>3</sub>)<sub>67±1.5</sub>– were prepared with a magnetron source and soft-landed onto highly ordered pyrolytic graphite (HOPG) under UHV conditions. These two clusters were selected because they possess essentially the same masses and consequently could be soft-landed with the same low kinetic energies. The chemical composition of the deposited clusters was analyzed using in situ Auger electron spectroscopy and ex situ X-ray photoelectron spectroscopy, while their surface morphologies were characterized with in situ scanning tunneling microscopy (STM) and ex situ atomic force microscopy (AFM). Both STM and AFM results indicated a high mobility for the metal atom clusters on HOPG at room temperature. At low coverages, Mo<sub>100±2.5</sub> clusters nucleated preferentially at step-edges. As their coverage increased, cluster aggregates formed on the terraces until a fully saturated overlayer was created. By contrast, deposited metal oxide clusters produced a stochastic array of adsorbed clusters for all coverages. Differences in the behavior of deposited Mo<sub>100±2.5</sub> and (MoO<sub>3</sub>)<sub>67±1.5</sub> clusters were interpreted in terms of differences in the interactions of metal and metal oxide clusters with carbonaceous substrates. 2011 Fairbrother, D. Howard Fairbrother, D. Howard deposit-license Li, X. Li, X. Wolke, C. 2012-05-02T19:41:26Z Wepasnick, Kevin A. Ganteför, Gerd Wepasnick, Kevin A. Grossmann, M. Mangler, Tobias

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