Publikation: Growth modes of thin films of ligand-free metal clusters
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2015
Autor:innen
Fairbrother, D. Howard
Tang, Xin
Bowen, Kit H.
Kim, Young Dok
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Journal of Applied Physics. 2015, 117(19), 195302. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.4921184
Zusammenfassung
Size-selected Mo n −, Wn −, and Fen − cluster anions are deposited on a weakly interacting substrate (highly oriented pyrolytic graphite) and studied ex-situ using atomic force microscopy. Depending on size, three growth modes can be distinguished. Very small clusters consisting of less than 10–30 atoms behave similar to atoms and coalesce into 3-dimensional bulk-like islands. Medium sized clusters consisting of hundreds of atoms do not coalesce and follow a Stanski-Krastanov growth pattern. At low coverage, an almost perfect monolayer is formed. This is a new finding different from all previous studies on deposited metal clusters. For clusters with several thousands of atoms, the growth pattern again changes. At low coverage, the substrate is dotted with individual clusters, while at high coverage, the surface becomes extremely rough.
Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Thin film growth, Monolayers, Atomic force microscopy, Metal surfaces, Molybdenum
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DOLLINGER, Andreas, Christoph H. STROBEL, Hannes BLEUEL, Alexander MARSTELLER, Gerd GANTEFÖR, D. Howard FAIRBROTHER, Xin TANG, Kit H. BOWEN, Young Dok KIM, 2015. Growth modes of thin films of ligand-free metal clusters. In: Journal of Applied Physics. 2015, 117(19), 195302. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.4921184BibTex
@article{Dollinger2015Growt-31508,
year={2015},
doi={10.1063/1.4921184},
title={Growth modes of thin films of ligand-free metal clusters},
number={19},
volume={117},
issn={0021-8979},
journal={Journal of Applied Physics},
author={Dollinger, Andreas and Strobel, Christoph H. and Bleuel, Hannes and Marsteller, Alexander and Ganteför, Gerd and Fairbrother, D. Howard and Tang, Xin and Bowen, Kit H. and Kim, Young Dok},
note={Article Number: 195302}
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<dcterms:abstract xml:lang="eng">Size-selected Mo <sub>n</sub> <sup>−</sup>, W<sub>n</sub> <sup>−</sup>, and Fe<sub>n</sub> <sup>− </sup>cluster anions are deposited on a weakly interacting substrate (highly oriented pyrolytic graphite) and studied ex-situ using atomic force microscopy. Depending on size, three growth modes can be distinguished. Very small clusters consisting of less than 10–30 atoms behave similar to atoms and coalesce into 3-dimensional bulk-like islands. Medium sized clusters consisting of hundreds of atoms do not coalesce and follow a Stanski-Krastanov growth pattern. At low coverage, an almost perfect monolayer is formed. This is a new finding different from all previous studies on deposited metal clusters. For clusters with several thousands of atoms, the growth pattern again changes. At low coverage, the substrate is dotted with individual clusters, while at high coverage, the surface becomes extremely rough.</dcterms:abstract>
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