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|a eng
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|a Bertrand, E
|e verfasserin
|4 aut
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|a Dynamics of dewetting at the nanoscale using molecular dynamics
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|c 2007
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|a Text
|b txt
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|b nc
|2 rdacarrier
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|a Date Completed 15.05.2007
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|a Date Revised 20.03.2007
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Large-scale molecular dynamics simulations are used to model the dewetting of solid surfaces by partially wetting thin liquid films. Two levels of solid-liquid interaction are considered that give rise to large equilibrium contact angles. The initial length and thickness of the films are varied over a wide range at the nanoscale. Spontaneous dewetting is initiated by removing a band of molecules either from each end of the film or from its center. As observed experimentally and in previous simulations, the films recede at an initially constant speed, creating a growing rim of liquid with a constant receding dynamic contact angle. Consistent with the current understanding of wetting dynamics, film recession is faster on the more poorly wetted surface to an extent that cannot be explained solely by the increase in the surface tension driving force. In addition, the rates of recession of the thinnest films are found to increase with decreasing film thickness. These new results imply not only that the mobility of the liquid molecules adjacent to the solid increases with decreasing solid-liquid interactions, but also that the mobility adjacent to the free surface of the film is higher than in the bulk, so that the effective viscosity of the film decreases with thickness
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|a Journal Article
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|a Blake, T D
|e verfasserin
|4 aut
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|a Ledauphin, V
|e verfasserin
|4 aut
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|a Ogonowski, G
|e verfasserin
|4 aut
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|a Coninck, J De
|e verfasserin
|4 aut
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|a Fornasiero, D
|e verfasserin
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|a Ralston, J
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 23(2007), 7 vom: 27. März, Seite 3774-85
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:23
|g year:2007
|g number:7
|g day:27
|g month:03
|g pages:3774-85
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