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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la202836q
|2 doi
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|a eng
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|a Duvivier, D
|e verfasserin
|4 aut
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|a Experimental evidence of the role of viscosity in the molecular kinetic theory of dynamic wetting
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|c 2011
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|a Text
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|a ƒaComputermedien
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|a Date Completed 16.02.2012
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|a Date Revised 25.10.2011
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We report an experimental study of the dynamics of spontaneous spreading of aqueous glycerol drops on glass. For a range of glycerol concentrations, we follow the evolution of the radius and contact angle over several decades of time and investigate the influence of solution viscosity. The application of the molecular kinetic theory to the resulting data allows us to extract the coefficient of contact-line friction ζ, the molecular jump frequency κ(0), and the jump length λ for each solution. Our results show that the modified theory, which explicitly accounts for the effect of viscosity, can successfully be applied to droplet spreading. The viscosity affects the jump frequency but not the jump length. In combining these data, we confirm that the contact-line friction of the solution/air interface against the glass is proportional to the viscosity and exponentially dependent on the work of adhesion
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|a Journal Article
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|a Seveno, D
|e verfasserin
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|a Rioboo, R
|e verfasserin
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|a Blake, T D
|e verfasserin
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|a De Coninck, J
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
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|g 27(2011), 21 vom: 01. Nov., Seite 13015-21
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