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  Slippage and nanorheology of thin liquid polymer films

Bäumchen, O., Fetzer, R., Klos, M., Lessel, M., Marquant, L., Hähl, H., et al. (2012). Slippage and nanorheology of thin liquid polymer films. Journal of Physics: Condensed Matter, 24(32): 325102. doi:10.1088/0953-8984/24/32/325102.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-76A1-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-76A2-7
Genre: Journal Article

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 Creators:
Bäumchen, Oliver1, Author              
Fetzer, Renate2, Author
Klos, Mischa2, Author
Lessel, Matthias2, Author
Marquant, Lucovic2, Author
Hähl, Hendrik2, Author
Jacobs, Karin2, Author
Affiliations:
1Group Dynamics of fluid and biological interfaces, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063300              
2External Organizations, ou_persistent22              

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 Abstract: Thin liquid films on surfaces are part of our everyday life; they serve, e.g., as coatings or lubricants. The stability of a thin layer is governed by interfacial forces, described by the effective interface potential, and has been subject of many studies in recent decades. In recent years, the dynamics of thin liquid films has come into focus since results on the reduction of the glass transition temperature raised new questions on the behavior of especially polymeric liquids in confined geometries. The new focus was fired by theoretical models that proposed significant implication of the boundary condition at the solid/liquid interface on the dynamics of dewetting and the form of a liquid front. Our study reflects these recent developments and adds new experimental data to corroborate the theoretical models. To probe the solid/liquid boundary condition experimentally, different methods are possible, each bearing advantages and disadvantages, which will be discussed. Studying liquid flow on a variety of different substrates entails a view on the direct implications of the substrate. The experimental focus of this study is the variation of the polymer chain length; the results demonstrate that inter-chain entanglements and in particular their density close to the interface, originating from non-bulk conformations, govern the liquid slip of a polymer.

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Language(s): eng - English
 Dates: 2012-05-31
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1088/0953-8984/24/32/325102
BibTex Citekey: baeumchen-jpcm-2012
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Title: Journal of Physics: Condensed Matter
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: 18 Volume / Issue: 24 (32) Sequence Number: 325102 Start / End Page: - Identifier: ISSN: 0953-8984
CoNE: https://pure.mpg.de/cone/journals/resource/954928562478