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Comprehensive Analysis of Dewetting Profiles to Quantify Hydrodynamic Slip

  • Conference paper
IUTAM Symposium on Advances in Micro- and Nanofluidics

Part of the book series: IUTAM Bookseries ((IUTAMBOOK,volume 15))

Summary

Hydrodynamic slip of Newtonian liquids is a new phenomenon, the origin of which is not yet clarified. There are various direct and indirect techniques to measure slippage. Here we describe a method to characterize the influence of slippage on the shape of rims surrounding growing holes in thin polymer films. Atomic force microscopy is used to study the shape of the rim; by analyzing its profile and applying an appropriate lubrication model we are able to determine the slip length for polystyrene films. In the experiments we study polymer films below the entanglement length that dewet from hydrophobized (silanized) surfaces. We show that the slip length at the solid/liquid interface increases with increasing viscosity. The correlation between viscosity and slip length is dependent on the type of silanization. This indicates a link between the molecular mechanism of the interaction of polymer chains and silane molecules under flow conditions that we will discuss in detail.

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Author information

Author notes

  1. Renate Fetzer

    Present address: Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia

Authors and Affiliations

  1. Department of Experimental Physics, Saarland University, 66123, Saarbruecken, Germany

    Oliver Bäumchen, Renate Fetzer & Karin Jacobs

  2. School of Mathematical Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK

    Andreas Münch

  3. Weierstrass Institute for Applied Analysis and Stochastics (WIAS), Mohrenstrasse 19, 10117, Berlin, Germany

    Barbara Wagner

Authors
  1. Oliver Bäumchen
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  2. Renate Fetzer
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  3. Andreas Münch
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  4. Barbara Wagner
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  5. Karin Jacobs
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Corresponding author

Correspondence to Oliver Bäumchen .

Editor information

Editors and Affiliations

  1. Lehrstuhl für Aerodynamik, Technische Universität München, Boltzmannstrasse 15, 85748, Garching, Germany

    Marco Ellero , Xiangyu Hu  & Nikolaus Adams ,  & 

  2. Professur für Strömungsmechanik, Technische Universität Dresden, George-Bähr-Str. 3c, 01062, Dresden, Germany

    Jochen Fröhlich

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Bäumchen, O., Fetzer, R., Münch, A., Wagner, B., Jacobs, K. (2009). Comprehensive Analysis of Dewetting Profiles to Quantify Hydrodynamic Slip. In: Ellero, M., Hu, X., Fröhlich, J., Adams, N. (eds) IUTAM Symposium on Advances in Micro- and Nanofluidics. IUTAM Bookseries, vol 15. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-2626-2_4

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  • DOI: https://doi.org/10.1007/978-90-481-2626-2_4

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-2625-5

  • Online ISBN: 978-90-481-2626-2

  • eBook Packages: EngineeringEngineering (R0)

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