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Dynamic unbinding transitions and deposition patterns in dragged meniscus problems

conference contribution
posted on 07.08.2015 by Mariano Galvagno, Dmitri Tseluiko, Uwe Thiele
We sketch main results of our recent work on the transfer of a thin liquid film onto a flat plate that is extracted from a bath of pure non-volatile liquid. Employing a long-wave hydrodynamic model, that incorporates wettability via a Derjaguin (disjoining) pressure, we analyse steady-state meniscus profiles as the plate velocity is changed. We identify four qualitatively different dynamic transitions between microscopic and macroscopic coatings that are out-of-equilibrium equivalents of equilibrium unbinding transitions. The conclusion briefly discusses how the gradient dynamics formulation of the problem allows one to systematically extend the employed one-component model into thermodynamically consistent two-component models as used to describe, e.g., the formation of line patterns during the Langmuir-Blodgett transfer of a surfactant layer.

Funding

We acknowledge support by the EU via the FP7 Marie Curie scheme (ITN MULTIFLOW, PITN-GA-2008-214919). The work of DT was partly supported by the EPSRC under grants EP/J001740/1, EP/K041134/1.

History

School

  • Science

Department

  • Mathematical Sciences

Published in

4th Micro and Nano Flows Conference (MNF2014)

Citation

GALVAGNO, M., TSELUIKO, D. and THIELE, U., 2014. Dynamic unbinding transitions and deposition patterns in dragged meniscus problems. IN: Karayiannis, T., Konig, C.S. and Balabani, S. (eds). Proceedings of the 4th Micro and Nano Flows Conference (MNF2014), 6th-10th September 2014, University College London.

Publisher

Brunel University London

Version

SMUR (Submitted Manuscript Under Review)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2014

Notes

This conference paper is closed access.

ISBN

9781908549167

Language

en

Editor(s)

Konig, C.S.;Karayiannis, T.G.;Balabani, S.

Location

UCL, London, UK

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