Relaxation of a moving contact line and the Landau-Levich effect

Golestanian, R.; Raphaël, E.

doi:10.1209/epl/i2001-00607-5

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Relaxation of a moving contact line and the Landau-Levich effect

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Golestanian, R.
Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Golestanian, R., & Raphaël, E. (2001). Relaxation of a moving contact line and the Landau-Levich effect. Europhysics Letters, 55(2), 228-234. doi:10.1209/epl/i2001-00607-5.

Cite as: https://hdl.handle.net/21.11116/0000-0001-ACB5-1

Abstract

The dynamics of the deformations of a moving contact line is formulated. It is shown that an advancing contact line relaxes more quickly as compared to the equilibrium case, while for a receding contact line there is a corresponding slowing down. For a receding contact line on a heterogeneous solid surface, it is found that a roughening transition takes place which formally corresponds to the onset of leaving a Landau-Levich film. We propose a phase diagram for the system in which the phase boundaries corresponding to the roughening transition and the depinning transition meet at a junction point, and suggest that for sufficiently strong disorder a receding contact line will leave a Landau-Levich film immediately after depinning.