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Journal Article

Roughening transition in a moving contact line


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

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Golestanian, R., & Raphaël, E. (2003). Roughening transition in a moving contact line. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 67(3): 031603. doi:10.1103/PhysRevE.67.031603.

Cite as: https://hdl.handle.net/21.11116/0000-0001-AC57-C
The nonequilibrium dynamics of the deformation of a moving contact line on a disordered substrate was studied. It was found that the relaxation spectrum of a moving contact line is the same as the equilibrium case, but the characteristic relaxation velocity depends on v: It decreases with v until at the critical velocity corresponding to the coating transition it vanishes identically. The progressively slow relaxation of a disordered contact line near the coating transition is in agreement with a nucleation picture of the phase transition. Coating transition was actually understood in terms of a roughening transition of the contact line on the disordered substrate.