Boundary lubrication: Dynamics of squeeze-out

S. Zilberman, B.N.J. Persson, A. Nitzan, F. Mugele, M. Salmeron

Research output: Contribution to journalArticleAcademic

21 Citations (Scopus)
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The dynamics of the expulsion of the last liquid monolayer of molecules confined between two surfaces (measured recently for the first time) has been analyzed by solving the two-dimensional Navier-Stokes equation combined with kinetic Monte Carlo simulations. Instabilities in the boundary line of the expelled film were observed. We show that the instabilities produce a rough boundary for all length scales above a critical value and a smooth boundary for shorter lengths. The squeezing out of all but a few trapped islands of liquid is shown to be the result of the pressure gradient in the contact area.
Original languageEnglish
Article number055103(R)
Number of pages4
JournalPhysical review E: Statistical, nonlinear, and soft matter physics
Issue number5
Publication statusPublished - 2001


  • IR-57264


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