title: Boundary lubrication: dynamics of squeeze-out.
abstract: 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.
authors: School of Chemistry, Tel Aviv University, Tel-Aviv 69978, Israel.
authors: S
authors: S
authors: Zilberman
authors: B N
authors: BN
authors: Persson
authors: A
authors: A
authors: Nitzan
authors: F
authors: F
authors: Mugele
authors: M
authors: M
authors: Salmeron