S1603-1-1 Analysis of Adhesive Properties of Monolayer Liquid Lubricant Films Using Molecular Dynamics Simulations

Abstract

Using molecular dynamics, we simulated behavior of monolayer perfluoropolyether (PFPE) films coated on a solid substrate with respect to the approach and separation movement of another solid surface. Due to the presence of polar end groups, contact to Zdol films and separation from Zdol films occurred at shorter solid-solid distances than Z films. Liquid transfer to the solid surface was also less noticeable for Zdol than for Z. On the other hand, Zdol films exhibited strong adhesion and remarkable adhesion hysteresis between the approach and separation processes as compared with Z films.