Abstract
Coarse-grained molecular dynamics simulations were performed to analyze the surface morphology of lubricant films composed of PFPE (Perfluoropolyether) Zdol and Trifunctional PFPE. Trifunctional PFPE has the functional group at the middle of a lubricant molecule as well as functional endgroups at the head and tail of the lubricant molecule. The mesh scanning method was introduced to detect the film surface. The effects of the functionality and length of the lubricant molecules on a flat solid surface with periodic boundary conditions were studied. We clarified that the film surface of the Trifunctional PFPE was smoother than PFPE Zdol2000 when compared at the condition of the same film thickness.
