Simulation of Liquid-Bridging Formation between Surfaces Having Two-Dimensional Sinusoidal Roughness by Using the Molecular Dynamic Method

摘要

Using Lennard-Jones fluid, a liquid bridge formation between solid surfaces having two-dimensional roughness was simulated by molecular dynamics. First, we simulated the formation of the liquid bridge from the state of vapor enclosed between the smooth surfaces. From the calculation, the formation of the small liquid drops and bridges on the solid surfaces and the fusion of the small drops and bridges were observed. Second, we simulated the liquid bridge formation from the state of the liquid drop confined between solid surfaces having two-dimensional roughness. We found that the molecular level roughness on the solid surfaces has an effect of disarranging the molecular layering in the liquid bridge and making the liquid bridge surface an arc shape.