Molecular dynamics simulation of the meniscus formation between two surfaces

Chen, Yunfei; Weng, Jian-gang; Lukes, Jennifer R.; Majumdar, Arunava; Tien, Chang-Lin
August 2001
Applied Physics Letters;8/27/2001, Vol. 79 Issue 9, p1267
Academic Journal
The molecular dynamics computational method is used to simulate meniscus formation around an asperity in a rough surface represented as a sinusoidal wave. Simulation results show that the meniscus formation depends on the interaction potential between the solid wall and the liquid atoms. For completely and partially dry substrates a meniscus cannot form around an asperity. For partially and completely wetting substrates the asperity helps to adsorb the fluid atoms and form a meniscus. These simulation results confirm that if the film thickness exceeds a critical value, the capillary pressure contributes strongly to stiction. © 2001 American Institute of Physics.


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