Effect of temperature on nano-scale adhesion for MEMS

Molecular dynamics simulation of adhesion behaviour during sliding friction between different materials is proposed. The Newton's equations of motion are established by using Morse potential function. The improved Verlet algorithm is employed to solve atom trajectories. Simulation show that adhesion tends to occur when the system's temperature increases sharply. There are few direct experimental measurements of the adhesion between surfaces of metals because it is very costly. The effects of such variables as block temperature, material properties are very hard to measure experimentally. The model is meaningful to delay or to prevent adhesion in MEMS by selecting the proper parameters.