Molecular dynamics simulation of nano-scale interfacial friction characteristic for different tribopair systems

2012 ◽  
Vol 258 (6) ◽  
pp. 2022-2028 ◽  
Author(s):  
En-Qiang Lin ◽  
Li-Sha Niu ◽  
Hui-Ji Shi ◽  
Zheng Duan
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Dynamics Simulation ◽  
Interfacial Friction ◽  
Friction Characteristic ◽  
Nano Scale

A131 Nano-scale sputtering behavior in Focused Ion Beam Processing via Large-Scale Molecular Dynamics Simulation

2006 ◽  
Vol 2006 (0) ◽  
pp. 17-18
Author(s):  
Shin-ichi Satake ◽  
Natsuki Inoue ◽  
Jun Taniguchi ◽  
Masahiko Shibahara ◽  
Tomoyuki Tsuchida ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Large Scale ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Dynamics Simulation ◽  
Nano Scale

PROPERTY SIMULATION FOR NANO-SCALE INTERFACIAL FRICTION BETWEEN TWO KINDS OF MATERIAL IN MEMS BASED ON AN ATOMISTIC SIMPLIFIED MODEL

2007 ◽  
Vol 21 (20) ◽  
pp. 3581-3590 ◽  
Author(s):  
PING YANG ◽  
NINGBO LIAO ◽  
DAOGUO YANG
Keyword(s):  
Molecular Dynamics ◽  
Friction Force ◽  
Computational Simulation ◽  
Research Work ◽  
Dynamics Simulation ◽  
Simplified Model ◽  
Dominant Factor ◽  
Interfacial Friction ◽  
Nano Scale ◽  
Peak Value

The objective of this research work is to provide a systematic method to perform molecular dynamics simulation or evaluation for nano-scale interfacial friction between different materials in MEMS. A simplified model to simulate surface sliding between different kinds of material by molecular dynamics [MD] is proposed because the surface property is a dominant factor for the performance between two kinds of material in MEMS. The Newton's equations of motion are established by using the Morse potential function. An improved Verlet algorithm is employed to solve atom trajectories. Comparing the results of the computer simulation with experimental results in Ref. 1, the validity of the model is confirmed. The simulation results show that the preliminary stage and the last stage, when no interface is formed, the friction force fluctuates periodly and its peak value is smaller relatively, while at the intermediate stage, where the interface is formed, the friction force fluctuates periodly and its peak value is relatively bigger. The friction force is approximately proportional to the contact area. In the meantime, Cu sliding along Al with uniform speed and accelerated motion was also investigated, the mechanical properties between two surfaces were analyzed and a tentative computational simulation on the effect of the driving force was developed. The results lay a basis for future work.

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