scholarly journals Speed Dependence of Atomic Stick-Slip Friction in Optimally Matched Experiments and Molecular Dynamics Simulations

2011 ◽  
Vol 106 (12) ◽  
Author(s):  
Qunyang Li ◽  
Yalin Dong ◽  
Danny Perez ◽  
Ashlie Martini ◽  
Robert W. Carpick
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Stick Slip ◽  
Speed Dependence ◽  
Dynamics Simulations

scholarly journals Molecular dynamics simulations of nanoindentation and nanotribology

2005 ◽  
Vol 363 (1833) ◽  
pp. 1949-1959 ◽  
Author(s):  
S.D Kenny ◽  
D Mulliah ◽  
C.F Sanz-Navarro ◽  
Roger Smith
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Qualitative Agreement ◽  
Good Qualitative Agreement ◽  
Computational Steering ◽  
Stick Slip ◽  
Atomic Force ◽  
Real Time Visualization ◽  
Parallel Molecular Dynamics ◽  
Dynamics Simulations

We present results of parallel molecular dynamics simulations of nanoindentation and nanotribology experiments. The models we have developed describe both the sample and the indenter atomistically and model the effect of the cantilevers in an atomic force microscope through the use of springs. We show that the simulations are in good qualitative agreement with experiment and help to elucidate many of the mechanisms that take place during these processes. In particular, we illustrate the role that dislocations play both in nanoindentation and also in stick–slip. Further to this we show how real-time visualization and computational steering have been employed in these simulations to capture the dynamical events that take place.

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