Temperature-controlled molecular dynamics study on velocity-dependent threshold behavior of dynamic nano-friction |
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Authors: | Keiji Hayashi Tomoki Shiraishi Kazuho Toyoda Fumiya Tanaka Taiga Mori Takumi Hata |
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Affiliation: | Advanced Optical Electro-Magnetic Field Science Laboratory, Kanazawa Institute of Technology, 7-1 Ohgigaoka, Nonoichi, Ishikawa 921-8501, Japan |
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Abstract: | Laws of dynamic nano-friction (i.e., continuous wearless friction) were searched for under steady spatial distributions of the local quasi-temperature, by molecular dynamics (MD) simulations. The temperature control of the non-conservative model was carried out by extending the isothermal MD method using the Nosé–Poincaré thermostat. The results suggested that the threshold phenomenon characterizes sliding-velocity dependence of the nano-frictional force between crystal lattices constituting a nano-electromechanical system (NEMS). This phenomenon was turned out to be a universal feature, whether heat transfer to the environment exists or not. |
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Keywords: | Non-equilibrium molecular dynamics methods Complex system Nanotribology Phononic properties |
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