Mechanism of Velocity Saturation of Atomic Friction Force and Dynamic Superlubricity at Torsional Resonance
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概要
- 論文の詳細を見る
We studied both mechanisms of the scan velocity saturation of the average friction force of friction force microscopy and the resonant reduction in the average friction force by superimposing torsional oscillation on a cantilever on the basis of the one-dimensional Tomlinson model at a finite temperature. The velocity saturation is caused by the appearance of a high degree of slip motion for a tip, which is induced by increasing the scan velocity. We proposed two possible mechanisms for the resonant reduction in the average friction force, namely, the enhanced synchronous slip motion of a tip atom with a support point and the activated slip motion of a tip atom caused by oscillation excitation at a stick point. The calculated results reproduce the experimental results well.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-08-30
著者
-
Natori Akiko
Department Of Electronic Engineering The University Of Electro-communications
-
Nakamura Jun
Department Of Environmental Sciences And Engineering University Of North Carolina
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Igarashi Masanori
Department of Electronic-Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
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