NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
53rd NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
Session ID : 3B6
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OS19
Atomistics of Friction
*Motohisa Hirano
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Abstract
Superlubricity, that is a phenomena of vanishing friction has been studied theoretically and experimentally. It is theoretically shown that certain unique cases exist where friction force exactly vanishes when the atomic arrangements of contacting surfaces satisfies the condition for the appearance of superlubricity. The experiments agree with the theoretical predictions. The measurements of atomically clean surfaces show that friction forces decrease as the contacting conditions approach those for the appearance of superlubricity. Friction is not observed in the superlubricity regime in measurements capable of resolving a friction force of 3 nN by scanning tunneling microscope.
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© 2004 Committee for Mechanics and Structure,Science Council
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