Volume 87, Number 6, September 2009
|Number of page(s)||5|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||07 October 2009|
Deep bulk atoms in a solid cause friction
Toyota Central R&D Labs., Inc. - 41-1, Yokomichi, Nagakute, Nagakute-cho, Aichi 480-1192, Japan
Corresponding author: email@example.com
Accepted: 7 September 2009
To analyze kinetic friction between solids on the atomic scale, a coupled-oscillator surface model including an infinite number of atomic layers is developed by a self-consistent scheme using a Green's function. The numerical approach shows that friction involves not only surface atoms and their interaction with an opposite surface but also bulk atoms in a solid. Energy transfer from kinetic energy of a sliding solid to low-frequency lattice vibration occurs in the presence of bulk atoms, and energy dissipation into the bulk system leads to friction.
PACS: 68.35.Af – Atomic scale friction / 46.55.+d – Tribology and mechanical contacts / 81.40.Pq – Friction, lubrication and wear
© EPLA, 2009
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