| Issue |
EPL
Volume 87, Number 6, September 2009
|
|
|---|---|---|
| Article Number | 66002 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/87/66002 | |
| 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: e1389@mosk.tytlabs.co.jp
Received:
4
June
2009
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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