THE VELOCITY DEPENDENCE OF FRICTIONAL FORCES IN POINT-CONTACT FRICTION

Authors
ZWORNER O HOLSCHER H SCHWARZ UD WIESENDANGER R
Citation
O. Zworner et al., THE VELOCITY DEPENDENCE OF FRICTIONAL FORCES IN POINT-CONTACT FRICTION, Applied physics A: Materials science & processing, 66, 1998, pp. 263-267
Citations number
26
Categorie Soggetti
Physics, Applied
Journal title
Applied physics A: Materials science & processing → ACNP
ISSN journal
09478396
Volume
66
Year of publication
1998
Part
1
Supplement
S
Pages
263 - 267
Database
ISI
SICI code
0947-8396(1998)66:<263:TVDOFF>2.0.ZU;2-2
Abstract
The velocity dependence of point-contact friction is studied by means of friction force microscopy of different carbon compounds (diamond, g raphite, amorphous carbon). The measured frictional force is found to be constant over a wide range of sliding velocities [nm/s to mu m/s]. This result is substantiated by a simple mechanical model, where the f rictional forces are shown to be constant at sliding velocities well b elow the slip velocity.