Non-monotonic velocity dependence of atomic friction

Details Non-monotonic velocity dependence of atomic friction Non-monotonic velocity dependence of atomic friction

2010-03-22

arxiv.org/abs/1003.4152v1

Tribol. Lett. 39, 229 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, to appear in Tribol. Lett.

Scientific paper

10.1007/s11249-010-9595-3

We study the velocity dependence of the frictional force of the tip of an atomic force microscope as it is dragged across a surface, taking into account memory effects and thermal fluctuations. Memory effects are described by a coupling of the tip to low frequency excitation modes of the surface in addition to the coupling to the periodic corrugation potential. We find that when the excitation mode frequency is comparable to the characteristic frequency corresponding to the motion of the tip across the surface, the velocity dependence of the frictional force is non monotonic, displaying a velocity range where the frictional force can decrease with increasing velocity. These results provide theoretical support for the interpretation of recent experiments which find a frictional force that decreases with velocity on surfaces covered with a monolayer.

Affiliated with

Also associated with

No associations

Rating

Non-monotonic velocity dependence of atomic friction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Non-monotonic velocity dependence of atomic friction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-monotonic velocity dependence of atomic friction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-206488