Tomlinson Movie
Macroscopic Friction
The law of Leonardo (da Vinci)
The law of Euler and Amontons
The law of Coulomb
Historical abstract
Adhesion models
Friction Force Microscopy
Principle of measuring
Measuring Topology
Measuring Friction
Both Channels
Self assessment
Tomlinson's mechanism
Phenomenology I
Phenomenology II
Mechanical adiabaticity
Distinguish positions
Playing Tomlinson
Friction - a pinning problem
2D Friction
Critical Curves
Historical Background
Research Projects
Simulator Applet
The first Picture
The Panels
Post processing

Principle of measuring


The animation shows the principle of Friction Force Microscopy using the laser beam deflection method.

In scanning force microscopy a very small tip attached on a cantilever is drawn across a surface. The surface is systematically scanned line by line. The tip is bended by the forces between the tip and the surface. This motion of the tip is detected with the laser beam deflection method. On the upper side a mirror is attached on the canitlever which deflects a laserbeam. The position of the beam is detected with a four quadrant photo detector.

  This is the start of the trail               Measuring Topology

Please send comments to .