Eur. Phys. J. E 3, 369-376
Solid-like friction of a polymer chain
Th. Charitat - J.-F. Joanny
Institut Charles Sadron, 6 rue Boussingault, 67083 Strasbourg Cedex, France
Received 20 March 2000
We propose a simple friction model for isolated polymer chains on a solid substrate. The chains are pulled at constant velocity by one end, the other end can be trapped on the solid substrate on localised sites. We focus on the energy dissipation due to the traps. This simple model leads to nontrivial friction laws, depending on the velocity and the distance between traps. Some refinements of the model such as the effect of thermal fluctuations are also reported.
61.41.+e Polymers, elastomers, and plastics - 68.45.-v Solid-fluid interfaces - 81.40.Pq Friction, lubrification, and wear
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