Abstract
We present molecular dynamics friction calculations for confined hydrocarbon solids with molecular lengths from 20 to 1400 carbon atoms. Two cases are considered: a) polymer sliding against a hard substrate, and b) polymer sliding on polymer. In the first setup the shear stresses are relatively independent of molecular length. For polymer sliding on polymer the friction is significantly larger, and dependent on the molecular chain length. In both cases, the shear stresses are proportional to the squeezing pressure and finite at zero load, indicating an adhesional contribution to the friction force.
Original language | English |
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Publication date | 2010 |
Publication status | Published - 2010 |
Event | FANAS 2010 Conference: Friction and Adhesion in Nanomechanical Systems - Saarbrucken, Germany Duration: 25 Oct 2010 → 28 Oct 2010 |
Conference
Conference | FANAS 2010 Conference |
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Country/Territory | Germany |
City | Saarbrucken |
Period | 25/10/2010 → 28/10/2010 |