Friction and Molecular Deformation in the Tensile Regime
- 8 February 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 82 (6) , 1181-1184
- https://doi.org/10.1103/physrevlett.82.1181
Abstract
Recent molecular level studies of energy dissipation in sliding friction have suggested a contribution from adhesive forces. In order to observe this directly, we have constructed a scanning force microscope with decoupled lateral and normal force sensors to simultaneously observe the onset of both friction and attractive forces. Measurements made on self-assembling alkanethiol films with chemically different tail groups show that friction can increase with stronger adhesive intermolecular forces and from the associated tensile deformation and collective motion of the thiol chains.Keywords
This publication has 20 references indexed in Scilit:
- Frictional imaging in a scanning near-field optical/atomic-force microscope by a thin step etched optical fiber probeApplied Physics Letters, 1997
- Adhesion of elastic spheresProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 1997
- Friction at the Atomic ScaleScientific American, 1996
- Nanotribology: friction, wear and lubrication at the atomic scaleNature, 1995
- Probing Adhesion Forces at the Molecular ScaleJournal of the American Chemical Society, 1995
- Synthesis, Structure, and Properties of Model Organic SurfacesAnnual Review of Physical Chemistry, 1992
- Mechanical relaxation of organic monolayer films measured by force microscopyPhysical Review Letters, 1992
- Interaction forces of a sharp tungsten tip with molecular films on silicon surfacesPhysical Review Letters, 1990
- Effect of contact deformations on the adhesion of particlesJournal of Colloid and Interface Science, 1975
- Surface energy and the contact of elastic solidsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1971