Thermal effects on atomic friction

We model friction acting on the tip of an atomic force microscope as it is dragged across a surface at non-zero temperatures. We find that stick-slip motion occurs and that the average frictional force follows $|\ln v|^{2/3}$, where $v$ is the tip velocity. This compares well to recent experimental work (Gnecco et al, PRL 84, 1172), permitting the quantitative extraction of all microscopic parameters. We calculate the scaled form of the average frictional force's dependence on both temperature and tip speed as well as the form of the friction-force distribution function.Comment: Accepted for publication, Physical Review Letter

AFM Imaging in Physiological Environment: From Biomolecules to Living Cells

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Grafting processes studied with a nanotip: Silane molecules and polymers grafted on silica and silanized silica surfaces

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Grafting processes studied with a nanotip: Silane molecules and polymers grafted on silica and silanized silica surfaces

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Préparation de structures périodiques de polyacétylène substitué par microscopie à force atomique en mode contact : compétition entre friction et pelage

Dans ce papier, nous présentons une tentative de modification de la surface d'un film de polyacétylène déposé sur du mica. L'étude est réalisée à l'aide d'un M.F.A. en mode contact. Nous montrons l'influence de la vitesse de balayage de la pointe et de la force d'application sur l'amplitude de la période des fagots formés lors du balayage

FTIR spectroscopy and nanotribological comparative studies: influence of the adsorbed water layers on the tribological behaviour

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