Non-Amontons behavior of friction in single contacts

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dc.creatorBureau, Lionel
dc.creatorBaumberger, Tristan
dc.creatorCaroli, Christiane
dc.date2005-10-10
dc.date.accessioned2026-07-07T06:44:14Z
dc.date.available2026-07-07T06:44:14Z
dc.descriptionWe report on the frictional properties of a single contact between a glassy polymer lens and a flat silica substrate covered either by a disordered or by a self-assembled alkylsilane monolayer. We find that, in contrast to common belief, the Amontons proportionality between frictional and normal stresses does not hold. Besides, we observe that the velocity dependence of the sliding stress is strongly sensitive to the structure of the silane layer. Analysis of the frictional rheology observed on both disordered and self-assembled monolayers suggests that dissipation is controlled by the plasticity of a glass-like interfacial layer in the former case, and by pinning of polymer chains on the substrate in the latter one.
dc.descriptionsubmitted to Eur. Phys. J. E
dc.identifierhttps://arxiv.org/abs/cond-mat/0510232
dc.identifierhttp://arxiv.org/abs/cond-mat/0510232
dc.identifierEuropean Physical Journal E 19 (2006) 163
dc.identifierdoi:10.1140/epje/e2006-00019-2
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102711
dc.subjectSoft Condensed Matter
dc.titleNon-Amontons behavior of friction in single contacts
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