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Investigation on the molecular shear-induced organization in a molecularly thin film of n-hexadecane

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dc.contributor.authorCharrault, E.
dc.contributor.authorBanquy, X.
dc.contributor.authorKristiansen, K.
dc.contributor.authorIsraelachvili, J.
dc.contributor.authorGiasson, S.
dc.date.issued2013
dc.description.abstractThe frictional properties of a thin hexadecane film confined between two atomically smooth surfaces of mica were studied using the surface forces apparatus equipped with a 3D actuator-sensor attachment specially designed to investigate static and dynamic forces in three orthogonal directions simultaneously. The use of this attachment allows the relative alignment of the reciprocal sliding motion to be changed by an angle of 90 while maintaining the film under the same confinement conditions. The effects of the commensurability of the confining mica surfaces as well as the relative sliding direction on the frictional behavior of the hexadecane film were determined for different temperatures (18-29 C) and sliding velocities (4 nm/s to 4 μm/s). The confined hexadecane film exhibited smooth sliding friction whose amplitude increased with the commensuration of the surfaces. A progressive evolution in the kinetic friction force toward a steady-state value was observed over reciprocal sliding motion for given experimental conditions of applied load, sliding velocity and environmental temperature. This friction evolution shows to be dependent on the sliding history of the film and could result from a partial molecular ordering, occurring during shear.
dc.identifier.citationTribology Letters, 2013; 50(3):421-430
dc.identifier.doi10.1007/s11249-013-0138-6
dc.identifier.issn1023-8883
dc.identifier.issn1573-2711
dc.identifier.urihttps://hdl.handle.net/1959.8/162514
dc.language.isoen
dc.publisherSpringer New York LLC
dc.relation.fundingFonds de Recherches sur la Nature et les Technologies (FQRNT) Quebec
dc.relation.fundingNatural Sciences and Engineering Research Council (NSERC) Canada
dc.relation.fundingCentre for self-assembled chemical structures (CSACS) Montreal
dc.relation.fundingUS Department of Energy, Materials Sciences Division DE-FG02-87ER-45331
dc.relation.fundingSanta Barbara Foundation
dc.rightsCopyright 2013 Springer Science+Business Media New York
dc.source.urihttps://doi.org/10.1007/s11249-013-0138-6
dc.subjectanisotropy
dc.subjectboundary lubrication
dc.subjectfriction
dc.subjecthexadecane
dc.subjectmica
dc.subjectnanotribology
dc.subjectsurface forces apparatus
dc.titleInvestigation on the molecular shear-induced organization in a molecularly thin film of n-hexadecane
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9915909635401831

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