Friction and Molecular Deformation in the Tensile Regime

Journal Article · Sun Jan 31 23:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.1181· OSTI ID:304271

Burns, A R; Houston, J E; Carpick, R W; Michalske, T A ^[1]

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1. Surface and Interface Sciences Department, MS 1413, Sandia National Laboratories, Albuquerque, New Mexico 87185-1413 (United States)

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. {copyright} {ital 1999} {ital The American Physical Society}

• Research Organization: Sandia National Laboratory
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 304271
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ADHESION
DEFORMATION
DISSIPATION FACTOR
INTERMOLECULAR FORCES
LUBRICANTS
MICROSCOPY
SLIDING FRICTION
TENSILE PROPERTIES
THIN FILMS
THIOLS