Velocity dependence of friction and hydrogen bonding effects

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We show that the friction force varies with the sliding velocity in a manner that depends on the chemical nature of the interface. Surfaces terminated with the hydrogen acceptor and donor moieties capable of forming H-bond networks exhibit a friction that decreases with sliding velocity, a behavior that is opposite to that of surfaces where no such networks can form. We explain the results with a model where the domains of glassy H-bond networks are disrupted at a critical applied stress leading to slippage.
Publisher
AMERICAN PHYSICAL SOC
Issue Date
2006-06
Language
English
Article Type
Article
Keywords

SELF-ASSEMBLED MONOLAYERS; ATOMIC-FORCE MICROSCOPY; STICK-SLIP MOTION; ULTRATHIN FILMS; SURFACE; MICA; MOLECULES; CONTACT

Citation

PHYSICAL REVIEW LETTERS, v.96, no.23

ISSN
0031-9007
DOI
10.1103/PhysRevLett.96.236102
URI
http://hdl.handle.net/10203/86456
Appears in Collection
EEW-Journal Papers(저널논문)
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