Phys. Rev. Lett. 96, 236102 (2006) [4 pages]Velocity Dependence of Friction and Hydrogen Bonding EffectsReceived 1 February 2006; published 15 June 2006 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. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.236102
DOI:
10.1103/PhysRevLett.96.236102
PACS:
68.35.Af, 62.20.Qp, 62.25.+g, 68.37.Ps
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.