AVS 49th International Symposium
    Surface Science Thursday Sessions
       Session SS-ThA

Paper SS-ThA4
Frictional Anisotropy at Crystalline Interfaces

Thursday, November 7, 2002, 3:00 pm, Room C-110

Session: Tribology at Surfaces
Presenter: C.M. Mancinelli, Carnegie Mellon University
Authors: C.M. Mancinelli, Carnegie Mellon University
A.J. Gellman, Carnegie Mellon University
J.S. Ko, Merck & Co., Inc.
Correspondent: Click to Email
Fundamental tribological studies in an ultra-high vacuum environment have been performed to probe the effect of anisotropy on the friction between two single crystalline metal surfaces. The study of frictional anisotropy, or the effects of lattice orientation at crystal interfaces, has been conducted to address two main questions: whether slip between sliding surfaces occurs more easily along certain crystallographic directions, and whether the observed orientation effect on friction is a result of surface lattice commensurability. The results of a study of the frictional anisotropy between single crystalline Cu(100) surfaces will be presented. Tribological investigations were conducted on surfaces prepared to be either truly clean or modified by adsorption of molecular ethanol in the boundary lubrication regime. A detailed comparison will be made between these results and those previously obtained for the frictional anisotropy between single crystalline Ni(100) surfaces.