| AVS 54th International Symposium | |
| Tribology | Friday Sessions |
| Session TR4+SE-FrM |
| Session: | Friction and Wear of Engineered Surfaces Macro- to Nanoscale Approaches |
| Presenter: | R.W. Carpick, University of Pennsylvania |
| Authors: | R.W. Carpick, University of Pennsylvania D.S. Grierson, University of Wisconsin-Madison A.R. Konicek, University of Wisconsin-Madison P.U.P.A. Gilbert, University of Wisconsin-Madison A.V. Sumant, Argonne National Laboratory O. Auciello, Argonne National Laboratory R.J. Cannara, IBM Zürich, Switzerland T.A. Friedmann, Sandia National Laboratories W.G. Sawyer, Univeristy of Florida J.A. Carlisle, Advanced Diamond Technologies |
| Correspondent: | Click to Email |
Nanostructured carbon-based materials, such as nanocrystalline diamond and atomically smooth, nanometer-thick diamondlike carbon films, have outstanding and in many cases unrivalled tribo-mechanical properties. The atomic structure of the surfaces, verified by detailed surface spectroscopy, critically affects nano-scale friction and adhesion. We will specifically discuss how hydrogen termination, sp2-content, and crystal orientation affect adhesion and friction at the nanoscale. Next, we discuss how surface spectroscopy and imaging can be simultaneously applied to study wear of carbon films using photoelectron emission microscopy (PEEM)/X-ray absorption near edge structure (XANES). From these studies we test the hypotheses of ultralow friction in these materials, specifically, the extent to which chemical passivation of dangling bonds and convertion to graphitically bonded carbon occur. Finally, we will discuss taking advantage of this knowledge for nanoelectromechanical systems and advanced nanoprobe applications.