AVS 54th International Symposium | |
Tribology | Thursday Sessions |
Session TR3+NS-ThA |
Session: | Nanotribology and Nanomechanics |
Presenter: | B.D. Dawson, North Carolina State University |
Authors: | B.D. Dawson, North Carolina State University S.M. Lee, North Carolina State University J. Krim, North Carolina State University |
Correspondent: | Click to Email |
In order to probe the rise in temperature of a sliding interface, a Scanning Tunneling Microscope and Quartz Crystal Microbalance has been combined to produce a rubbing action of a tungsten tip on a copper and indium electrode, respectively. The amplitude of oscillation1 and wear of the electrodes is observed directly with the STM. Negative frequency shifts, which are indicative of a liquid-solid interface,2 were observed for tungsten on indium rubbing. The chamber was heated and negative frequencies were observed at reduced sliding speeds, implying surface melting at the indium interface. This work was funded by The National Science Foundation and the AFOSR Extreme Friction MURI.
1B. Borovsky, B. L. Mason, and J. Krim, J. Appl. Phys. 88, 4017 (2000).
2C. M. Flanigan, M Desai, and K. R. Shull, Langmuir. 16, 9825 (2000).