Abstract
We have used quartz crystal microbalance to study the sliding friction of atomically thin Kr films adsorbed on gold. We have observed sharp pinning transitions separating a low-coverage region, characterized by slippage at the solid-fluid boundary, from a high-coverage region where the film is locked to the oscillating electrodes. Furthermore, we have induced sliding of a film by slowly increasing the amplitude of the substrate oscillations. Such a depinning transition is characterized by hysteresis as the amplitude is decreased back to zero. These observations have been obtained with two different quartz plates and are similar to those recently reported in the literature. A more quantitative comparison among the different experimental runs indicate that the location of these dynamical transitions is strongly dependent on the state of the substrate surface.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
