About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Applied Physics Letters
Paper
Frictional properties of perfluoropolyether monolayers investigated with quartz resonators
Abstract
The high-frequency factional properties of thin lubricating layers of perfluoropolyethers coated onto the surface of quartz-crystal resonators were probed by measuring the increase in resonance bandwidth when the quartz surface comes into contact with a ceramic sphere. For a lubricant thickness of up to 11 Å, a maximum in bandwidth is observed. The width and the height of the maximum decrease with increasing lubricant thickness. This is attributed to dissipation occurring during intermittent contact between the substrate and the sphere. With a 25 Å lubricant film the sphere discontinuously jumps into contact, after which the movements of the sphere and the quartz are locked. © 2001 American Institute of Physics.