Published In

Applied Physics Letters

Document Type

Article

Publication Date

2007

Subjects

Microelectromechanical systems, Quartz crystals, Surfaces (Technology)

Abstract

The high-speed tribological properties of microscale contacts are studied using an indenter probe and quartz crystal microbalance. Elastic and dissipative shear forces are monitored as a function of contact radius for sapphire/gold interfaces with an adsorbed octadecanethiol monolayer. We observe shear force transitions understood as taking the interface from slipping to stuck conditions. We relate this behavior to the presence of interfacial microslip. Dynamic modeling shows that our observations are consistent with an interface that, when sliding, experiences full slip during half of each cycle. We discuss the implications for this technique as a sensitive probe of sliding friction.

Description

This is the publisher's final PDF. Article appears in Journal of Chemical Physics (http://jcp.aip.org/) and is copyrighted (date) by the American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

*At the time of publication Adam M. Booth was affiliated with Grinnell College

DOI

10.1063/1.2784172

Persistent Identifier

http://archives.pdx.edu/ds/psu/14495

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