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Author Stipe, B. C. ♦ Mamin, H. J. ♦ Stowe, T. D. ♦ Kenny, T. W. ♦ Rugar, D.
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword MATERIALS SCIENCE ♦ DAMPING ♦ DIELECTRIC MATERIALS ♦ ELECTRIC FIELDS ♦ FLUCTUATIONS ♦ FRICTION
Abstract Noncontact friction between a Au(111) surface and an ultrasensitive gold-coated cantilever was measured as a function of tip-sample spacing, temperature, and bias voltage using observations of cantilever damping and Brownian motion. The importance of the inhomogeneous contact potential is discussed and comparison is made to measurements over dielectric surfaces. Using the fluctuation-dissipation theorem, the force fluctuations are interpreted in terms of near-surface fluctuating electric fields interacting with static surface charge.
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 2001-08-27
Publisher Place United States
Journal Physical Review Letters
Volume Number 87
Issue Number 9


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