Bennewitz, R. and Gnecco, E. and Gyalog, T. and Meyer, E.. (2001) Atomic friction studies on well-defined surfaces. Tribology letters, Vol. 10, H. 1-2. pp. 51-56.
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Official URL: http://edoc.unibas.ch/dok/A5262148
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Abstract
Atomic friction studies have been performed by means of a friction force microscope (FFM) in ultrahigh vacuum, where well-defined surfaces can be prepared. A home-built FFM allows us to study lateral forces as low as 0.05 nN using rectangular silicon cantilevers. Furthermore, comparison with dissipation measurements performed in non-contact mode are possible. Recent experimental results are presented and discussed in the framework of a one-dimensional Tomlinson model which includes thermal activation. Atomic-scale stick-slip processes on a metallic surface could be repeatedly measured on Cu(111), while the Cu(100) surface was distorted by the tip during the scanning process. A logarithmic velocity dependence of atomic friction has been measured on Cu(111) and NaCl(100) for low scanning velocities. The dissipation found in stick-slip measurements is compared to the power loss detected in dynamic non-contact measurement.
Faculties and Departments: | 05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer) |
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UniBasel Contributors: | Meyer, Ernst |
Item Type: | Article, refereed |
Article Subtype: | Research Article |
Publisher: | Baltzer Science |
ISSN: | 1023-8883 |
Note: | Publication type according to Uni Basel Research Database: Journal article |
Identification Number: |
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Last Modified: | 22 Mar 2012 14:27 |
Deposited On: | 22 Mar 2012 13:56 |
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