Phys. Rev. Lett. 97, 136106 (2006) [4 pages]

Predictions and Observations of Multiple Slip Modes in Atomic-Scale Friction

Abstract

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Sergey N. Medyanik^1,*, Wing Kam Liu¹, In-Ha Sung^2,†, and Robert W. Carpick²
¹Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, USA
²Department of Engineering Physics, University of Wisconsin–Madison, Madison, Wisconsin 53706, USA

Received 23 March 2006; published 27 September 2006

Using the quasistatic Tomlinson model as a simple representation of an atomic force microscope, conditions for transitions in atomic-scale friction behavior from smooth sliding to single slips and then multiple slip regimes are derived based on energy minimization. The calculations predict and give a general explanation for transitions between different stick-slip regimes in the limit of low damping. The predictions are consistent with experimental observations of these transitions.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.97.136106

DOI:

10.1103/PhysRevLett.97.136106

PACS:

68.37.Ps, 46.55.+d, 62.20.Qp, 81.40.Pq

^*Currently at Washington State University, Pullman, WA, USA.

^†Currently at Hannam University, South Korea.

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Phys. Rev. Lett. 97, 136106 (2006) [4 pages]

Predictions and Observations of Multiple Slip Modes in Atomic-Scale Friction