Transverse Shear Oscillator Investigation of Boundary Lubrication in Weakly Adhered Films

J. Léopoldès and X. Jia
Phys. Rev. Lett. 105, 266101 – Published 20 December 2010

Abstract

We investigate the boundary lubrication in weakly adhered molecularly thin films deposited between a sphere and a plane, below the sliding threshold. The shear contact stiffness and interfacial dissipation at the micrometer scale are determined with a high-frequency quartz oscillator. Two distinct behaviors are found as a function of the shear oscillation: a linear viscoelastic response at low amplitude and a nonlinear frictional microslip at high amplitude. A friction model is proposed to analyze the data, which allows evaluating the shear strength, the friction coefficient, and the interfacial viscosity at different solid interfaces under low load.

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  • Received 11 June 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.266101

© 2010 The American Physical Society

Authors & Affiliations

J. Léopoldès* and X. Jia

  • Université Paris Est, Laboratoire de Physique des Matériaux divisés et Interfaces CNRS FRE 3300, 5 Bd Descartes, 77454 Marne la Vallée cedex 2, France

  • *julien.leopoldes@univ-mlv.fr
  • jia@univ-mlv.fr

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Issue

Vol. 105, Iss. 26 — 31 December 2010

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