Abstract
We propose a theoretical description of frictional phenomena in nanoscale layers of electrolyte solutions embedded between two plates, one of which is externally driven. It is shown that a presence of nonuniform charge distributions on the plates leads to a space-dependent frictional force, which enters into the equation of motion for the top driven plate. The equation displays a rich spectrum of dynamical behaviors: periodic stick-slip, erratic and intermittent motions, characterized by force fluctuations, and sliding above the critical velocity. Boundary lines separating different regimes of motion in a dynamical phase diagram are determined. The dependencies of the frictional force and regimes of motion on an electrolyte concentration, surface charge distribution and a thickness of the liquid layer are predicted.
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Daikhin, L., Urbakh, M. (2001). Effect of Electrostatic Interactions on Frictional Forces in Electrolytes. In: Bhushan, B. (eds) Fundamentals of Tribology and Bridging the Gap Between the Macro- and Micro/Nanoscales. NATO Science Series, vol 10. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0736-8_13
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DOI: https://doi.org/10.1007/978-94-010-0736-8_13
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