Dynamics of a driven probe molecule in a liquid monolayer

Details Dynamics of a driven probe molecule in a liquid monolayer Dynamics of a driven probe molecule in a liquid monolayer

1997-10-29

arxiv.org/abs/cond-mat/9710317v1

Europhys. Lett. 38 (7), 527 (1997)

Physics

Condensed Matter

Soft Condensed Matter

Latex, 7 pages, 1 figure

Scientific paper

We study dynamics of a probe molecule, driven by an external constant force in a liquid monolayer on top of solid surface. In terms of a microscopic, mean-field-type approach, we calculate the terminal velocity of the probe molecule. This allows us to establish the analog of the Stokes formula, in which the friction coefficient is interpreted in terms of the microscopic parameters characterizing the system. We also determine the distribution of the monolayer particles as seen from the stationary moving probe molecule and estimate the self-diffusion coefficient for diffusion in a liquid monolayer.

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