Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session M71: Poster Session III (11:15am - 2:15pm)
Wednesday, March 4, 2020
Room: Exhibit Hall C/D
Abstract: M71.00183 : Statistical mechanical sum rules for active colloids at surfaces - a touch of equilibrium*
(Univ. Paris-Sud, Univ. Paris-Saclay)
(Université de Fribourg)
More precisely, we find within each model that the slope of the pressure as a function of the curvature equals the surface tension and adsorption (up to an effective temperature scale) on a planar wall. Intriguingly, the explicit value of these coefficients is model-dependent, which can be explained by the different velocity distributions.
We also discuss the influence of interactions and find that the effect of curvature on the wall pressure is reduced when increasing the density. Within numerical accuracy, the equality of the slope of the pressure and the planar surface tension appears to hold at finite density.
Publication: R. Wittmann, F. Smallenburg and J. M. Brader, J. Chem. Phys. 150, 174908 (2019).
*Funding by the DFG: LO 418/20-2
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