Mean-field theory of active electrolytes: Dynamic adsorption and overscreening

Derek Frydel and Rudolf Podgornik
Phys. Rev. E 97, 052609 – Published 14 May 2018

Abstract

We investigate active electrolytes within the mean-field level of description. The focus is on how the double-layer structure of passive, thermalized charges is affected by active dynamics of constituting ions. One feature of active dynamics is that particles adhere to hard surfaces, regardless of chemical properties of a surface and specifically in complete absence of any chemisorption or physisorption. To carry out the mean-field analysis of the system that is out of equilibrium, we develop the “mean-field simulation” technique, where the simulated system consists of charged parallel sheets moving on a line and obeying active dynamics, with the interaction strength rescaled by the number of sheets. The mean-field limit becomes exact in the limit of an infinite number of movable sheets.

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  • Received 1 March 2018

DOI:https://doi.org/10.1103/PhysRevE.97.052609

©2018 American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & ThermodynamicsPhysics of Living SystemsPolymers & Soft Matter

Authors & Affiliations

Derek Frydel

  • Department of Chemistry, Federico Santa Maria Technical University, Campus San Joaquín, Santiago, Chile

Rudolf Podgornik

  • School of Physical Sciences and Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Department of Physics, Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia; and Department of Theoretical Physics, J. Stefan Institute, 1000 Ljubljana, Slovenia

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Vol. 97, Iss. 5 — May 2018

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