Statistical–mechanical theory of self-diffusion in dilute suspensions of macroions

Michio Tokuyama, Takaaki Furubayashi and Junichi Kawamura

Physica A: Statistical Mechanics and its Applications, 2017, vol. 486, issue C, 681-700

Abstract: Self-diffusion in dilute suspensions of macroions is studied theoretically based on the nonlinear non-Markov Langevin equations for macroions recently derived by one of the present authors (M.T.). Not only the short-time self-diffusion coefficient of macroion but also its long-time self-diffusion coefficient are then found analytically as a function of charge and volume fraction. The theoretical results, including a crossover map in charge–volume fraction plane, are then tested by the Brownian-dynamics simulations on macroions and small ions. Thus, they are shown to agree with the simulation results well within error.

Keywords: Dilute suspension; Langevin equation; Long-time self-diffusion coefficient; Macroion; Short-time self-diffusion coefficient (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:486:y:2017:i:c:p:681-700

DOI: 10.1016/j.physa.2017.05.064

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