PhysRevE.80.021409.pdf (482.81 kB)
Selectivity in binary fluid mixtures: static and dynamical properties
journal contribution
posted on 2014-10-08, 13:08 authored by Roland Roth, Markus Rauscher, Andrew ArcherAndrew ArcherSelectivity of particles in a region of space can be achieved by applying external potentials to influence the
particles in that region. We investigate static and dynamical properties of size selectivity in binary fluid
mixtures of two particles sizes. We find that by applying an external potential that is attractive to both kinds of
particles, due to crowding effects, this can lead to one species of particles being expelled from that region,
while the other species is attracted into the region where the potential is applied. This selectivity of one species
of particle over the other in a localized region of space depends on the density and composition of the fluid
mixture. Applying an external potential that repels both kinds of particles leads to selectivity of the opposite
species of particles to the selectivity with attractive potentials. We use equilibrium and dynamical densityfunctional
theory to describe and understand the static and dynamical properties of this striking phenomenon.
Selectivity by some ion channels is believed to be due to this effect.
Funding
A.J.A. acknowledges financial support from the British Council, funded under the ARC program, and also from RCUK. M.R. acknowledges financial support from the priority program SPP 1164 of the Deutsche Forschungsgemeintschaft. M.R. and R.R. acknowledge financial support from DAAD funded under the PPP program.
History
School
- Science
Department
- Mathematical Sciences
Published in
PHYSICAL REVIEW EVolume
80Issue
2Pages
? - ? (10)Citation
ROTH, R., RAUSCHER, M. and ARCHER, A.J., 2009. Selectivity in binary fluid mixtures: static and dynamical properties. Physical Review E, 80 (2), 021409.Publisher
© The American Physical SocietyVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2009Notes
This article was published in the journal, Physical Review E [© The American Physical Society].ISSN
1539-3755Publisher version
Language
- en