Interactions between zwitterionic membranes in complex electrolytes

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buir.contributor.authorBüyükdağlı, Şahin
dc.citation.epage012806-15en_US
dc.citation.issueNumber1en_US
dc.citation.spage012806-1en_US
dc.citation.volumeNumber102en_US
dc.contributor.authorBüyükdağlı, Şahin
dc.contributor.authorPodgornik, R.
dc.date.accessioned2021-03-02T09:08:07Z
dc.date.available2021-03-02T09:08:07Z
dc.date.issued2020
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe investigate the electrostatic interactions of zwitterionic membranes immersed in mixed electrolytes composed of mono- and multivalent ions. We show that the presence of monovalent salt is a necessary condition for the existence of a finite electrostatic force on the membrane. As a result, the mean-field membrane pressure originating from the surface dipoles exhibits a nonuniform salt dependence, characterized by an enhancement for dilute salt conditions and a decrease at intermediate salt concentrations. On addition of multivalent cations to the submolar salt solution, the separate interactions of these cations with the opposite charges of the surface dipoles makes the intermembrane pressure more repulsive at low membrane separation distances and strongly attractive at intermediate distances, resulting in a discontinuous like-charge binding transition followed by the membrane binding transition. By extending our formalism to account for correlation corrections associated with large salt concentrations, we show that membranes of high surface dipole density immersed in molar salt solutions may undergo a membrane binding transition even without the multivalent cations. Hence, the tuning of the surface polarization forces by membrane engineering can be an efficient way to adjust the equilibrium configuration of dipolar membranes in concentrated salt solutions.en_US
dc.description.provenanceSubmitted by Zeynep Aykut (zeynepay@bilkent.edu.tr) on 2021-03-02T09:08:07Z No. of bitstreams: 1 Interactions_between_zwitterionic_membranes_in_complex_electrolytes.pdf: 2654296 bytes, checksum: eb8e4d3da9ff80a8660f48dde03485de (MD5)en
dc.description.provenanceMade available in DSpace on 2021-03-02T09:08:07Z (GMT). No. of bitstreams: 1 Interactions_between_zwitterionic_membranes_in_complex_electrolytes.pdf: 2654296 bytes, checksum: eb8e4d3da9ff80a8660f48dde03485de (MD5) Previous issue date: 2020en
dc.identifier.doi10.1103/PhysRevE.102.012806en_US
dc.identifier.issn2470-0045
dc.identifier.urihttp://hdl.handle.net/11693/75699
dc.language.isoEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttps://dx.doi.org/10.1103/PhysRevE.102.012806en_US
dc.source.titlePhysical Review Een_US
dc.subjectElectrostatic interactionsen_US
dc.subjectMembranesen_US
dc.subjectVan der Waals interactionen_US
dc.titleInteractions between zwitterionic membranes in complex electrolytesen_US
dc.typeArticleen_US

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