Ionic Capillary Evaporation in Weakly Charged Nanopores

Sahin Buyukdagli, Manoel Manghi, and John Palmeri
Phys. Rev. Lett. 105, 158103 – Published 6 October 2010

Abstract

Using a variational field theory, we show that an electrolyte confined to a neutral cylindrical nanopore traversing a low dielectric membrane exhibits a first-order ionic liquid-vapor pseudo-phase-transition from an ionic-penetration “liquid” phase to an ionic-exclusion “vapor” phase, controlled by nanopore-modified ionic correlations and dielectric repulsion. For weakly charged nanopores, this pseudotransition survives and may shed light on the mechanism behind the rapid switching of nanopore conductivity observed in experiments.

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  • Received 9 April 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.158103

© 2010 The American Physical Society

Authors & Affiliations

Sahin Buyukdagli, Manoel Manghi, and John Palmeri

  • Laboratoire de Physique Théorique - IRSAMC, CNRS and Université de Toulouse, UPS, F-31062 Toulouse, France

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Issue

Vol. 105, Iss. 15 — 8 October 2010

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