Ionic Capillary Evaporation in Weakly Charged Nanopores

被引：40

作者：

Buyukdagli, Sahin ^{[1
]}

Manghi, Manoel

Palmeri, John

机构：

[1] CNRS, IRSAMC, Phys Theor Lab, F-31062 Toulouse, France

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 15期

关键词：

SYSTEMS; PORES; CHANNELS; OSCILLATIONS; EXCLUSION; MEMBRANES; FLUID; GAS;

D O I：

10.1103/PhysRevLett.105.158103

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：4

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