Charge-Fluctuation-Induced Non-analytic Bending Rigidity
Soft Condensed Matter
2016-08-31 v2 Materials Science
Abstract
In this Letter, we consider a neutral system of mobile positive and negative charges confined on the surface of curved films. This may be an appropriate model for: i) a highly charged membrane whose counterions are confined to a sheath near its surface; ii) a membrane composed of an equimolar mixture of anionic and cationic surfactants in aqueous solution. We find that the charge fluctuations contribute a non-analytic term to the bending rigidity that varies logarithmically with the radius of curvature. This may lead to spontaneous vesicle formation, which is indeed observed in similar systems.
Cite
@article{arxiv.cond-mat/9801275,
title = {Charge-Fluctuation-Induced Non-analytic Bending Rigidity},
author = {A. W. C. Lau and P. Pincus},
journal= {arXiv preprint arXiv:cond-mat/9801275},
year = {2016}
}
Comments
Revtex, 9 pages, no figures, submitted to PRL