Like-charge attraction in a slit system: pressure components for the primitive model and molecular solvent simulations
(2008) 5th Annual Meeting of the International-Society-for-Imaging-in-the-Eye 20(49).- Abstract
- We have recently reported Monte Carlo simulations for a system of two infinite like-charged plates in a dipolar fluid solvent (Pegado et al 2008 J. Chem. Phys. at press). The pressure as a function of plate separation qualitatively reproduces the ion-ion correlation attraction picture seen in primitive model studies, where the solvent only enters the picture implicitly through its dielectric constant epsilon(r), scaling all charge-charge interactions. Here we analyse in detail the different components of the pressure between the two plates. This shows that, by changing any of the relevant parameters (counterion valency, surface charge density or dielectric screening), the appearance or increase of a pressure minimum is connected to the... (More)
- We have recently reported Monte Carlo simulations for a system of two infinite like-charged plates in a dipolar fluid solvent (Pegado et al 2008 J. Chem. Phys. at press). The pressure as a function of plate separation qualitatively reproduces the ion-ion correlation attraction picture seen in primitive model studies, where the solvent only enters the picture implicitly through its dielectric constant epsilon(r), scaling all charge-charge interactions. Here we analyse in detail the different components of the pressure between the two plates. This shows that, by changing any of the relevant parameters (counterion valency, surface charge density or dielectric screening), the appearance or increase of a pressure minimum is connected to the same components in both the primitive model and the dipolar solvent model. Decomposing the pressure is helpful in distinguishing between solvent depletion or packing effects and the coexisting correlation attraction. Although the pressure can be evaluated at any plane parallel to the surfaces, the analysis of the pressure at the midplane provides the best physical insight. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1283078
- author
- Pegado, Luis LU ; Jönsson, Bo LU and Wennerström, Håkan LU
- organization
- publishing date
- 2008
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- JOURNAL OF PHYSICS-CONDENSED MATTER
- volume
- 20
- issue
- 49
- publisher
- IOP Publishing
- conference name
- 5th Annual Meeting of the International-Society-for-Imaging-in-the-Eye
- conference dates
- 2007-05-04
- external identifiers
-
- wos:000260859300036
- scopus:58149343830
- ISSN
- 0953-8984
- DOI
- 10.1088/0953-8984/20/49/494235
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Theoretical Chemistry (S) (011001039), Physical Chemistry 1 (S) (011001006)
- id
- 83b2265b-8d58-4925-b450-b6c42eccfd2d (old id 1283078)
- date added to LUP
- 2016-04-01 14:10:30
- date last changed
- 2023-01-04 03:02:34
@inproceedings{83b2265b-8d58-4925-b450-b6c42eccfd2d,
abstract = {{We have recently reported Monte Carlo simulations for a system of two infinite like-charged plates in a dipolar fluid solvent (Pegado et al 2008 J. Chem. Phys. at press). The pressure as a function of plate separation qualitatively reproduces the ion-ion correlation attraction picture seen in primitive model studies, where the solvent only enters the picture implicitly through its dielectric constant epsilon(r), scaling all charge-charge interactions. Here we analyse in detail the different components of the pressure between the two plates. This shows that, by changing any of the relevant parameters (counterion valency, surface charge density or dielectric screening), the appearance or increase of a pressure minimum is connected to the same components in both the primitive model and the dipolar solvent model. Decomposing the pressure is helpful in distinguishing between solvent depletion or packing effects and the coexisting correlation attraction. Although the pressure can be evaluated at any plane parallel to the surfaces, the analysis of the pressure at the midplane provides the best physical insight.}},
author = {{Pegado, Luis and Jönsson, Bo and Wennerström, Håkan}},
booktitle = {{JOURNAL OF PHYSICS-CONDENSED MATTER}},
issn = {{0953-8984}},
language = {{eng}},
number = {{49}},
publisher = {{IOP Publishing}},
title = {{Like-charge attraction in a slit system: pressure components for the primitive model and molecular solvent simulations}},
url = {{http://dx.doi.org/10.1088/0953-8984/20/49/494235}},
doi = {{10.1088/0953-8984/20/49/494235}},
volume = {{20}},
year = {{2008}},
}