Helmholtz free energy of a multilayer system of highly charged plates immersed in an electrolyte

Autor:	Martin V. Smalley, Ikuo S. Sogami, Tadatomi Shinohara
Rok vydání:	2003
Předmět:	Chemistry Biophysics Electrolyte Condensed Matter Physics Molecular physics Ion symbols.namesake Mean field theory Helmholtz free energy Quantum mechanics Neumann boundary condition symbols Boundary value problem Surface charge Physical and Theoretical Chemistry Adiabatic process Molecular Biology
Zdroj:	Molecular Physics. 101:1883-1900
ISSN:	1362-3028 0026-8976
DOI:	10.1080/0026897031000112442
Popis:	The Helmholtz free energy of highly charged plates immersed in an electrolyte solution in a finite container is investigated using mean field theory. Exact solutions of the Poisson-Boltzmann equation under Dirichlet and Neumann boundary conditions lead to analytical expressions for the free energies. Adiabatic potentials of the charged plates, which are derived from the free energy, have long-range weak attractive parts and medium-range strong repulsive parts, irrespective of the type of boundary conditions. The repulsion results mainly from the osmotic pressure of the excess ions trapped between the plates by the large surface charges and the attraction arises essentially from an electric pull from the intermediate cloud of excess counterions shared by the plates.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c28632b64e555fe25b8af4fc718c2c26 https://doi.org/10.1080/0026897031000112442 Zobrazit plný text záznamu