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Title: Effective Electrodiffusion equation for non uniform nanochannels
Author: Marini-Bettolo-Marconi, Umberto
Melchionna, Simonne
Pagonabarraga Mora, Ignacio
Keywords: Química física
Camps elèctrics
Mecànica estadística
Polarització (Electricitat)
Physical and theoretical chemistry
Electric fields
Statistical mechanics
Polarization (Electricity)
Issue Date: 2013
Publisher: American Institute of Physics
Abstract: We derive a one dimensional formulation of the Planck-Nernst-Poisson equation to describe the dynamics of of a symmetric binary electrolyte in channels whose section is of nanometric section and varies along the axial direction. The approach is in the spirit of the Fick-Jacobs di fusion equation and leads to a system of coupled equations for the partial densities which depends on the charge sitting at the walls in a non trivial fashion. We consider two kinds of non uniformities, those due to the spatial variation of charge distribution and those due to the shape variation of the pore and report one and three-dimensional solutions of the electrokinetic equations.
Note: Reproducció del document publicat a:
It is part of: Journal of Chemical Physics, 2013, vol. 138, num. 24, p. 244107-1-244107-9
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ISSN: 0021-9606
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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