Drift–diffusion kinetics of a confined colloid
Language
en
Article de revue
This item was published in
Journal of Physics: Condensed Matter. 2010-04-16, vol. 22, n° 19, p. 195104
IOP Publishing
English Abstract
The drift–diffusion equation on a finite interval with reflecting boundary conditions is solved by Laplace transformation. The Green function is obtained as a series in powers of e−hu/D, where u is the drift velocity, D ...Read more >
The drift–diffusion equation on a finite interval with reflecting boundary conditions is solved by Laplace transformation. The Green function is obtained as a series in powers of e−hu/D, where u is the drift velocity, D the diffusion coefficient and h the width of the interval. In the drift-dominated regime hu/D 1, the first terms provide an exact solution in the limit of short and long times, and a good approximation in the intermediate regime. As a possible application, we discuss confined colloidal suspensions subjected to an external field.Read less <
English Keywords
Drift-diffusion kinetics
Colloids
Transport
Fokker-Planck-equation
Origin
Hal imported