Diffusion in pores and its dependence on boundary conditions

We study the influence of the boundary conditions at the solid-liquid interface on diffusion in a confined fluid. Using a hydrodynamic approach, we compute numerical estimates for the diffusion of a particle confined between two planes. Partial slip is shown to significantly influence the diffusion...

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Bibliographic Details
Published inJournal of physics. Condensed matter Vol. 17; no. 49; pp. S4075 - S4090
Main Authors Saugey, A, Joly, L, Ybert, C, Barrat, J L, Bocquet, L
Format Journal Article
LanguageEnglish
Published IOP Publishing 14.12.2005
IOP Publishing [1989-....]
Subjects
Condensed Matter
Materials Science
Physics
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Summary:We study the influence of the boundary conditions at the solid-liquid interface on diffusion in a confined fluid. Using a hydrodynamic approach, we compute numerical estimates for the diffusion of a particle confined between two planes. Partial slip is shown to significantly influence the diffusion coefficient near a wall. Analytical expressions are derived in the low and high confinement limits, and are in good agreement with numerical results. These calculations indicate that diffusion of tagged particles could be used as a sensitive probe of the solid-liquid boundary conditions.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/17/49/005