Wall mediated transport in confined spaces: exact theory for low density

Jepps, Owen G. ; Bhatia, Suresh K. ; Searles, Debra J. (2003) Wall mediated transport in confined spaces: exact theory for low density Physical Review Letters, 91 (12). 126102_1-126102_4. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v91/i12/e126102

Related URL: http://dx.doi.org/10.1103/PhysRevLett.91.126102

Abstract

We present a theory for the transport of molecules adsorbed in slit and cylindrical nanopores at low density, considering the axial momentum gain of molecules oscillating between diffuse wall reflections. Good agreement with molecular dynamics simulations is obtained over a wide range of pore sizes, including the regime of single-file diffusion where fluid-fluid interactions are shown to have a negligible effect on the collective transport coefficient. We show that dispersive fluid-wall interactions considerably attenuate transport compared to classical hard sphere theory.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:2877
Deposited On:09 Oct 2010 05:39
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