Hydrodynamic origin of diffusion in nanopores

Bhatia, Suresh K. ; Nicholson, David (2003) Hydrodynamic origin of diffusion in nanopores Physical Review Letters, 90 (1). 016105_1-016105_4. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v90/i1/e016105

Related URL: http://dx.doi.org/10.1103/PhysRevLett.90.016105


We study the transport of a subcritical Lennard-Jones fluid in a cylindrical nanopore, using a combination of equilibrium and nonequilibrium as well as dual control volume grand canonical molecular dynamics methods. We show that all three techniques yield the same value of the transport coefficient for diffusely reflecting pore walls, even in the presence of viscous transport. We also demonstrate that the classical Knudsen mechanism is not manifested, and that a combination of viscous flow and momentum exchange at the pore wall governs the transport over a wide range of densities.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:2798
Deposited On:08 Oct 2010 11:56
Last Modified:17 May 2011 06:25

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