Anomalous Diffusion in Random Pores

J.C. LeeFollow

Document Type

Article

Publication Date

2-1-1998

Department

Physics and Astronomy

School

Mathematics and Natural Sciences

Abstract

Molecular dynamics simulations are performed for binary liquids confined in the pores of Vycor glass. The individual molecular motions are studied by computing F-s, the self-part of the concentration fluctuation autocorrelation function. The results for F-s(q,t) show that the diffusion is anomalous as its relaxation rate does not follow the usual q(2) dependence on the probing wave vector q. This is explained as a confining effect of the glass walls. (C) 1998 American Institute of Physics.

Publication Title

Journal of Chemical Physics

Volume

108

Issue

6

First Page

2265

Last Page

2268

Link to Full Text

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