Title

Anomalous Diffusion in Random Pores

Authors

J.C. Lee

Document Type

Article

Publication Date

2-1-1998

Department

Physics and Astronomy

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