Fluid transport in partially filled porous sol-gel silica glass

Franco D’Orazio, Sankar Bhattacharja, William P. Halperin, and Rosario Gerhardt
Phys. Rev. B 42, 6503 – Published 1 October 1990
PDFExport Citation

Abstract

Measurements of low-frequency ac electrical conductivity of a porous glass filled with different amounts of a saline solution are compared with the self-diffusion coefficient of water measured in the same sample, reported previously [F. D’Orazio et al., Phys. Rev. Lett. 63, 43 (1989)]. The two transport parameters are consistently related through the Einstein relation under saturation conditions. A more complex picture is revealed for the unsaturated sample, since the presence of a vapor phase enhances the self-diffusion coefficient. Conductivity experiments allow an independent assessment of the contribution to self-diffusion from the liquid phase. However, a comparison between the two experiments indicates that the role of the vapor phase is not well understood.

  • Received 15 March 1990

DOI:https://doi.org/10.1103/PhysRevB.42.6503

©1990 American Physical Society

Authors & Affiliations

Franco D’Orazio, Sankar Bhattacharja, and William P. Halperin

  • Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208-3112

Rosario Gerhardt

  • Center for Ceramic Research, Rutgers University, P.O. Box 909, Piscataway, New Jersey 08855-0909

References (Subscription Required)

Click to Expand
Issue

Vol. 42, Iss. 10 — 1 October 1990

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×