Hostname: page-component-848d4c4894-2pzkn Total loading time: 0 Render date: 2024-06-10T07:04:51.562Z Has data issue: false hasContentIssue false
  • English
  • Français

Electrorheological Fluids: Structure Formation, Relaxation, and Destruction

Published online by Cambridge University Press:  25 February 2011

Thomas C. Halsey
Thomas C. Halsey*
Affiliation:
The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637
Get access

Abstract

In a strong electric field, the qualitative behavior of electrorheological fluids is dominated by the dipolar interactions between the colloidal particles. When thermal effects can be ignored, the ground state of a system of dipolar particles is an ordered solid. However, long-range ordered structures are rarely seen in experiment. When a high electric field is applied to a fluid, dielectric columns oriented parallel to the field rapidly form. The relaxation of these columns is a much slower process. I calculate the shape of the columns formed and the time scale for the relaxation of the columnar structure. I also discuss how this structure formation is altered in the presence of a shear flow.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 248: Symposium O – Complex Fluids , 1991 , 217
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Rosensweig, R.E., Ferrohydrodynamics (Cambridge University Press, New York, 1985).Google Scholar
2. Reich, D.H., Rosenbaum, T.F., Aeppli, G., and Guggenheim, H.J., Phys. Rev. B, 34, 4956 (1986).Google Scholar
3. Cast, A.P. and Zukoski, C.F., Adv. Colloid Interface Sci. 30, 153 (1989).Google Scholar
4. Halsey, T.C. and Toor, W., Phys. Rev. Letts. 65, 2820 (1990).Google Scholar
5. Fröhlich, H., Theory of Dielectrics, 2nd ed. (Oxford University Press, New York, 1986) Chapter 2.Google Scholar
6. Tao, R. and Sun, J.M., Phys. Rev. Letts. 67, 398 (1991).CrossRefGoogle Scholar
7. Chen, T.-j., Zitter, R.N., and Tao, R., unpublished.Google Scholar
8. Toor, W.R. and Halsey, T.C., unpublished.Google Scholar
9. Landau, L.D., Lifshitz, E.M., and Pitaevski, L.P., Electrodynamics of Continuous Media, 2nd ed. (Pergamon Press, New York, 1984) Chapter 2.Google Scholar
10. Toor, W., unpublished.Google Scholar
11. Halsey, T.C. and Toor, W.R., J. Stat. Phys. 61, 1257 (1990).Google Scholar
12. Keesom, W.H., Phys. Z. 22, 129 (1921); J. Mahanty and B.W. Ninham, Dispersion Forces (Academic Press, San Francisco, 1976) 1-33.Google Scholar
13. Klingenberg, D.J. and Zukoski, C.F., Langmuir 6, 15 (1990).Google Scholar
14. Halsey, T.C., Martin, J.E., and Adolf, D., unpublished.Google Scholar
15. Jeffery, G.B., Proc. Roy. Soc. (London) A, 102 161 (1922).Google Scholar