The microscopic theories which have been proposed for lyotropic liquid crystals are studied, in particular in connection with the model gas of hard rods. For sufficiently long rods most theories are equivalent to that of Onsager; for shorter rods no theory seems to have a very good claim to accuracy. The theory of Flory is shown to be untrustworthy. A series of experimental tests is proposed which would allow determination of the coefficients of the Onsager expansion; available experimental data are reviewed.
|Number of pages||25|
|Journal||Molecular Crystals and Liquid Crystals|
|State||Published - 1973|
Bibliographical noteFunding Information:
7 Supported by the National Science Foundation through a N.S.F. Postdoctoral Fellowship. Present Address : Department of Physics, University of Kentucky, Lexington, Ky. 40506.
Acknowledgements I would like to thank M. E. Fisher for suggesting this problem and for his guidance in its study. I am grateful to the National Science Foundation for their fellowship support. I would like to thank B. G. Nickel for a useful suggestion, and A. J. Bur, P. J. Flory, and A. Isihara for their correspondence.
Copyright 2018 Elsevier B.V., All rights reserved.
ASJC Scopus subject areas
- Engineering (all)