Light-Scattering Study of the Dynamical Behavior of Ordering just above the Phase Transition to a Cholesteric Liquid Crystal
- 10 April 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 28 (15), 955-958
- https://doi.org/10.1103/physrevlett.28.955
Abstract
Rayleigh light scattering was observed with photon-counting techniques in the isotropic phase of cholesteryl 2-(2-ethoxyethoxy) ethyl carbonate just above the transition temperature to a cholesteric liquid crystal. Both the temperature and wave-vector dependences of linewidth and intensity were measured. The data are in good agreement with the dynamical behavior of short-range order described by an extension of the Landau-de Gennes theory. Bragg-interference fringes due to sizable cholesteric-type ordering were observed in the isotropic phase near the transition point.Keywords
This publication has 7 references indexed in Scilit:
- Short Range Order Effects in the Isotropic Phase of Nematics and CholestericsMolecular Crystals and Liquid Crystals, 1971
- Pretransitional Phenomena in the Isotropic Phase of a Nematic Liquid CrystalPhysical Review Letters, 1970
- Effects of Order and Fluctuations on theNMR in a Liquid CrystalPhysical Review Letters, 1970
- Critical Slowing of Fluctuations in a Nematic Liquid CrystalJournal of Applied Physics, 1970
- Phenomenology of short-range-order effects in the isotropic phase of nematic materialsPhysics Letters A, 1969
- Heats of transition for some cholesteryl esters by differential scanning calorimetryThe Journal of Physical Chemistry, 1967
- Behavior of Liquid-Crystal Compounds Near the Isotropic-Anisotropic TransitionThe Journal of Chemical Physics, 1956