Light Scattering through the Isotropic-Cholesteric Phase Transition of a Cholesteric Liquid Crystal
- 19 May 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 34 (20) , 1259-1262
- https://doi.org/10.1103/physrevlett.34.1259
Abstract
We have measured the Rayleigh intensity and linewidth in cholesteryl oleyl carbonate continuously through the cholesteric-isotropic phase transition. Above the phase transition the intensity data do not agree with the theory of de Gennes; we also do not observe the instability of the isotropic phase predicted by de Gennes. At the phase transition we observe two exponentials simultaneously which we associate with order-parameter and director fluctuations.Keywords
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