Abstract
The quasielastic scattering of laser light from nematic MBBA is studied utilizing homodyne procedures. The results stem from a comprehensive study of the half widths and areas of the "slow mode" peaks together with their temperature and angle dependence. The data taken at small angles yield the temperature-dependent ratios of the viscosity coefficients to curvature elastic constants for twist, bend, and splay. From these ratios, utilizing data of others, the temperature dependence of the twist elastic constant , and twist, splay, and bend viscosity coefficients , , and , respectively, are determined. From the data taken at large angles the values of and (which is found to be negative) are determined at a reduced temperature, .
- Received 19 August 1974
DOI:https://doi.org/10.1103/PhysRevA.11.1440
©1975 American Physical Society