Determination of Ki (i = 1–3) and μj (j = 2–6) in 5CB by observing the angular dependence of Rayleigh line spectral widths

Using Parodi's relation, all of the Leslie viscosity coefficients, except μ1, together with the Frank elastic constants have been measured successfully by the photon correlation spectroscopy of Rayleigh scattered light. The values so determined are in good agreement with those previously determined from shear flow experiments by Chmielewski and by Skarp et al. The polar angle dependence of mode 1 spectral width is proposed as a novel method for the measurement of μ1 and for the experimental confirmation of Parodi's relation.