Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.366, 1995-2001, 2001
Direct observation of the orientational fluctuations in a nematic liquid crystal with a high-speed camera
The orientational fluctuations in a homogeneously aligned nematic liquid crystal were successfully observed with a high-speed video camera. From the series of images obtained, first the spatial Fourier transformation of each image was computed and then the time correlation function at each wave number was calculated. A theory to analyse the results was developed and by using it the ratios of the elastic constant to the viscosity were obtained.