Bo. Myrvold et al., TEMPERATURE-DEPENDENCE OF THE PRETILT ANGLE FOR LIQUID-CRYSTALS - A COMPARISON BETWEEN THEORIES AND EXPERIMENTS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 259, 1995, pp. 115-132
Data for the temperature dependence of the pretilt angles for nematic
liquid crystal mixtures on a polyimide surface are compared with diffe
rent theories. It is found that our recently proposed population distr
ibution model can explain all the observations well, when we assume a
Boltzmann distribution between the different states. The only exceptio
n is one sample with azoxybenzenes, which undergo chemical changes.