Analysis of pitch–concentration dependences in some binary and ternary liquid crystal mixtures

Utilizing a general equation in which pitch in a mixture of liquid crystals is a quadratic function of the number densities of component molecules of given molecular twisting powers, we treat two special cases: binary cholesteric mixtures and a ternary mixture of two cholesteric and one nematic compounds. Experimental data are shown to be adequately described by the equation over the entire concentration range.