Abstract
A photopyroelectric setup, which allows the study of the thermal behavior and the structural evolution of 8CB liquid crystal at the first-order nematic–isotropic phase transition, is presented. It is shown that the kinetics of the transition in liquid-crystal films are not the same on heating and cooling, and a quantitative determination of the width of the two-phase coexistence region is reported. A correlation between the photopyroelectric signal and the liquid-crystal morphology in the coexistence region has been found.
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