The determination of the order parameters of nematic liquid crystals by mean field extrapolation

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Abstract
An improved method for the determination of the order parameter of a nematic liquid crystal from the anisotropy in its macroscopic physical properties is described. This method, which exploits an extrapolation technique based on the mean field theory of nematic ordering, is compared with the more conventional Haller extrapolation technique and is found to give much more consistent and reliable results