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Abstract
The wave-number spectrum of director orientational fluctuations in nematic liquid crystal with interface anchoring is found both for twist-bend and splay-bend deformations and homeotropic alignment. We show that the anchoring energy can be determined from the line broadening due to quasi-elastic Rayleigh scattering from these fluctuations. Our theoretical results are used to estimate the anchoring strength of 5 CB homeotropically aligned by DMOAP silane coated glass interface.