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Pozycja Macroscopic model formulae describing anisotropic anchoring of nematic liquid crystals on solid substrates.(Wydawnictwo Politechniki Łódzkiej, 2015) Derfel, Grzegorz; Buczkowska, MariolaFormulae used for description of anchoring energy of nematic liquid crystal aligned on solid substrates are reviewed. They are based on macroscopic approach considering the concepts of the easy axis and of the anchoring strength parameters. Properties of the modified formula proposed in our earlier article are illustrated by exemplary plots which allows for comparison with other formulae. The modified formula describes the dependence of energy on the azimuthal and polar deviation of director from the easy axis and is valid qualitatively for deviation of any magnitude.