Abstract
The effect of the solid surface on the properties of liquid crystal films was studied. The results show that the structure of such films depends strongly on the kind of solid support. An additional phase transition, other than solid-nematic and nematic-isotropic liquid, has been found in films of liquid crystals on a graphite surface. At temperatures higher than the nematic-isotropic liquid transition, the surface film on silica gel is probably the monolayer composed of horizontal molecules. The structure of the surface film on graphite is more complicated.
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