Effect of YBa2Cu3O7-x thin films on the textures and orientational properties of liquid crystals

Surface-induced and oriented textures of smectic liquid crystals: effect of thin films

“…We would like to note that, the YBCO thin films with 200-300 Å thicknesses have sufficient orientational effect also on the nematic mesophase, taking place in BBBA liquid crystal (table 1). Earlier was shown that, sinusoidal surfaces could stimulate the origin of uniform and stable oriented textures of nematic mesophase [3,4,18,20,46,[58][59][60]. As results of our investigations showed, this type of surfaces have anagous stimulating effect also on the smectic A mesophase.…”

“…In this work, we have interested in the effect of the YBa 2 Cu 3 O 7−x (YBCO) complex compound thin films, coated by DC magnetron sputtering system, on the morphological, orientational, thermotropical and optical properties of smectic liquid crystals. The effect of these thin films on the physical properties of thermotropic and lyotropic nematic mesophases have earlier been investigated by us [46,47]. The investigations have shown that, these films have sufficient orientational effect on the investigated nematics.…”

“…The problems connected with influences and boundary conditions of different surfaces on macroscopic and microscopic properties of liquid crystals have special importance in physics, physical-chemistry and application of liquid crystals [1][2][3][4][5][6][7]. These problems are very important because in all physical experiments, liquid crystals are in immediate contact with solid surfaces having different character.…”