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Helical structure and threshold voltage of cholesteric‐nematic phase change at different anchoring conditions
Author(s) -
Hauck G.,
Koswig H. D.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170221023
Subject(s) - anchoring , liquid crystal , planar , materials science , orientation (vector space) , voltage , surface (topology) , condensed matter physics , phase (matter) , threshold voltage , optics , substrate (aquarium) , molecule , chemical physics , optoelectronics , chemistry , geometry , physics , mathematics , structural engineering , computer graphics (images) , quantum mechanics , organic chemistry , transistor , oceanography , computer science , engineering , geology
The helical structure of cholesteric mixed systems and their electro‐optical behaviour are studied at planar and pretilted surface orientation. The results indicate that the influence of the forces of wall orientation is decreased by the helical structure. To prove this model strong and weak anchoring conditions of the molecules in the cholesteric mixture at the substrate surface are realized. Also the behaviour of the electro‐optical threshold voltage at different surface conditions supports the assumptions concerning the helical structure.