Open AccessSURFACE PHASE TRANSITION OF NEMATICS INDUCED BY SURFACE INTERACTION
Author(s) -
Hong Liu
Publication year - 2000
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.49.1321
Subject(s) - anchoring , materials science , liquid crystal , surface (topology) , phase transition , phase (matter) , condensed matter physics , plane (geometry) , range (aeronautics) , optics , composite material , physics , geometry , optoelectronics , mathematics , quantum mechanics , structural engineering , engineering
Using Ritz method in obtaining the surface order parameters,we obtained a phase transition from Bc,a biaxial nematic along the film normal,to phase B a,a biaxial phase along the axis in the film plane.The result shows t hat as the biaxial part of the anchoring strength increases,the mechanism of the occurrence of Ba changes from temperature decreasing to surface anch oring.Within a certain range of uniaxial anchoring strength α,increasing α wil l make Ba occur at a higher temperature while further increasing of α will make the liquid crystal reenter Bc from Ba.