Decoration of disclinations by solidification-induced band texture and focal-conic texture for a low-molar-mass liquid crystal |
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Authors: | Qincui Gu Changcheng Wu Shouxi Chen Yong Huang |
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Institution: | (1)State Key Laboratory of Polymer Physics and Chemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences ,Beijing 100080 ,China;
(2)Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Chinese Academy of Sciences ,Guangzhou 510650 ,China |
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Abstract: | Two decoration techniques, solidification-induced band texture decora tion and focal-conictexture decoration, have been established to exhibit the director field of disclinations in a low-molar-mass methacrylate liquid crystal. The disclinations with strength s = 1/2 and s = ±1 are observed by the two decor ation methods. For the solidification-induced band texture decoration, the molecular orientation is perpendicular to the direction of the band. While for focal- conictexture decoration, it has been proved by the results of IR dichroism that the direction of the director is parallel to the direction of the focal-conic. Therefore, the sketch map of the molecular director filed can be mapped according to the morphological pattern of the solidification-induced band textureor focal-conic texture. |
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Keywords: | decoration disclination solidification-induced band texture focal-c onic texture liquid crystal |
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