CONSEQUENCES OF BOND-ORIENTATIONAL ORDER ON THE MACROSCOPIC ORIENTATION PATTERNS OF THIN TILTED HEXATIC LIQUID-CRYSTAL FILMS
CONSEQUENCES OF BOND-ORIENTATIONAL ORDER ON THE MACROSCOPIC ORIENTATION PATTERNS OF THIN TILTED HEXATIC LIQUID-CRYSTAL FILMS
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DOI：
10.1103/physrevlett.56.1819
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发表时间：
1986-04-28
影响因子：
8.6
通讯作者：
MEYER, RB
中科院分区：
文献类型：
--
作者：
DIERKER, SB;PINDAK, R;MEYER, RB
利用退偏激光反射显微镜，在倾斜六角液晶薄膜中观察到了由键取向有序性引起的独特织构缺陷。键取向弹性的温度依赖性可以从这些纹理图案推导出来，并与二维熔融理论定性一致。分子手性和膜厚度对缺陷纹理的影响也报告沿着与观察二维结晶相的结晶化。
By use of depolarized laser relection microscopy, unique textural defects have been observed in thin tilted hexatic liquid-crystal films which result from their bond-orientational order. The temperature dependence of the bond-orientational elasticity can be deduced from these textural patterns and is in qualitative agreement with the theory of two-dimensional melting. The effects of molecular chirality and film thickness on the defect textures is also reported along with observations on the polygonization of the two-dimensional crystalline phase.