Critical behavior in an electric-field-induced anchoring transition in a liquid crystal.
Critical behavior in an electric-field-induced anchoring transition in a liquid crystal.
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液晶中电场引起的锚定转变的关键行为。
DOI：
10.1103/physreve.86.010701
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发表时间：
2012
影响因子：
2.4
通讯作者：
Hideo Takezoe
中科院分区：
文献类型：
--
作者：
Satoshi Aya (謝暁晨);Khoa V. Le;Yuji Sasaki;Fumito Araoka;Ken Ishikawa;Hideo Takezoe
本文报道了在一阶锚定转变温度附近的电场作用下液晶的锚定转变，表现为平面态和垂直态。通过偏光显微镜结合延迟、开关和介电测量，得到了三个重要的观察结果：（1）在电场驱动下，从到的锚定转变是一级的，其阈值场强随温度的升高而降低：（2）向取向转变的膜层厚度随温度的升高而增加;以及（3）两个参数的温度依赖性由幂律很好地描述。
We report an anchoring transition of a liquid crystal under the influence of an electric field (field) in the vicinity of a first-order anchoring transition (ATr) temperature showing bistable homeotropic () and planar () states. By means of polarizing microscopy combined with retardation and switching and dielectric measurements, three important observations were made: (1) The anchoring transition fromtodriven by anfield is first order with a threshold-field strength, which decreases with increasing temperature; (2) the thickness of thelayer that is to be converted to theorientation increases toward ATr temperature; and (3) the temperature dependence of both parameters is well described by a power law.