电场对胆甾相液晶的作用

THE ACTION OF ELECTRIC FIELD ON LIQUID CRYSTALS CHOLESTERIC PHASE

用统计物理的方法讨论了胆甾相液晶在垂直螺旋轴方向的电场作用下螺旋结构的变化，得到了螺距ｈ和阈值电场强度Ｅｃ的近似表达式。结果表明：ｈ和Ｅｃ与场强、液晶的本征螺距。

おhe variation of helix structure in liquid crystal cholesteric phase under the action of electric field which is perpendicular to the helix axis of liquid crystal cholesteric phase is discussed by the statistical theory method. The approximate formula of the pitch h and the threshold field Ec are obtained. It is shown that the h and Ec depend on the field strength E, the native pitch h0, the parameters of liquid crystal molecular structure and temperature.