论文标题
电场诱导的铁电列液晶中的界面不稳定
Electric field-induced interfacial instability in a ferroelectric nematic liquid crystal
论文作者
论文摘要
提出了对外部施加电场中铁电列液晶液晶的无柄和流体桥的研究。发现高于阈值，流体与空气的界面经历了指法不稳定性或分支，类似于电场中带电的液滴或圆形落水型不稳定性在磁场中观察到的瑞利型不稳定性。在各种几何形状中确定阈值电压的频率依赖性。发现列表主管和铁电偏振方向沿着手指的尖端指向似乎相互排斥的指向，表明铁电偏振基本上与导演平行。与瑞利和圆形落水型不稳定性有关的结果是解释的。
Studies of sessile droplets and fluid bridges of a ferroelectric nematic liquid crystal in externally applied electric fields are presented. It is found that above a threshold, the interface of the fluid with air undergoes a fingering instability or ramification, resembling to Rayleigh-type instability observed in charged droplets in electric fields or circular drop-type instabilities observed in ferromagnetic liquids in magnetic field. The frequency dependence of the threshold voltage was determined in various geometries. The nematic director and ferroelectric polarization direction was found to point along the tip of the fingers that appear to repel each other, indicating that the ferroelectric polarization is essentially parallel to the director. The results are interpreted in connection to the Rayleigh and circular drop-type instabilities.
