论文标题
铁电列液晶热摩托车
Ferroelectric nematic liquid crystal thermo-motor
论文作者
论文摘要
展示并解释了放置在铁电列液晶式梗塞液滴下颗粒的热梯度诱导的圆形运动。与飓风和龙卷风不同，这些飓风和龙卷风是热电动机的主要例子，并且在湍流中显而易见，这里没有示踪剂颗粒的纹理似乎完全稳定地表明层流流。我们提供了一个简单的模型，表明铁电偏振的切向布置与垂直热梯度和流体的pyroleclectricition相结合，驱动示踪剂颗粒的旋转，这些示踪剂颗粒在流体中充满电。这些观察结果提供了一个有趣的例子，说明了流体铁电液晶的独特性质。
A thermal gradient-induced circular motion of particles placed on ferroelectric nematic liquid crystal sessile drops is demonstrated and explained. Unlike hurricanes and tornadoes that are the prime examples for thermal motors and where turbulent flows are apparent, here the texture without tracer particles appears completely steady indicating laminar flow. We provide a simple model showing that the tangential arrangement of the ferroelectric polarization combined with the vertical thermal gradient and the pyroelectricity of the fluid drives the rotation of the tracer particles that become electrically charged in the fluid. These observations provide a fascinating example of the unique nature of fluid ferroelectric liquid crystals.
