Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom.
Phys Rev Lett. 2009 Dec 18;103(25):257803. doi: 10.1103/PhysRevLett.103.257803.
We introduce a novel imaging technique adopting remote focusing for resolving the axial dynamics in the director field for liquid crystals. The high axial time resolution of our approach is demonstrated by imaging directly the evolution of the director field for an initially splayed nematic layer subject to a sudden voltage pulse. Images of the switching dynamics are presented, revealing transient state director configurations and changes in topology of the liquid crystal layer.
我们介绍了一种采用远程聚焦的新型成像技术，用于解析液晶中指向矢场的轴向动力学。我们的方法具有很高的轴向时间分辨率，通过对初始倾斜向列层在突然施加电压脉冲后的指向矢场的演化进行直接成像，证明了这一点。我们给出了开关动力学的图像，揭示了瞬态指向矢配置和液晶层拓扑结构的变化。
