论文标题
nematics中的电荷，盐和柔韧性驱动的锚定效应
Charge-, salt- and flexoelectricity-driven anchoring effects in nematics
论文作者
论文摘要
我们研究了电动双层和柔韧性对一般列液体中锚定表面锚定的影响。在简化的模型中，我们证明了列内电解质的表面锚固强度如何受到表面电荷，散装离子浓度和/或柔韧性的影响，不仅有效地改变了锚固幅度的幅度，而且还改变了锚定类型的幅度，例如从平面到平面。特别是，我们设想通过在（筛选）表面电荷控制的足够强大的静电锚定锚固剂中的盐浓度来调整锚定强度，可以与非电压锚定竞争。由于表面电荷，离子和柔韧性，列明主管与新兴静电电位之间的竞争能量扭力耦合驱动。我们的发现提出了一种通过使用静电效应来影响表面锚定的方法，该效应可用于各个方面，包括在列液体中的胶体颗粒的自组装中，光学和显示模式以及传感。
We investigate the effects of electric double layers and flexoelectricity on the surface anchoring in general nematic fluids. Within a simplified model, we demonstrate for a nematic electrolyte how the surface anchoring strength can be affected by the surface charge, bulk ion concentration and/or flexoelectricity, effectively changing not only the magnitude of the anchoring but also the anchoring type, such as from planar to tilted. In particular, we envisage possible tuning of the anchoring strength by the salt concentration in the regime where sufficiently strong electrostatic anchoring, as controlled by the (screened) surface charge, can compete with the non-electrostatic anchoring. This effect is driven by the competing energetic-torque couplings between nematic director and the emergent electrostatic potential, due to surface charge, ions and flexoelectricity. Our findings propose a way of influencing surface anchoring by using electrostatic effects, which could be used in various aspects, including in the self-assembly of colloidal particles in nematic fluids, optical and display patterns, and sensing.
