Abstract

Laser-induced hydrodynamic (LIH) motions in nematic liquid crystal (NLC) which is an initially oriented hybrid have been studied theoretically. For the direction when the flow velocity is directed out of the “flexible ribbon’s” curvature, it brings an increase of the curvature. But when the velocity has the opposite direction, we have two different cases depending on the surface anchoring energies. When there is a strong boundary condition (anchoring energy >10^–1 erg/cm²) on the planar oriented wall, and there is a week boundary condition (anchoring energy ≈10^–3 erg/cm²) on the homeotropic oriented wall, the molecules of a liquid crystal (LC) take the direction of the flow. “Flexible ribbon’s” curvature is reversed when is given a week boundary condition on the planar oriented wall and on the homeotropic oriented wall is given strong boundary condition.

中文翻译：

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激光诱导流体动力重定向的体积膨胀机制

摘要

已从理论上研究了向列液晶 (NLC) 中的激光诱导流体动力学 (LIH) 运动，NLC 是一种初始取向的混合体。对于流速指向“柔性带”曲率之外的方向，会带来曲率的增加。但是当速度方向相反时，根据表面锚定能量，我们有两种不同的情况。当平面取向壁上存在强边界条件（锚定能 >10 ^–1 erg/cm ²），且存在周边界条件（锚定能≈10 ^–3 erg/cm ^{2 ）时}) 在垂直取向壁上，液晶 (LC) 的分子沿流动方向。“柔性带的”曲率在平面取向壁上给定周边界条件和垂直取向壁上给定强边界条件时反转。