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首页> 外文期刊>Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties >Director textures of the Neel inversion wall in a liquid crystal polymer
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Director textures of the Neel inversion wall in a liquid crystal polymer

机译：液晶聚合物中Neel反转壁的导向纹理

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摘要

A solution of the director orientation function is presented for Neel inversion walls created in a liquid crystal by application of a magnetic field. The theoretical model is used to simulate director trajectories across walls as a function of both the elastic anisotropy and the orientation of the wall with respect to the applied field. The gradual transition of the defect structures from Neel bend walls to Neel splay walls as the angle between the wall and the magnetic field is varied is also presented. Micrographs obtained via atomic force microscopy on a thermotropic liquid crystalline polymer are used to test and evaluate the theoretical model. Visualization of director textures using the lamellar decoration technique shows the theoretical and experimental results to be in good agreement. The results were used to determine that the sample lad an elastic anisotropy of approximately 0.5, implying that k(11) = 3k(33).
机译：针对通过施加磁场在液晶中产生的尼尔反转壁，提出了指向矢定向函数的解决方案。理论模型用于模拟跨壁的导向器轨迹，该方向是弹性各向异性和壁相对于外加场的方向的函数。还提出了随着壁与磁场之间的角度变化，缺陷结构从尼尔弯曲壁到尼尔八角形壁的逐渐过渡。通过原子力显微镜在热致液晶聚合物上获得的显微照片用于测试和评估理论模型。使用层状装饰技术对导向器纹理进行可视化显示，理论和实验结果吻合良好。结果用于确定样品的弹性各向异性约为0.5，这意味着k（11）= 3k（33）。

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