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Mechanisms of Rotational Dynamics of Chiral Liquid Crystal Droplets in an Electric Field

机译:电场手性液晶液滴的旋转动态机制

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摘要

The dynamics of the orientational structure of chiral nematic (CN) droplets in an isotropic medium in dc and ac electric fields is investigated by the polarized light microscopy technique. It is shown theoretically that the dynamics of rotational processes in these kinds of systems is determined by electroconvective processes developing due to the flexoelectric polarization associated with the initial configuration of the director field in droplets. It is established experimentally that the linear and quadratic regions of dependence of the rotational velocity of droplets on the electric field strength are explained by the above-mentioned mechanisms. Numerical simulation on the basis of the approach developed gives good agreement with experimental data.
机译:通过偏振光显微镜技术研究了直流和AC电场各向同性培养基中的手性向列(CN)液滴的定向结构的动态。 理论上,从理论上示出了这些类型系统中的旋转过程的动态由由于与液滴中的导向器领域的初始配置相关联的柔性偏振而产生的电耦合过程确定。 通过上述机构解释它是通过实验建立的,线性和二次区域对电场强度的旋转速度的旋转速度的旋转速度。 基于该方法的数值模拟开发出与实验数据提供良好的一致性。

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    Russian Acad Sci Inst Mol &

    Crystals Phys Ufa Sci Ctr Pr Oktyabrya 151 Ufa 450075 Russia;

    Russian Acad Sci Inst Mol &

    Crystals Phys Ufa Sci Ctr Pr Oktyabrya 151 Ufa 450075 Russia;

    Russian Acad Sci Inst Mol &

    Crystals Phys Ufa Sci Ctr Pr Oktyabrya 151 Ufa 450075 Russia;

    Russian Acad Sci Inst Mol &

    Crystals Phys Ufa Sci Ctr Pr Oktyabrya 151 Ufa 450075 Russia;

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  • 正文语种 eng
  • 中图分类 理论物理学;
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