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首页> 外文会议>Conference on Liquid Crystals; 20031013-20031017; Zakopane; PL >Nematic point defect annihilation in a cylindrical capillary
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Nematic point defect annihilation in a cylindrical capillary

机译：圆柱形毛细管中的向列点缺陷an灭

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摘要

We perform a numerical study of the annihilation of nematic radial and hyperbolic point defect. Both the pre-collision and post-collision stages are taken into account. Initially a pair of defects is induced at the axis of the cylindrical capillary. A semi-microscopic interaction potential and the Brownian molecular dynamics are used. In the early stage the cores of defects are negligibly mutually influenced. Their relative velocity is inversely proportional to the separation d between defects. As d becomes comparable to the nematic correlation length, the cores significantly deform. During the collision the defects merge and become indistinguishable. In the post-collision regime the order parameter at the collision site gradually recovers the equilibrium configuration.
机译：我们对向列径向和双曲线点缺陷的an没进行了数值研究。碰撞前和碰撞后阶段都被考虑在内。最初，在圆柱形毛细管的轴上会引起一对缺陷。使用半微观相互作用势和布朗分子动力学。在早期阶段，缺陷的核心相互影响可以忽略不计。它们的相对速度与缺陷之间的间距d成反比。当d变得可与向列相关长度相比较时，核显着变形。在碰撞过程中，缺陷合并并且变得难以区分。在碰撞后状态中，碰撞部位的有序参数逐渐恢复平衡构型。

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