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Properties of twisted topological defects in 2D nematic liquid crystals
Soft Matter ( IF 2.9 ) Pub Date : 2021-07-12 , DOI: 10.1039/d1sm00825k
D J G Pearce 1 , K Kruse 2
Affiliation  

Topological defects are one of the most conspicuous features of liquid crystals. In two dimensional nematics, they have been shown to behave effectively as particles with both charge and orientation, which dictate their interactions. Here, we study “twisted” defects that have a radially dependent orientation. We find that twist can be partially relaxed through the creation and annihilation of defect pairs. By solving the equations for defect motion and calculating the forces on defects, we identify four distinct elements that govern the relative relaxational motion of interacting topological defects, namely attraction, repulsion, co-rotation and co-translation. The interaction of these effects can lead to intricate defect trajectories, which can be controlled by setting relevant timescales.

中文翻译:

二维向列液晶扭曲拓扑缺陷的性质

拓扑缺陷是液晶最显着的特征之一。在二维向列中,它们已被证明可以有效地表现为具有电荷和方向的粒子,这决定了它们的相互作用。在这里,我们研究具有径向依赖方向的“扭曲”缺陷。我们发现通过缺陷对的产生和消除可以部分地松弛扭曲。通过求解缺陷运动方程并计算缺陷上的力,我们确定了控制相互作用的拓扑缺陷的相对弛豫运动的四个不同元素,即吸引、排斥、共旋转和共平移。这些效应的相互作用可能会导致复杂的缺陷轨迹,可以通过设置相关的时间尺度来控制。
更新日期:2021-07-28
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