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arXiv 1707.04641cond-mat.softphysics.comp-ph
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微滴相变中的手征对称性破缺动力学

Chiral symmetry-breaking dynamics in the phase transformation of nematic droplets

Fred Fu, Nasser Mohieddin Abukhdeir

摘要:

通过对垂面锚定作用下液晶液滴各向同性相变的动力学模拟,预测了手征对称性破缺动力学。当使用戊基-氰基联苯(5CB)的材料参数时,这些观察发生,但不是在这种材料的单一弹性常数近似下,经常用于模拟。扭转动态过程发生在从不稳定的径向织构到稳定的均匀织构的畴的松弛期间,并且涉及同时的缺陷环运动和体织构的扭转。

英文摘要:

Dynamic simulations of the isotropic-nematic phase transformation of liquid crystal droplets under homeotropic anchoring are found to predict chiral symmetry-breaking dynamics. These observations occur when using material parameters for pentyl-cyanobiphenyl (5CB) but not under the single elastic constant approximation of this material, frequently used in simulation. The twisting dynamic process occurs during the relaxation of the domain from an unstable radial texture to a stable uniform texture and involves simultaneous defect loop motion and twisting of the bulk nematic texture.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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