在Poiseuille-like流中,液晶toron存在于类似Poiseuille的流中
Guilherme N C Amaral1,2, Hanqing Zhao3, Mahmoud Sedahmed4
1Centro de Física Teórica e Computacional, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal.
Scientific reports
|January 21, 2025
概括
模拟显示液晶 (LC) 托龙在低流量时稳定,但在高流量时分解. 部分滑动边界条件导致可逆的龙延长,与实验保持一致.
科学领域:
- 软物质物理学 软物质物理学
- 液晶科学 液晶科学
- 微流体学 微流体学
背景情况:
- 在微流体应用中,与液晶 (LC) toron一样,拓保护的扭曲或单子在微流体应用中至关重要.
- 了解它们在材料流下的行为是必不可少的,但在计算上具有挑战性.
- 以前的模拟通常集中在2D系统上,可能缺少3D效果.
研究的目的:
- 为了研究在不同物质流速下LC托龙的三维 (3D) 结构.
- 探索边界条件的影响,特别是部分滑动,对托伦的稳定性和形状的影响.
- 为了比较3D龙的行为与2D龙对流动的反应.
主要方法:
- 使用了先进的三维 (3D) 计算模拟.
- 在不同流速下分析了的结构变化.
- 研究了部分滑动边界条件对龙动态的影响.
主要成果:
- 在低流速下,LC电极能达到稳定的配置.
- 托龙在较高的流速下解体,这与实验观测相一致.
- 部分滑动边界条件诱导托伦的可逆延长,与实验发现相匹配.
结论:
- LC托龙的3D性质显著影响它们对物质流的反应,与2D系统不同.
- 这些发现强调了3D模拟的必要性,以准确地建模流动中的LC单子.
- 这项研究为探索流动软物质系统中的其他拓单元提供了基础.
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