阴性液晶流是由时间变化的活性表面定驱动的
Seyed Reza Seyednejad1, Miha Ravnik1,2
1Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia. seyed-reza.seyednejad@fmf.uni-lj.si.
Soft matter
|January 10, 2025
概括
我们通过使用动态表面固来控制液晶细胞中的物质流. 这允许可调节的流量模式,如稳定或振荡,在光子学中具有潜在的应用.
科学领域:
- 软物质物理学 软物质物理学
- 流体动力学 流体动力学
- 材料科学 材料科学 材料科学
背景情况:
- 阴性液晶表现出复杂的流动行为.
- 表面定条件显著影响流体动力学.
- 控制这些流动对于先进的材料应用至关重要.
研究的目的:
- 为了证明在阴性液体细胞中产生多样化的材料流动模式.
- 调查时间可变的活性表面定在控制这些流量的作用.
- 探索光子学和合成活性物质的潜在应用.
主要方法:
- 在一个封闭的细胞内对被动阴性流体进行数值模拟.
- 应用时间依赖的表面定与动态可变的轻松轴.
- 分析由各种定驱动方向和阶段产生的流量模式.
主要成果:
- 成功生成多种流动模式:无净流,振荡流,稳定流和脉冲流.
- 流动模式取决于定驱动方向 (协转/反转) 和相对相位.
- 流量大小可以通过电池厚度和定驱动频率进行调节.
结论:
- 时间可变的活性表面 anchoring 提供精确控制 nematic 液晶流程.
- 这种控制机制为光子学和合成活性物质中的响应表面开辟了道路.
- 这些发现为设计新型响应性材料和设备提供了基础.
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