宏观内马特定向由一个定向挫折的随机场表面所决定:平衡结构和动力学
Zihua Chen1, Satoshi Aya1,2
1South China Advanced Institute for Soft Matter Science and Technology (AISMST), School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China.
Langmuir : the ACS journal of surfaces and colloids
|November 3, 2023
概括
研究人员模拟了混合固的挫败表面上的液晶. 他们绘制了批量定向状态,揭示了表面模式和电场如何控制液晶行为,并使场辅助定过渡成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 软物质物理学 软物质物理学
背景情况:
- 液晶在受到混合定条件的挫折表面的影响时表现出复杂的定向模式.
- 这些模式可以导致大量方向的连续或不连续变化,称为定或方向过渡.
- 了解表面定模式与系统的能量格局之间的关系对于开发新型光电子设备至关重要.
研究的目的:
- 调查边界基板上随机混合的平面和同源固域如何影响液晶的大量定向状态.
- 确定域大小,表面积和固强度在决定平衡状态中的作用.
- 分析外部电场对方向状态图的影响,并识别场辅助定过渡.
主要方法:
- 使用数值模拟来建模两种随机混合定域的边界基板.
- 该模拟包括平面和同源固偏好.
- 在各种表面和电场条件下生成了批量定向状态图.
主要成果:
- 获得了一般的批量定向状态图,说明了域大小,表面积和固强度的影响.
- 这项研究揭示了这些表面参数在确定液晶散体方向方面的关键作用.
- 发现了一个场辅助的定过渡,证明了外部电场如何修改方向状态.
结论:
- 表面定模式在很大程度上决定了液晶的能量格局和平衡状态.
- 固定领域的尺寸和分布,以及固定强度,是控制散装方向的关键因素.
- 外部电场提供了一种手段来操纵液晶的方向,使得场辅助过渡,并可能导致对设备应用相关的双稳态.
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