电气可切换的多稳定拓状态,通过内马特液晶细胞的表面诱导挫折使其成为可能
Jelto Neirynck1, Yu-Tung Hsiao1, Migle Stebryte1
1Liquid Crystals and Photonics Group, Department of Electronics and Information Systems, Ghent University, Technologiepark-Zwijnaarde 126, Ghent, 9052, Belgium.
Advanced materials (Deerfield Beach, Fla.)
|January 11, 2025
概括
液晶 (LC) 细胞中的表面图案创造了多稳定的光学状态. 这些状态由电场和拓保护控制,使智能窗口应用具有可调节的透明度和低能耗.
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
- 光电学是指光电子产品.
背景情况:
- 液晶 (LC) 细胞中的表面图案指导分子自我组装.
- 相互冲突的定模式可能会导致表面丧和缺陷.
- 弹性变形可以实现无缺陷的配置,但电刺激可能会引入偏差.
研究的目的:
- 研究具有交叉定模式的LC细胞中的多稳定状态的产生和控制.
- 探索电刺激和几何参数在形成这些状态中的作用.
- 为了证明智能窗口应用程序具有可调节透明度的潜力.
主要方法:
- 使用了具有频率依赖性介电性质的双频液晶.
- 应用电场处理和各种几何参数.
- 采用Q-tensor模拟用于配置检索和光学模拟用于对显微镜图像进行验证.
主要成果:
- 通过弹性变形,实现无缺陷的散装配置.
- 经过证明,在没有电压的情况下持续存在的电刺激诱导的离线线.
- 通过使用频率依赖的介电性质,在多稳定状态 (有或没有偏离) 之间获得可重复的切换.
- 已确认的拓保护和能量障碍,用于观察到的元稳定性.
结论:
- 在LC细胞中的多稳定拓状态可以通过电刺激和几何参数精确控制.
- 这些状态表现出不同的光学特性,使得能够在透明和不透明状态之间切换.
- 这些发现为开发低能耗智能窗户和先进光学设备提供了机会.
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