混合分子合液晶
Haridas Mundoor1, Sungoh Park1, Bohdan Senyuk1
1Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, CO 80309, USA.
概括
研究人员通过将无机体棒与分子液晶相结合,制造出一种新型的体液体. 这种混合材料具有独特的特性, 可以通过外部场进行控制.
科学领域:
- 软物质物理学
- 材料科学
- 体科学
背景情况:
- 在生物膜和液晶等系统中存在秩序和流动性.
- 软物质系统的对称性往往高于它们的构成部分.
- 阴性液晶的特点是棒状分子的定向顺序.
研究的目的:
- 研究由体和分子棒组成的混合流体的自组合和相位行为.
- 探索异型粒子混合物中新型有序相的形成.
- 了解流体系统中不同类型的棒状构件之间的相互作用.
主要方法:
- 在阴性液晶液体中分散微米长的无机体棒.
- 阶段形成和结构特征的实验观察.
- 开发一个粗粒度模型来解释观察到的相位图和方向分布.
主要成果:
- 从相互作用的单轴体和分子棒中形成一个正体阴性流体.
- 在实验温度-度相图中确定一个双轴和两个单轴的阴性相.
- 证明混合流体具有双轴光学晶体的特性,并且可以通过电场和磁场进行切换.
结论:
- 混合分子合体流体可以表现出独特的有序相,其对称性与其组成部分不同.
- 开发的粗粒度模型准确地预测了相位行为和方向排序.
- 这些可调节的混合材料具有在光学和响应材料中的应用潜力.
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