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Published on: May 21, 2014
在液晶连续相中,从相位分离开始的合体排序
Nature
|October 18, 2000
概括
液晶二元混合物自组织成有序的滴滴链,而不是完全分离. 这种自控自组装为具有独特光学和学特性的新型材料提供了潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 软物质物理学 软物质物理学
- 物理化学 物理化学
背景情况:
- 二元混合物的相位分离取决于温度,导致粒子形成和粗.
- 液晶 (LC) 系统在异型矩阵中分散时,对光电性能感兴趣.
- 了解LC混合物中的自我组织对于先进的材料设计至关重要.
研究的目的:
- 研究由同位素流体和液晶组成的二元混合物的自我组织行为.
- 探索超出简单相位分离的有序结构的形成.
- 确定控制这些系统中滴滴大小和空间布局的因素.
主要方法:
- 异型流体和液晶二元混合物的快速冷却.
- 观察和分析滴滴的形成,大小和空间分布.
- 研究液晶相中的方向弹性和缺陷形成的作用.
主要成果:
- 二元混合物自组织成高度有序的单分散的合体液滴链的阵列.
- 完全的相位分离被抑制,导致有序的结构而不是明显的批量相位.
- 滴滴大小和组织由液晶的方向弹性和临界缺陷大小决定.
结论:
- 同位流体和液晶的二元混合物可以自组织成有序的合液滴链.
- 这种受控的自组装为设计具有可调节性质的有序复合材料提供了一条途径.
- 这些发现表明,在具有量身定制的学和光学特征的先进材料中,有潜在的应用.
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