Bundles of fluid fibers formed by bent-core molecules.
Bundles of fluid fibers formed by bent-core molecules.
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由弯曲核心分子形成的流体纤维束。
DOI：
10.1103/physreve.81.031708
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
A. Jákli
中科院分区：
文献类型：
--
作者：
C. Bailey;M. Murphy;A. Eremin;Wolfgang Weissflog;A. Jákli
使用偏光显微镜、扫描电子显微镜和用于力测量的定制悬臂梁、温控热台，研究了弯曲芯近晶液晶独立灯丝束的内部结构、稳定性和弹性特性。我们发现，在束中，单根细丝熔合在一起形成半可分离的细丝，其半径大约比单根纤维大两倍到三倍。我们还发现，宽束的有效表面张力比单丝小约 10%。最后，我们描述了导致束弯曲的单纤维在束内的亚稳态共存。所有这些观察结果都可以用简单的宏观模型来解释。
The internal structures, stability, and elastic properties of free-standing filament bundles of bent-core smectic liquid crystals are studied using polarizing microscopy, scanning electron microscopy, and a customized cantilever containing, temperature controlled heat stage for force measurements. We find that in bundles, the individual filaments fuse together to form semiseparable filaments with radii approximately two and three times larger than the individual fibers. We also find that the effective surface tension of wide bundles is about 10% smaller than a single filament. Finally, we describe the metastable coexistences of single fibers within the bundles that lead to bending of the bundles. All of these observations were explained with simple macroscopic models.