Heat-Driven Rigid-Body Rotation of a Mixture of Cholesteric Liquid Crystal Droplets and Colloids
Heat-Driven Rigid-Body Rotation of a Mixture of Cholesteric Liquid Crystal Droplets and Colloids
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DOI：
10.1021/acs.jpcb.0c04186
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发表时间：
2020-07-16
影响因子：
3.3
通讯作者：
Tabe, Yuka
中科院分区：
文献类型：
--
作者：
Bono, Shinji;Maruyama, Yuji;Tabe, Yuka
我们发现，分散在各向同性（Iso）相中的具有圆柱对称取向的胆甾型（Ch）液晶滴在沿对称轴的热通量下表现出单向旋转。通过将胶体颗粒粘附到 Ch 液滴表面，我们追踪了胶体的平移运动，发现胶体围绕每个 Ch 液滴的中心单向旋转。液滴的导向构型在空间或时间上都没有扭曲，而胶体不断旋转。结果表明，热流下的 Ch 液滴应作为刚体旋转。利用 Ch 液滴的这种热驱动旋转，我们设计了 Ch 液滴和胶体的各种复合材料的新几何形状，并成功地驱动了有趣的复杂动力学。
We show that cholesteric (Ch) liquid crystal droplets with cylindrically symmetric orientation dispersing in an isotropic (Iso) phase exhibited unidirectional rotation under a heat flux along the symmetry axis. By introducing colloidal particle adhesive to the Ch droplet surface, we traced the translational motion of the colloids and found that the colloids rotated unidirectionally around the center of each Ch droplet. The director configuration of the droplets was not distorted either spatially or temporally, while the colloids rotated constantly. The results suggest that the Ch droplets under the heat flux should rotate as a rigid body. Using this heat-driven rotation of the Ch droplets, we designed new geometries of various composites of Ch droplets and colloids and succeeded in driving intriguing complex dynamics.