Department of Applied Chemistry, Chuo University, Tokyo 112-8551, Japan.
Soft Matter. 2019 Sep 18;15(36):7159-7165. doi: 10.1039/c9sm01265f.
Photo-induced motion is demonstrated for a photo-responsive dye-doped liquid crystal (LC) droplet in a surfactant solution. The LC droplets started rolling on a substrate during UV irradiation and moved either toward or away from the UV light, depending on the functional groups of the guest dyes. The mechanism is explained by the Marangoni flow caused by the photo-isomerization-induced adsorption and desorption of the dye molecules to and from the LC/solution interfaces.
本文展示了一种光响应染料掺杂液晶（LC）液滴在表面活性剂溶液中的光致运动。在紫外光照射下，LC 液滴开始在基底上滚动，并根据客体染料的官能团朝着或远离紫外光移动。该机制可以通过光致异构化引起的染料分子在 LC/溶液界面上的吸附和解吸引起的 Marangoni 流来解释。
