Title: Light-Controlled Quick Switch of Adhesion on a Micro-Arrayed Liquid Crystal Polymer Superhydrophobic Film

Author: Chao Li, Futao Cheng, Jiu-an Lv, Yong Zhao, Mingjie Liu, Lei Jiang, Yanlei Yu*

Journal: Soft Matter, 2012, 8, 3730-3733

Abstract:

A micro-arrayed liquid crystal polymer film, cross-linked in the nematic phase, was successfully prepared from an optimized azobenzene precursor and polydimethylsiloxane-soft-template-based secondary replication. Regulated by alternating irradiation of UV-visible light (365 nm/530 nm), the micro-arrayed film showed an ideal quick (<1 min) and reversible switch of superhydrophobic adhesion.

论文链接：https://pubs.rsc.org/en/content/articlehtml/2012/sm/c2sm07471k

PDF下载：Light-Controlled Quick Switch of Adhesion on a Micro-Arrayed Liquid Crystal Polymer Superhydrophobic Film.pdf

本研究从偶氮苯前驱体和PDMS模具出发，采用二次成型法制备了偶氮苯微阵列液晶膜。在紫外-可见光的交替照射下，平行排列于微柱表面的偶氮苯基元会发生协同光异构，因此成功实现了快速、可逆的光控超疏水黏附状态变化。光控界面对微流体环境影响小，能够实现无接触局部控制，并提升刺激响应速度与稳定性。该工作对具有可控超疏水黏附状态的智能界面的设计和实际应用具有重要意义。