Wu Yi, Zeng Jing, Si Yinsong, Chen Min, Wu Limin
Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Advanced Coatings Research Center of Ministry of Education of China , Fudan University , Shanghai 200433 , China.
ACS Nano. 2018 Oct 23;12(10):10338-10346. doi: 10.1021/acsnano.8b05600. Epub 2018 Oct 11.
Transparent superamphiphobic surfaces that repel various liquids have many important applications, but there are critical challenges in their fabrication, such as expensive or complicated fabrication methods, contradictions between the rough surface for superamphiphobicity and smooth surface for transparency, large-area fabrication, etc. Herein, we report a simple and effective strategy for large-scale fabrication of robust, transparent, and superomniphobic polymer films by combined unidirectional rubbing and heating-assisted assembly technology. The obtained polymer films display two kinds of special structures of monolayer ordered re-entrant geometries with either hexagonally triangular protrusions or with hexagonally rectangular micropillars, depending upon the sphere diameters of silica templates, and demonstrate excellent repellence to water and low-surface-tension liquids, as well as high transparency.
能够排斥各种液体的透明超双疏表面有许多重要应用，但在其制备过程中存在关键挑战，例如制备方法昂贵或复杂、超双疏性所需的粗糙表面与透明性所需的光滑表面之间的矛盾、大面积制备等。在此，我们报告了一种通过单向摩擦和加热辅助组装技术大规模制备坚固、透明且超疏一切液体的聚合物薄膜的简单有效策略。根据二氧化硅模板的球体直径，所获得的聚合物薄膜呈现出两种具有单层有序凹入几何结构的特殊结构，一种具有六边形三角形凸起，另一种具有六边形矩形微柱，并表现出对水和低表面张力液体的优异排斥性以及高透明度。
