Inorganic Surface Coating with Fast Wetting-Dewetting Transitions for Liquid Manipulations
Inorganic Surface Coating with Fast Wetting-Dewetting Transitions for Liquid Manipulations
复制标题
用于液体操作的具有快速润湿-反润湿转变的无机表面涂层
DOI：
10.1021/acsami.8b02537
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发表时间：
2018
影响因子：
9.5
通讯作者：
Zhao Jianlin
中科院分区：
文献类型：
--
作者：
Yang Yajie;Zhang Liaoliao;Wang Jue;Wang Xinwei;Duan Libing;Wang Nan;Xiao Fajun;Xie Yanbo;Zhao Jianlin
液体操纵是微流体和小型化传感器的基本问题。通过光学方法的快速润湿状态转换已被证明是有效的有机表面涂层的液体操纵，但很少通过使用无机涂层实现。在这里，我们报告了一个快速的光学诱导润湿状态过渡表面实现无机涂层，使几十秒的过渡润湿-去湿周期，缩短了一个小时，通常报告。在这里，我们展示了一个重力驱动的微流控反应器，并在第二步曝光后将其切换到混合器，至少在80 s的紫外线曝光。通过使用无机表面涂层，快速润湿-去润湿过渡表面使得用于水收集、微型化学反应或传感系统的快速可切换或可擦除智能表面成为可能。
Liquid manipulation is a fundamental issue for microfluidics and miniaturized sensors. Fast wetting-state transitions by optical methods have proven being efficient for liquid manipulations by organic surface coatings, however rarely been achieved by using inorganic coatings. Here, we report a fast optical-induced wetting-state transition surface achieved by inorganic coating, enabling tens of second transitions for a wetting–dewetting cycle, shortened from an hour, as typically reported. Here, we demonstrate a gravity-driven microfluidic reactor and switch it to a mixer after a second-step exposure in a minimum of within 80 s of UV exposure. The fast wetting–dewetting transition surfaces enable the fast switchable or erasable smart surfaces for water collection, miniature chemical reaction, or sensing systems by using inorganic surface coatings.