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首页> 外文期刊>Advanced Functional Materials >Controlled Growth of Patterned Conducting Polymer Microsuckers on Superhydrophobic Micropillar- Structured Templates
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Controlled Growth of Patterned Conducting Polymer Microsuckers on Superhydrophobic Micropillar- Structured Templates

机译：在超疏水微柱结构模板上控制导电聚合物微吸盘的受控生长

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摘要

Morphology greatly impacts the performance improvement of conducting polymers for signal detection, actuator microfabrication, and droplet manipulation applications. However, most of the previous methods cannot satisfy practical demands due to their intrinsic drawbacks. Here, a general strategy is developed for the fabrication of patterned conducting polymers with precisely controlled microstructures (e. g., polypyrrole microsuckers) by regulating the solid/ liquid/ gas triphase interface and electrochemical polymerization. By regulating the distance between the Pt plate and micropillar-structured templates, the growth directions of the microsuckers on the pillar tops change from upward (+ 26 +/- 5 degrees) to downward (- 32 +/- 7 degrees), and their positions to the pillar tops are changed from proximal to distal due to an adjustment in the solid/ liquid/ gas triphase interface. The influencing factors on the microsucker growth performance, such as the time and current of electrochemical polymerization, the shape and size of micropillars, the type of conducting polymers, are systematically investigated. Furthermore, the as- prepared microsuckers can be used for transporting water droplets because of their adjustable adhesion to water, which linearly increased from 33.5 +/- 2.3 to 61.1 +/- 1.2 mu N with an increase in the projected epitaxial length of the microsuckers from 3.38 +/- 0.39 to 8.78 +/- 0.79 mu m.
机译：形态会极大地影响导电聚合物在信号检测，执行器微细加工和微滴处理应用中的性能改善。然而，大多数先前的方法由于其固有的缺点而不能满足实际需求。此处，通过调节固/液/气三相界面和电化学聚合，开发了用于制造具有精确控制的微结构的图案化导电聚合物（例如，聚吡咯微吸盘）的一般策略。通过调节Pt板和微柱结构模板之间的距离，立柱顶部的微型吸盘的生长方向将从向上（+ 26 +/- 5度）向下（-32 +/- 7度）改变，由于固/液/气三相界面的调整，到柱顶的位置从近端到远端改变。系统地研究了影响微吸盘生长性能的因素，例如电化学聚合的时间和电流，微柱的形状和大小，导电聚合物的类型。此外，准备好的微型吸盘因其对水的可调节附着力而可用于输送水滴，随着微型吸盘的预计外延长度的增加，其从33.5 +/- 2.3线性增加至61.1 +/- 1.2μN从3.38 +/- 0.39到8.78 +/- 0.79微米

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