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- Tingjiao Zhou
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Jinbin Yang
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Deyong Zhu
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Jieyao Zheng
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Stephan Handschuh‐Wang
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Xiaohu Zhou
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Junmin Zhang
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Yizhen Liu
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Zhou Liu
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Chuanxin He
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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- Xuechang Zhou
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
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説明
<jats:p>A bio‐inspired, leaf‐like pumping strategy by mimicking the transpiration process through leaves is developed for autonomous and continuous liquid transport enabled by durable hydrophilic sponges. Without any external power sources, flows are continuously generated ascribed to the combination of capillary wicking and evaporation of water. To validate this method, durable hydrophilic polydimethylsiloxane sponges modified with polyvinyl alcohol via a “dip‐coat‐dry” method have been fabricated, which maintains hydrophilicity more than 2 months. The as‐made sponges are further applied to achieve stable laminar flow patterns, chemical gradients, and “stop‐flow” manipulation of the flow in microfluidic devices. More importantly, the ease‐of‐operation and excellent pumping capacity have also been verified with over 24 h's pumping and quasi‐stable high flow rates up to 15 µL min<jats:sup>−1</jats:sup>. The present strategy can be easily integrated to other miniaturized systems requiring pressure‐driven flow and should have potential applications, such as cell culture, micromixing, and continuous flow reaction.</jats:p>
収録刊行物
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- Advanced Science
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Advanced Science 4 (6), 2017-04-19
Wiley
