Developments in bioinspired superwetting materials have triggered technological revolutions in many disciplines. One representative area is liquid directional transport dominated by interface properties, which has experienced rapid progress recently. To improve the controllability, scientists try to use the external field, such as light, electricity, thermal, and so on, to assist or achieve controllable smart, responsive liquid directional transport. However, there are still some intractable problems and challenges behind prosperity. Here, we summarize the relevant basic theory of surface wettability and the processes of the development of bioinspired superwetting materials. We discuss the different essential mechanisms of liquid directional transport. Furthermore, smart external field-controlled fluid directional transport is the primary focus of this feature article. We briefly put forward our views on some outstanding problems, existing challenges, and trends in this field.

中文翻译：

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受生物启发的智能液体定向运输控制。

受生物启发的超湿材料的发展引发了许多学科的技术革命。一个代表性的领域是界面性质主导的液体定向传输，最近已经历了快速的发展。为了提高可控性，科学家们尝试利用光，电，热等外部领域来协助或实现可控的智能，响应式液体定向运输。但是，繁荣背后仍然存在一些棘手的问题和挑战。在这里，我们总结了表面润湿性的相关基础理论以及生物启发性超湿材料的开发过程。我们讨论了液体定向传输的不同基本机制。此外，智能外部现场控制的流体定向传输是这篇专题文章的重点。对于这一领域中一些突出的问题，存在的挑战和趋势，我们简要提出了自己的看法。