期刊
ADVANCED MATERIALS
卷 29, 期 23, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201606869
关键词
bioinspired materials; liquid infused; magnetocontrollable; microcilia
类别
资金
- National Natural Science Foundation of China [21273016, 21421061]
- National Basic Research Program of China [2013CB933000]
- Beijing Nova Program
- Beijing Natural Science Foundation [L160003]
- Beijing Young Talent Support Program
- Key Research Program of the Chinese Academy of Sciences [KJZD-EW-M01]
- Fundamental Research Funds for the Central Universities
- State Key Laboratory of Chemical Engineering [SKL-ChE-16B04]
Here, a smart fluid-controlled surface is designed, via the rational integration of the unique properties of three natural examples, i.e., the unidirectional wetting behaviors of butterfly's wing, liquid-infused slippery surface of the pitcher plant, and the motile microcilia of micro-organisms. Anisotropic wettability, lubricated surfaces, and magnetoresponsive microstructures are assembled into one unified system. The as-prepared surface covered by tilted microcilia achieves significant unidirectional droplet adhesion and sliding. Regulating by external magnet field, the directionality of ferromagnetic microcilia can be synergistically switched, which facilitates a continuous and omnidirectional-controllable water delivery. This work opens an avenue for applications of anisotropic wetting surfaces, such as complex-flow distribution and liquid delivery, and extend the design approach of multi-bioinspiration integration.
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