Unidirectional wetting properties on multi-bioinspired magnetocontrollable slippery microcilia

Moyuan Cao, Xu Jin, Yun Peng, Cunming Yu, Kan Li, Kesong Liu, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

125 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number1606869
Number of pages6
JournalAdvanced Materials
Volume29
Issue number23
DOIs
Publication statusPublished - 20 Jun 2017
Externally publishedYes

Keywords

  • bioinspired materials
  • liquid infused
  • magnetocontrollable
  • microcilia

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