Uni-directional transportation on peristome-mimetic surfaces for completely wetting liquids

Chuxin Li, Ning Li, Xinshi Zhang, Zhichao Dong, Huawei Chen, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

78 Citations (Scopus)

Abstract

Liquid uni-directional transport on solid surface without energy input would advance a variety of applications, such as in bio-fluidic devices, self-lubrication, and high-resolution printing. Inspired by the liquid uni-directional transportation on the peristome surface of Nepenthesalata, here, we fabricated a peristome-mimicking surface through high-resolution stereo-lithography and demonstrated the detailed uni-directional transportation mechanism from a micro-scaled view visualized through X-ray microscopy. Significantly, an overflow-controlled liquid uni-directional transportation mechanism is proposed and demonstrated. Unlike the canonical predictions for completely wetting liquids spreading symmetrically on a high-energy surface, liquids with varied surface tensions and viscosities can spontaneously propagate in a single preferred direction and pin in all others. The fundamental understanding gained from this robust system enabled us to tailor advanced micro-computerized tomography scanning and stereo-lithography fabrication to mimic natural creatures and construct a wide variety of fluidic machines out of traditional materials.
Original languageEnglish
Pages (from-to)14988–14992
Number of pages5
JournalAngewandte Chemie - International Edition
Volume55
Issue number48
DOIs
Publication statusPublished - 21 Nov 2016
Externally publishedYes

Keywords

  • Bio-mimetic
  • Computerized tomography
  • Directional transportation
  • Viscous liquids
  • Wetting liquids

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