Multistimuli-responsive microstructured superamphiphobic surfaces with large-range, reversible switchable wettability for oil

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

1 Scopus Citations
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Author(s)

  • Hujun Wang
  • Zhihui Zhang
  • Yunhong Liang
  • Zhenquan Cui
  • Jie Zhao
  • Xiujuan Li
  • Luquan Ren

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)28478−28486
Journal / PublicationACS Applied Materials and Interfaces
Volume11
Issue number31
Online published16 Jul 2019
Publication statusPublished - 7 Aug 2019

Abstract

The switchable wettability is essential for widespread applications in droplet manipulation, rewritable liquid patterning, fluid carrying, and so forth. However, it remains difficult to achieve the multistimuli-responsive, large-range, and reversible wetting switching especially for liquids with low surface tensions through surface topographical management. Here, we apply a simple and effective template-free self-assembly strategy to fabricate microstructured superamphiphobic surfaces that can reversibly switch the wetting performance for oil by transforming the surface morphology in response to multiple stimuli of magnetic fields and mechanical strains. Notably, the noticeably different wetting switching of oil triggered by different stimuli is demonstrated. The contact angles of hexadecane droplets on the as-prepared surfaces can be reversibly switched between 150 ± 1° and 38 ± 2° in response to mechanical strains. Furthermore, the underlying mechanism of wetting switching has been further elucidated using mathematical models. Interestingly, these switchable surfaces dramatically demonstrate the ability to transport oil droplets, without requiring lubricating liquid films. This work not only achieves the large-range and reversible wetting switching for oil but also opens new avenues for fabricating tunable superamphiphobic surfaces with transformable mushroom-like microstructures that can be easily extended to microstructure-dependent friction or adhesion control and used in other fields.

Research Area(s)

  • multistimuli-responsive surfaces, simple fabrication, superamphiphobicity, transformable re-entrant microstructures, wetting switching

Citation Format(s)

Multistimuli-responsive microstructured superamphiphobic surfaces with large-range, reversible switchable wettability for oil. / Wang, Hujun; Zhang, Zhihui; Wang, Zuankai; Liang, Yunhong; Cui, Zhenquan; Zhao, Jie; Li, Xiujuan; Ren, Luquan.

In: ACS Applied Materials and Interfaces, Vol. 11, No. 31, 07.08.2019, p. 28478−28486.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review