Light-induced charged slippery surfaces

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

7 Scopus Citations
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Author(s)

  • Zuankai Wang
  • Xuemin Du

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article numbereabp9369
Journal / PublicationScience Advances
Volume8
Issue number27
Online published8 Jul 2022
Publication statusPublished - 8 Jul 2022

Abstract

Slippery lubricant-infused porous (SLIPS) and superhydrophobic surfaces have emerged as promising interfacial materials for various applications such as self-cleaning, anti-icing, and antifouling. Paradoxically, the coverage/ screening of lubricant layer on underlying rough matrix endows functionalities impossible on superhydrophobic surfaces; however, the inherent flexibility in programming droplet manipulation through tailoring structure or surface charge gradient in underlying matrix is compromised. Here, we develop a class of slippery material that harnesses the dual advantages of both solid and lubricant. This is achieved by rationally constructing a photothermal-responsive composite matrix with real-time light-induced surface charge regeneration capability, enabling photocontrol of droplets in various working scenarios. We demonstrate that this light-induced charged slippery surface (LICS) exerts photocontrol of droplets with fast speed, long distance, antigravity motion, and directionally collective motion. We further extend the LICS to biomedical domains, ranging from specific morphological hydrogel bead formation in an open environment to biological diagnosis and analysis in closed-channel microfluidics.

Citation Format(s)

Light-induced charged slippery surfaces. / Wang, Fang; Liu, Meijin; Liu, Cong; Zhao, Qilong; Wang, Ting; Wang, Zuankai; Du, Xuemin.

In: Science Advances, Vol. 8, No. 27, eabp9369, 08.07.2022.

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