Foolproof method for fast and reversible switching of water-droplet adhesion by magnetic gradients

Guanglei Hou, Moyuan Cao, Cunming Yu, Shuang Zheng, Dianyu Wang, Zhongpeng Zhu, Weining Miao, Ye Tian, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)

Abstract

Reversible switching of water-droplet adhesion on solid surfaces is of great significance for smart devices, such as microfluidics. In this work, we designed a foolproof method for fast and reversible magnet-controlled switching of water-droplet adhesion surfaces by doping iron powders in soft poly(dimethylsiloxane). The water adhesion is adjusted by magnetic field-induced structure changes, avoiding complex chemical or physical surface design. The regulation process is so convenient that only tens of milliseconds are needed. The on-site responsive mechanism extends its use to unusual curved surfaces. Moreover, the excellent reversibility and stability make the film an ideal candidate for real-time applications.

Original languageEnglish
Pages (from-to)23238-23245
Number of pages8
JournalACS Applied Materials & Interfaces
Volume9
Issue number27
DOIs
Publication statusPublished - 12 Jul 2017
Externally publishedYes

Keywords

  • adhesion switching
  • fast
  • foolproof
  • magnetic gradients
  • reversible

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