Guided self-propelled leaping of droplets on a micro-anisotropic superhydrophobic surface

Jie Liu, Haoyuan Guo, Bo Zhang, Shasha Qiao, Mingzhe Shao, Xianren Zhang, Xi-Qiao Feng, Qunyang Li, Yanlin Song, Lei Jiang, Jianjun Wang

Research output: Contribution to journalArticleResearchpeer-review

87 Citations (Scopus)

Abstract

By introducing anisotropic micropatterns on a superhydrophobic surface, we demonstrate that water microdroplets can coalesce and leap over the surface spontaneously along a prescribed direction. This controlled behavior is attributed to anisotropic liquid-solid adhesion. An analysis relating the preferential leaping probability to the geometrical parameters of the system is presented with consistent experimental results. Surfaces with this rare quality demonstrate many unique characteristics, such as self-powered, and relatively long-distance transport of microdroplets by "relay" coalescence-induced leaping. Jumping Jack Flash: Water microdroplets can coalesce and leap over the surface spontaneously along a prescribed direction upon introducing anisotropic micropatterns onto superhydrophobic surfaces. These surfaces offer efficient self-powered and relatively long-distance transport of microdroplets by "relay" coalescence-induced leaping and effective self-sustained microcarriers.

Original languageEnglish
Pages (from-to)4265-4269
Number of pages5
JournalAngewandte Chemie - International Edition
Volume55
Issue number13
DOIs
Publication statusPublished - 18 Mar 2016
Externally publishedYes

Keywords

  • Anisotropy
  • Guided propulsion
  • Microdroplets
  • Self-propelled movement
  • Superhydrophobicity

Cite this

Liu, J., Guo, H., Zhang, B., Qiao, S., Shao, M., Zhang, X., Feng, X-Q., Li, Q., Song, Y., Jiang, L., & Wang, J. (2016). Guided self-propelled leaping of droplets on a micro-anisotropic superhydrophobic surface. Angewandte Chemie - International Edition, 55(13), 4265-4269. https://doi.org/10.1002/anie.201600224