Enhancing droplet deposition on wired and curved superhydrophobic leaves

Meirong Song, Duan Hu, Xianfu Zheng, Lixia Wang, Zhilun Yu, Wankai An, Risong Na, Chuxin Li, Ning Li, Zhouhui Lu, Zhichao Dong, Yilin Wang, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Abstract

Droplet deposition on superhydrophobic surfaces has been a great challenge owing to the shortness of the impact contact time. Despite recent research progress regarding flat superhydrophobic surfaces, improving deposition on ubiquitous wired and curved superhydrophobic leaves remains challenging as their surface structures promote asymmetric impacts, thereby shortening the contact times and increasing the likelihood of droplet splitting. Here, we propose a strategy to solve the deposition problems based on an analysis of the impact dynamics and a rational selection of additives. Combining the prominent extension property of flexible polymers with surface tension reduction of the surfactant, the well-chosen binary additives cooperatively solve retention and coverage problems by limiting the fragment and enhancing local pinning and wetting processes at a very low usage. This work advances the understanding of droplet deposition by rationally selecting additives based on the impact dynamics, which is believed to be useful in a variety of spraying, coating, and printing applications.

Original languageEnglish
Pages (from-to)7966-7974
Number of pages9
JournalACS Nano
Volume13
Issue number7
DOIs
Publication statusPublished - 23 Jul 2019
Externally publishedYes

Keywords

  • binary additives
  • droplet deposition
  • impact dynamics
  • superhydrophobic surface
  • wires and curves

Cite this

Song, M., Hu, D., Zheng, X., Wang, L., Yu, Z., An, W., Na, R., Li, C., Li, N., Lu, Z., Dong, Z., Wang, Y., & Jiang, L. (2019). Enhancing droplet deposition on wired and curved superhydrophobic leaves. ACS Nano, 13(7), 7966-7974. https://doi.org/10.1021/acsnano.9b02457