Airflow Triggered Water Film Self-Sculpturing on Femtosecond Laser-Induced Heterogeneously Wetted Micro/Nanostructured Surfaces

Pengyu Yang, Kai Yin, Xinghao Song, Lingxiao Wang, Qinwen Deng, Jiaqing Pei, Yuchun He, Christopher J. Arnusch

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Liquid manipulation is essential for daily life and modern industry, and it is widely used in various fields, including seawater desalination, microfluidic robots, and biomedical engineering. Nevertheless, the current research focuses on the manipulation of individual droplets. There are a few projects for water film management. Here, we proposed a facile method of wind-triggered water film self-sculpturing based on a heterogeneous wettability surface, which is achieved by the femtosecond laser direct writing technology and femtosecond laser deposition. Under the conditions of various airflow velocities and water film thicknesses, three distinct behaviors of the water film were analyzed. As a result, when the water film thickness is lower than 4.9 mm, the self-sculpture process will occur until the whole superhydrophobic surface dewetting. Four potential applications are demonstrated, including encryption, oil containers, reconfigurable patterning, and self-splitting devices. This work provides a new approach for manipulating a water film of fluid control engineering.

Original languageEnglish
Pages (from-to)3133-3141
Number of pages9
JournalNano Letters
Volume24
Issue number10
DOIs
StatePublished - 13 Mar 2024

Keywords

  • femtosecond laser
  • heterogeneous surface
  • liquid manipulation
  • nano/mirco-fabrication
  • self-sculpturing

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Mechanical Engineering
  • Bioengineering
  • General Materials Science

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