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Updated: Feb 17, 2026

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
Published on: August 15, 2018
Meltwater Evolution during Defrosting on Superhydrophobic Surfaces
Fuqiang Chu1, Xiaomin Wu1, Lingli Wang1
1Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Department of Thermal Engineering, Tsinghua University , Beijing 100084, China.
Defrosting superhydrophobic surfaces involves two key stages: edge curling and shrinkage. This study reveals novel meltwater evolution dynamics, crucial for advancing antifrosting technologies.
Area of Science:
- Surface Science
- Materials Science
- Engineering Physics
Background:
- Defrosting is critical for engineering surfaces, yet poorly understood on superhydrophobic materials.
- Existing knowledge gaps hinder effective antifrosting and de-icing strategies.
Purpose of the Study:
- To investigate meltwater evolution during defrosting on superhydrophobic surfaces.
- To elucidate the mechanisms governing meltwater behavior and droplet dynamics.
Main Methods:
- Conducted defrosting experiments on prepared superhydrophobic surfaces.
- Analyzed meltwater evolution characteristics and droplet interactions.
- Developed a criterion to explain chained droplet behavior.
Main Results:
- Identified two distinct meltwater evolution stages: dewetting by edge curling and shrinkage.
- Reported edge curling as a novel phenomenon driven by unbalanced forces on layered meltwater.
- Observed nonbreaking of chained droplets, explained by surface tension and contact angle hysteresis.
Conclusions:
- The study deepens the understanding of defrosting mechanisms on superhydrophobic surfaces.
- Findings provide insights for developing improved antifrosting and de-icing applications.
- The developed criterion effectively predicts chained droplet behavior across various surfaces.
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