材料科学
纳米技术
霜冻(温度)
激光器
表面能
热液循环
复合材料
化学工程
光学
物理
工程类
作者
Dongdong Liu,Ri Liu,Lixin Cao,Lu Wang,Sadaf Saeed,Zuobin Wang,Peter John Bryanston-Cross
出处
期刊:Langmuir
[American Chemical Society]
日期:2023-12-18
标识
DOI:10.1021/acs.langmuir.3c03144
摘要
Frost formation and accumulation can have catastrophic effects on a wide range of industrial activities. Hence, a dual-scale surface with a stable Cassie-Baxter state is developed to mitigate the frosting problem by utilizing direct laser interference lithography assisted with hydrothermal treatment. The high Laplace pressure tolerance under the evaporation stimulus and prolonged Cassie-Baxter state maintenance under the condensation stimulus demonstrate the stable Cassie-Baxter state. The dual-scale surface exhibits a lengthy frost-delaying time of up to 5277 s at -7 °C due to the stable Cassie-Baxter state. The self-removal of frost is achieved by promoting the mobility of frost melts driven by the released interfacial energy. In addition, the dense flocculent frost layer is observed on the single-scale micro surface, whereas the sparse pearl-shaped frost layer with many voids is obtained on the dual-scale surface. This work will aid in understanding the frosting process on various-scale superhydrophobic surfaces and in the design of antifrosting surfaces.
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