Journal
LANGMUIR
Volume 38, Issue 30, Pages 9073-9084Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.2c01533
Keywords
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Funding
- National Natural Science Foundation of China [51975502]
- Research Grants Council of Hong Kong [C1006-20WF, 11213320, 11201020]
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This article introduces the design and application of liquid-repellent surfaces. It focuses on the air-infused repellent surface and the lubricated liquid-repellent surface, highlighting the challenges in designing these surfaces in both air and underwater environments. The article presents the advantages and drawbacks of liquid-repellent surfaces and lists applications in various fields such as the ocean, medical care, and energy harvesting.
Surfaces are vibrant sites for various activities with environments, especially as the transfer station for mass and energy exchange. In nature, natural creatures exhibit special wetting and interfacial properties such as water repellency and water affinity to adapt to various environmental challenges by taking advantage of air or liquid infusion media. Inspired by natural surfaces, various engineered liquid-repellent surfaces have been developed with a wide range of applications in both open and closed underwater environments. In particular, underwater conditions are characterized by high viscosity, high pressure, and complex compositions, which pose more challenges for the design of robust and functional repellent surfaces. In this Perspective, we take a parallel approach to introduce two classical liquid-repellent surfaces: an air-infused repellent surface and a lubricated liquid-repellent surface. Then we highlight fundamental challenges and design configurations of robust liquid-repellent surfaces both in air and underwater. We summarize the advantages and drawbacks of two kinds of repellent surfaces and list several applications of liquid-repellent surfaces for use in the ocean, medical care, and energy harvesting. Finally, we provide an outlook of research directions for robust liquid repellent surfaces.
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