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superomniphobic surfaces for easy-removals of environmentalrelated liquids after icing and melting

Nano Research 2023年第2期16卷 3267-3277页

作者： Lizhong Wang Ze Tian Xiao Luo Changhao Chen Guochen Jiang Xinyu Hu Rui Peng Hongjun Zhang Minlin Zhong Laser Materials Processing Research Center Key Laboratory for Advanced Materials Processing Technology(Ministry of Education)Joint Research Center for Advanced Materials&Anti-icing of Tsinghua University(SMSE)-AVIC ARISchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Superhydrophobic surfaces often lose the easy-removal ability of liquids during icing&melting cycles due to the impalement phenomena of air *** for the most common mixed liquids in normal life,their difficult-removals after icing and melting have brought colossal troubles in the fields of aviation,energy,biomedicine,*** we adopt the ultrafast laser to fabricate the optimal micro-nanostructured surfaces,realizing excellent superomniphobicity for seven environmental-related *** is demonstrated that different droplets on the surfaces recover well to the original Cassie-Baxter state after melting,and can be removed easily at low tilted *** ice adhesion strengths of the seven liquids as low as 5 kPa and the micro-nanostructure durability ensure the long-term easy-removal after *** with the ice adhesion strength of untreated surfaces(264.4±17.6 kPa),those of our designed surfaces have decreased by over 50 *** and melting processes are investigated to reveal the easy-removal mechanisms that specifically distributed solutes and bubbles after icing impact downwards significantly to accelerate the recovery of the Cassie–Baxter state during melting.A series of environmental-related durability experiments including continuous icing&melting cycles,long-term salt spray,and high-pressure water jet impact further demonstrate the surfaces promising for real applications.

关键词： superomniphobic surfaces easy-removal environmental-related liquids icing melting

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