Aerodynamic Super-Repellent Surfaces
Repelling liquid drops from engineering surfaces has attracted great attention in a variety of applications. To achieve efficient liquid shedding, delicate surface textures are often introduced to sustain air pockets at the liquid–solid interface. However, those surfaces are prone to suffer from mec...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Association for the Advancement of Science (AAAS)
2023-01-01
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| Series: | Research |
| Online Access: | https://spj.science.org/doi/10.34133/research.0111 |
| _version_ | 1797280567410032640 |
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| author | Fanfei Yu Jinlong Yang Ran Tao Yao Tan Jinpei Wang Dehui Wang Longquan Chen Zuankai Wang Xu Deng |
| author_facet | Fanfei Yu Jinlong Yang Ran Tao Yao Tan Jinpei Wang Dehui Wang Longquan Chen Zuankai Wang Xu Deng |
| author_sort | Fanfei Yu |
| collection | DOAJ |
| description | Repelling liquid drops from engineering surfaces has attracted great attention in a variety of applications. To achieve efficient liquid shedding, delicate surface textures are often introduced to sustain air pockets at the liquid–solid interface. However, those surfaces are prone to suffer from mechanical failure, which may bring reliability issues and thus limits their applications. Here, inspired by the aerodynamic Leidenfrost effect, we present that impacting drops are directionally repelled from smooth surfaces supplied with an exogenous air layer. Our theoretical analysis reveals that the synchronized nonwetting and oblique bouncing behavior is attributed to the aerodynamic force arising from the air layer. The versatility and practicability of our approach allow for drop repellency without the aid of any surface wettability treatment and also avoid the consideration of mechanical stability issues, which thereby provides a promising candidate for the applications that necessitate liquid shedding, e.g., resolve the problem of tiny raindrop adhesion on the automobile side window during driving. |
| first_indexed | 2024-03-07T16:42:05Z |
| format | Article |
| id | doaj.art-35a7f866d6c44f7ea669454bded8812b |
| institution | Directory Open Access Journal |
| issn | 2639-5274 |
| language | English |
| last_indexed | 2024-03-07T16:42:05Z |
| publishDate | 2023-01-01 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | Article |
| series | Research |
| spelling | doaj.art-35a7f866d6c44f7ea669454bded8812b2024-03-03T07:33:15ZengAmerican Association for the Advancement of Science (AAAS)Research2639-52742023-01-01610.34133/research.0111Aerodynamic Super-Repellent SurfacesFanfei Yu0Jinlong Yang1Ran Tao2Yao Tan3Jinpei Wang4Dehui Wang5Longquan Chen6Zuankai Wang7Xu Deng8Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China.Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China.Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region 999077, P. R. China.Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China.Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region 999077, P. R. China.Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China.School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China.Department of Mechanical Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region 999077, P. R. China.Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China.Repelling liquid drops from engineering surfaces has attracted great attention in a variety of applications. To achieve efficient liquid shedding, delicate surface textures are often introduced to sustain air pockets at the liquid–solid interface. However, those surfaces are prone to suffer from mechanical failure, which may bring reliability issues and thus limits their applications. Here, inspired by the aerodynamic Leidenfrost effect, we present that impacting drops are directionally repelled from smooth surfaces supplied with an exogenous air layer. Our theoretical analysis reveals that the synchronized nonwetting and oblique bouncing behavior is attributed to the aerodynamic force arising from the air layer. The versatility and practicability of our approach allow for drop repellency without the aid of any surface wettability treatment and also avoid the consideration of mechanical stability issues, which thereby provides a promising candidate for the applications that necessitate liquid shedding, e.g., resolve the problem of tiny raindrop adhesion on the automobile side window during driving.https://spj.science.org/doi/10.34133/research.0111 |
| spellingShingle | Fanfei Yu Jinlong Yang Ran Tao Yao Tan Jinpei Wang Dehui Wang Longquan Chen Zuankai Wang Xu Deng Aerodynamic Super-Repellent Surfaces Research |
| title | Aerodynamic Super-Repellent Surfaces |
| title_full | Aerodynamic Super-Repellent Surfaces |
| title_fullStr | Aerodynamic Super-Repellent Surfaces |
| title_full_unstemmed | Aerodynamic Super-Repellent Surfaces |
| title_short | Aerodynamic Super-Repellent Surfaces |
| title_sort | aerodynamic super repellent surfaces |
| url | https://spj.science.org/doi/10.34133/research.0111 |
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