首页|Aerodynamic Super-Repellent Surfaces

Aerodynamic Super-Repellent Surfaces

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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.

Fanfei Yu、Jinlong Yang、Ran Tao、Yao Tan、Jinpei Wang、Dehui Wang、Longquan Chen、Zuankai Wang、Xu Deng

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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

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

Shenzhen Institute for Advanced Study,University of Electronic Science and Technology of China,Shenzhen 518110,P.R.China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChengdu Science and Technology BureauShenzhen Science and Technology ProgramCentral Government Funds of Guiding Local Scientific and Technological Development for Sichuan ProvinceSichuan Outstanding Young Scholars FoundationSichuan Science and Technology Program

2220203522072014221020172021-GH02-00105-HZJCYJ202103241422100272021ZYD00462021JDJQ00132021JDRC0016

2024

10.34133/research.0111

研究(英文)

研究(英文)

CSTPCD
ISSN：
年,卷(期)：2024.2024(2)
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