TY - JOUR
T1 - Droplet Retention on Superhydrophobic Surfaces
T2 - A Critical Review
AU - Jiang, Youhua
AU - Choi, Chang Hwan
N1 - Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2021/1/22
Y1 - 2021/1/22
N2 - Wetting phenomena and superhydrophobic surfaces are ubiquitous in nature and have recently been explored widely in scientific and engineering applications. The understanding and control of surface superhydrophobicity are not only fundamentally intriguing but also practically important to provide unique and regulated functionalities to natural species and industrial applications. Here, the fundamentals of wetting phenomena are critically reviewed that especially apply to superhydrophobicity, putting an emphasis on the clarification of contact angles, the quantification of droplet retention force, and the role of contact line. The fundamentals of how the droplet retention is determined by the surface features are discussed and advanced analytical models for the prediction of contact angles and retentive forces are introduced. Applications are further discussed whose functionalities largely depend on the droplet retention, including directional droplet transport, anti-icing, and water harvesting.
AB - Wetting phenomena and superhydrophobic surfaces are ubiquitous in nature and have recently been explored widely in scientific and engineering applications. The understanding and control of surface superhydrophobicity are not only fundamentally intriguing but also practically important to provide unique and regulated functionalities to natural species and industrial applications. Here, the fundamentals of wetting phenomena are critically reviewed that especially apply to superhydrophobicity, putting an emphasis on the clarification of contact angles, the quantification of droplet retention force, and the role of contact line. The fundamentals of how the droplet retention is determined by the surface features are discussed and advanced analytical models for the prediction of contact angles and retentive forces are introduced. Applications are further discussed whose functionalities largely depend on the droplet retention, including directional droplet transport, anti-icing, and water harvesting.
KW - contact angle
KW - droplet
KW - retention
KW - superhydrophobic
KW - wetting
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U2 - 10.1002/admi.202001205
DO - 10.1002/admi.202001205
M3 - Review article
AN - SCOPUS:85091756899
VL - 8
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 2
M1 - 2001205
ER -