Droplet Retention on Superhydrophobic Surfaces: A Critical Review

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

UR - http://www.scopus.com/inward/record.url?scp=85091756899&partnerID=8YFLogxK

U2 - 10.1002/admi.202001205

DO - 10.1002/admi.202001205

M3 - 文献综述

AN - SCOPUS:85091756899

SN - 2196-7350

VL - 8

JO - Advanced Materials Interfaces

JF - Advanced Materials Interfaces

IS - 2

M1 - 2001205

ER -