Thermodynamic analysis on wetting properties of a droplet on a solid surface with engineered trapezoidal microarchitecture

被引：16

作者：

He, Liang ^{[1
,2
]}

Liang, Wenyan ^{[1
]}

Akbarzadeh, Abdolhamid ^{[2
,3
]}

机构：

[1] Harbin Engn Univ, Coll Aerosp & Civil Engn, Harbin 150001, Heilongjiang, Peoples R China

[2] McGill Univ, Dept Bioresource Engn, Montreal, PQ H3A 0C3, Canada

[3] McGill Univ, Dept Mech Engn, Montreal, PQ H3A 0C3, Canada

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2018年 / 119卷

基金：

黑龙江省自然科学基金; 中国国家自然科学基金; 加拿大自然科学与工程研究理事会;

关键词：

Wetting; Thermodynamic analysis; Free energy; Contact angle; Superhydrophobic surface; Engineered microarchitecture; CONTACT-ANGLE HYSTERESIS; SUPERHYDROPHOBIC SURFACES; ROUGH SURFACES; WETTABILITY; TRANSITION; RESISTANCE; PRESSURE; TENSION; DESIGN; STATES;

D O I：

10.1016/j.ijheatmasstransfer.2017.11.153

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The wetting properties of a hydrophobic solid surface containing an engineered trapezoidal microarchitecture have been investigated based on a 3-D thermodynamic model. The three-phase contact line tension is introduced in the present approach for a droplet in the composite state, and the relationship between surface topology and superhydrophobicity is established. It is demonstrated that both trapezoid base angle and base spacing have great influence on the wetting transition between composite and non composite states. Some recommendations are made for fabricating ideal superhydrophobic surfaces with optimal geometries. The validity of the present theoretical results has also been verified by comparing our theoretical predictions and experimental data available in the literature. The developed model in this paper sheds lights on the wetting properties of advanced materials with engineered microarchitecture. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：733 / 741

页数：9

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