Thermodynamic analysis and prediction on the wetting properties of pore array superhydrophobic laser-texturing surfaces
作者
Hong, XZ (Hong, Xiaozhe) 1
Hu, HX (Hu, Huixiang) 1
Gao, Y (Gao, Yan) 1, 2
JOURNAL OF APPLIED PHYSICS
卷129
期21
文献号215302
DOI10.1063/5.0050644
出版时间JUN 7 2021
文献类型Article
摘要
Superhydrophobic surfaces fabricated by laser irradiation on various materials have been reported recently to show excellent wetting properties. However, there are only limited works regarding the theoretical analysis and prediction of the wetting properties of different surface structures, especially the widely used pore array laser-texturing surfaces, whose fabrication process is simple and time-saving. Here we propose a two-dimensional thermodynamic structure model based on the actual pore array laser-texturing surfaces, and four wetting states are defined in our model. By minimizing the Gibbs free energy, equilibrium contact angle and contact angle hysteresis representing wetting properties are calculated, and the effects of defined parameters (intrinsic contact angle theta(Y), pore space b, and pore depth H) on wetting properties are analyzed in detail to find out the critical transition conditions among different wetting states. Besides, actual pore array laser-texturing surfaces are fabricated for further validation, and the wetting properties in measurement are found to be in good agreement with those in prediction, indicating that our model is credible and can be used to guide the design of the pore array superhydrophobic laser-texturing surfaces.
关键词
Keywords PlusCONTACT-ANGLE HYSTERESISWETTABILITY TRANSITIONSOLID-SURFACESFABRICATIONDESIGN
作者信息
通讯作者地址
Gao, Yan
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
通讯作者地址
Gao, Yan
(通讯作者)
South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
2 South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
电子邮件地址meygao@scut.edu.cn
类别/分类
研究方向Physics