Thermodynamic analysis and prediction on the wetting properties of pore array superhydrophobic laser-texturing surfaces

时间:2022-01-04作者:浏览量:73


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