Based on the three-dimensional thermodynamic model, the wettability of a superhydrophobic solid surface with a circular truncated cone microstructure has been investigated. The relationship between the microstructure of the circular truncated cone surface and superhydrophobic property is established by introducing the tension of the three-phase contact line in the composite state. The results show that the base angle and base spacing of the circular truncated cone have great influence on the wetting transition of composite and non-composite states. The theoretical expressions of the critical transition criteria are also given. The accuracy of the theoretical results is verified by comparing the theoretical prediction with the existing experimental data in the literature. The model established in this paper provides a theoretical basis and a reference for the optimal geometric parameters for studying the wettability of advanced superhydrophobic materials by using engineering microstructures.

中文翻译：

---

圆锥台显微结构疏水性能的热力学分析

基于三维热力学模型，研究了具有圆形截锥微结构的超疏水固体表面的润湿性。通过在复合状态下引入三相接触线的张力，建立了截锥面的微观结构与超疏水性能之间的关系。结果表明，圆锥台的底角和底距对复合态和非复合态的润湿转变有很大影响。还给出了临界转变准则的理论表达式。通过将理论预测与文献中已有的实验数据进行对比，验证了理论结果的准确性。