https://scholars.lib.ntu.edu.tw/handle/123456789/598149
標題: | The Cassie-to-Wenzel wetting transition of water films on textured surfaces with different topologies | 作者: | He X Zhang B.-X Wang S.-L Wang Y.-F Yang Y.-R Wang X.-D Lee D.-J. DUU-JONG LEE |
關鍵字: | Aspect ratio;Textures;Topology;Wetting;Aspect-ratio;Basal surface;Energy minimization;Energy variations;Local energy;Partial wetting;Textured surface;Water film;Wetting transitions;Free energy | 公開日期: | 2021 | 卷: | 33 | 期: | 11 | 來源出版物: | Physics of Fluids | 摘要: | The Cassie-Wenzel (C-W) wetting transition has been extensively investigated; however, the wetting transition of water films on textured surfaces with different topologies, together with underlining mechanisms, is unsatisfactorily explored. In this study, the C-W wetting transition of water films on pillar-arrayed and striped surfaces is studied. The results show that, on pillar-arrayed surfaces, the free energy variation during the C-W wetting transition follows the classical wetting pathway. The free energy first increases with the intrusion of water into the asperities and then decreases after a water film touches the basal surface. However, on striped surfaces, there exist multiple partial wetting states with each one occupying a local energy-minimization configuration. Accordingly, the water film needs to overcome multiple energy barriers to realize the C-W wetting transition. Moreover, the effects of aspect ratio and intrinsic wettability of the two textured surfaces on the C-W wetting transition are discussed. ? 2021 Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119346186&doi=10.1063%2f5.0066106&partnerID=40&md5=95aa466fed05de5bdc8c5caa93d028a9 https://scholars.lib.ntu.edu.tw/handle/123456789/598149 |
ISSN: | 10706631 | DOI: | 10.1063/5.0066106 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。