New equations of wetting

作者：Zaixing Huang · 发表于：Philosophical Magazine Letters · 年份：2020 · DOI：10.1080/09500839.2020.1740811 · 被引用次数：9 · 研究领域：Surface Modification and Superhydrophobicity、Adhesion, Friction, and Surface Interactions、Fluid Dynamics and Heat Transfer

The contact angle and static equilibrium of the triple contact line of a sessile droplet are investigated. New wetting equations are derived by minimising the total potential energy of the droplet. These differ from the previous equations of Young, Wenzel and Cassie-Baxter. The new equations show that the contact angle is influenced by the edge energy of the triple contact line and the local roughness at the triple contact line, and is independent of the interfacial area within the triple contact line. Through these new equations, answers have been obtained to existing problems that cannot be explained by the above-mentioned theories.