A THERMODYNAMIC ANALYSIS FOR DETERMINING CONTACT ANGLE AND CONTACT ANGLE HYSTERESIS

摘要：

Contact Angle (CA) and CA hysteresis (CAH) are significant to characterize wettable property of a surface. In this study, a free energy thermodynamiC approach is used to analysis the wettable behavior of a droplet on microtextured superhydrophobic surface, regularly microsphere and micropillar geometric distribution mode. We demonstrate that the predicted the equilibrium contact angle and CAH are consistent with the calculations of Wenzels and Cassies theories and also experimental results. Apparently, the thermodynamic approach based on the first principle and free energy minimization presented simplifies and make clear some confusion in the wettable behavior. Moreover, it provides potential guiding for designing stable superhydrophobic surfaces.

作者: Shuaixia Tan Xiaoying Lu Ning Zhao Jian Xu

作者单位: State Key Laboratory of Polymer Physics and Chemistry Institute of Chemistry,Chinese Academy of Sciences,P.R.China

会议类型: 国际会议

会议名称: International Symposium on Polymer Physics(2008年国际高分子物理学术会议PP2008)

会议地点: 厦门

会议语种:英文

页码: 167-168

在线出版日期: 2008-06-08（万方平台首次上网日期，不代表论文的发表时间）