A ZnO nanowire array film with stable highly water-repellent properties

作者：Chantal Badre, Thierry Pauporté, Mireille Turmine, Daniel Lincot · 发表于：Nanotechnology · 年份：2007 · DOI：10.1088/0957-4484/18/36/365705 · 被引用次数：112 · 研究领域：Surface Modification and Superhydrophobicity、ZnO doping and properties、Advanced Sensor and Energy Harvesting Materials

Highly water-repellent surfaces have been prepared from arrayed nanowires of zinc oxide (ZnO) by a treatment with stearic acid. The layers are electrochemically deposited on a nanocrystalline seed layer from an oxygenated aqueous zinc chloride solution. An advancing contact angle (CA) as high as 176° is obtained with a very small hysteresis ∼1°. These results, supplemented by infrared spectroscopy, show that the stearic acid forms a very well-packed self-assembled monolayer. The CA measurements show a very good stability of the treated surface even when exposed to harsh conditions or long-term ambient illumination.