Xu Ligang, Geng Zhi, He Junhui, Zhou Gang
Functional Nanomaterials Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Zhongguancundonglu 29, Haidianqu, Beijing 100190, China.
ACS Appl Mater Interfaces. 2014 Jun 25;6(12):9029-35. doi: 10.1021/am5016777. Epub 2014 Jun 5.
In this study, we developed a simple and versatile strategy to fabricate hierarchically structured lotus-leaf-like superhydrophobic thin films. The thin films are broadband antireflective, and the average transmittance of coated glass substrates reached greater than 95% in the wavelength range of 530-1340 nm, in contrast to 92.0% for bare glass substrate. The thin film surface shows a static water contact angle of 162° and a sliding angle less than 4°. Moreover, the thin film is thermally stable up to 300 °C, and shows remarkable stability against strong acid, strong alkali, water drop impact, and sand impact abrasion, while retaining its superhydrophobicity. Further, the thin film can pass the 3H pencil hardness test. The current approach may open a new avenue to a variety of practical applications, including windshields, eyeglasses, windows of high rise buildings and solar cells, etc.
在本研究中，我们开发了一种简单且通用的策略来制备具有分级结构的荷叶状超疏水薄膜。这些薄膜具有宽带抗反射性能，在530 - 1340 nm波长范围内，涂覆玻璃基板的平均透过率达到95%以上，相比之下，裸玻璃基板的透过率为92.0%。薄膜表面的静态水接触角为162°，滑动角小于4°。此外，该薄膜在高达300°C的温度下具有热稳定性，并且在强酸、强碱、水滴冲击和沙粒冲击磨损下表现出显著的稳定性，同时保持其超疏水性。此外，该薄膜可以通过3H铅笔硬度测试。目前的方法可能为包括挡风玻璃、眼镜、高层建筑窗户和太阳能电池等各种实际应用开辟一条新途径。
