Wang Ying, Ye Xin, Li Bolin, He Junhui, Zheng Wanguo
Functional Nanomaterials Laboratory, Center for Micro/Nanomaterials and Technology 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.
University of Chinese Academy of Sciences , Beijing 100049 , China.
Langmuir. 2019 Sep 3;35(35):11351-11357. doi: 10.1021/acs.langmuir.9b02304. Epub 2019 Aug 22.
Here, we report a straightforward approach to fabricate antifogging antireflective dual-function nanostructured coatings, where antireflective nanograsses were etched into antifogging polymer coatings by self-masking reactive ion etching (RIE). The transmittance of coatings increases with the etching time, and the maximum transmittance reaches up to 98.9% in 180 s. The effective refractive index of grass-like nanostructure was calculated to be 1.15 and its optical property was simulated via the finite difference time domain (FDTD) model. The antifogging property of polymer coatings remains unchanged after RIE, which results from the hygroscopicity of polymer matrix. This strategy surpasses traditional design concepts of antifogging polymer coatings by combining excellent antireflective and antifogging properties on the same outermost layer, which demonstrates that it is probable to achieve multifunction on a single layer of a single composition.
在此，我们报道了一种制备防雾减反射双功能纳米结构涂层的直接方法，其中通过自掩膜反应离子刻蚀（RIE）将减反射纳米草蚀刻到防雾聚合物涂层中。涂层的透过率随蚀刻时间增加，在180秒时最大透过率达到98.9%。计算得出草状纳米结构的有效折射率为1.15，并通过时域有限差分（FDTD）模型模拟了其光学性质。反应离子刻蚀后聚合物涂层的防雾性能保持不变，这是由聚合物基体的吸湿性导致的。该策略通过在同一最外层结合优异的减反射和防雾性能，超越了传统防雾聚合物涂层的设计理念，这表明在单一组成的单层上实现多功能是可能的。
