Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 12, Pages 9029-9035Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am5016777
Keywords
broadband antireflective; superhydrophobicity; thin films; thermally stable; mechanically robust
Funding
- National High Technology Research and Development Program (863 Program) of China [2011AA050525]
- Knowledge Innovation Program of the Chinese Academy of Sciences (CAS) [KGCX2-YW-370, KGCX2-EW-304-2]
- National Natural Science Foundation of China [21271177]
- Key Laboratory of Space Energy Conversion Technology, TIPC, CAS
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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 degrees and a sliding angle less than 4 degrees. Moreover, the thin film is thermally stable up to 300 degrees 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.
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