Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 350, Issue 1, Pages 344-347Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.06.053
Keywords
ZnO; Hierarchical nanostructure; Antireflection; Superhydrophobic; Self-cleaning
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Funding
- Ministry of Education, Science and Technology [R32-20031]
- MKE/KEIT [10032091]
- Korea Institute of Industrial Technology(KITECH) [10032091] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [R32-2008-000-20031-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A two step method, with a combination of top-down and bottom-up approaches, was developed for the fabrication of ZnO based hierarchical structures with nanorods on microcraters. A layer of well c-axis aligned, transparent, conductive ZnO thin film was deposited by pulsed DC sputtering on a Corning glass substrate. The microcraters were created with anisotropic etching on the as-deposited ZnO thin film. ZnO nanorods were then synthesized onto the etched film by means of metal organic chemical vapor deposition. The resulting hierarchical film exhibits a high water contact angle (>160 degrees) with a low contact angle hysteresis (2) and low reflection over a wide spectral range. This biomimetic material may find potential applications in many industrial fields, e.g., self-cleaning, solar cells, displays. (C) 2010 Elsevier Inc. All rights reserved.
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