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Tuning Hydrophobicity with Honeycomb Surface Structure and Hydrophilicity with CF4 Plasma Etching for Aerosol-Deposited Titania Films

Authors
Kim, Do-YeonPark, Jung-JaeLee, Jong-GunLee, Min-WookKim, Ho-YoungOh, Joon-HoSeong, Tae-YeonKim, DonghwanJames, Scott C.van Hest, Maikel F. A. M.Chandra, SanjeevYoon, Sam S.
Issue Date
12월-2012
Publisher
WILEY-BLACKWELL
Citation
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.95, no.12, pp.3955 - 3961
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume
95
Number
12
Start Page
3955
End Page
3961
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/106790
DOI
10.1111/jace.12021
ISSN
0002-7820
Abstract
A tunable surface that promotes either hydrophobic or hydrophilic behavior of TiO2 films is produced with aerosol deposition. This process is capable of mass production by high-speed coating at room temperature without any wet chemicals, and therefore the process has the potential to be economically viable, energy efficient, and environmentally friendly. Functional TiO2 films between 1 and 18 mu m thick are produced by directly depositing dry, 1-mu m TiO2 powders accelerated through a supersonic nozzle. Tunable film morphology due to a rough honeycomb surface structure yields variable water contact angles. When plasma treated with CF4, the films exhibit superhydrophilicity despite the rough honeycomb surface structure. Superhydrophilicity is due to the incorporation of fluorine in the film as shown using XPS.
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College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles

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