期刊
THIN SOLID FILMS
卷 517, 期 18, 页码 5425-5430出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2009.01.071
关键词
Titanium dioxide; Polyethylene glycol; Antifogging; Hydrophilicity; Atomic force microscopy
类别
资金
- Australian Research Council (ARC) Centre of Excellence for Functional Nanomaterials
The effect of TiO2 film thickness and agglomerate size on the non-UV activated superhydrophilic wetting and antifogging characteristics of TiO2 films was investigated. Evidence from Atomic Force Microscopy analysis showed that surface roughness is the key parameter requiring control so as to retain the superhydrophilic wetting and antifogging behaviour of the synthesised films. Surface roughness can be tuned by simple manipulation of the multilayer assembly of TiO2 nanoparticles through varying the film thickness and agglomerate size. A film thickness of similar to 140 nm yielded the optimum roughness (root mean square =23 nm) to give the best superhydrophilic wetting behaviour. Thicker films reduced the film roughness and were detrimental to their superhydrophilic wetting properties. Smaller agglomerate size was also found to be important in retaining film roughness. (C) 2009 Elsevier B.V. All rights reserved.
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