Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3291667
Keywords
bio-inspired materials; contact angle; hydrophilicity; nanoporous materials; titanium compounds; transparency; wetting
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Funding
- U.S. Department of Energy
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Since the discovery of extreme surface wetting phenomenon induced by ultraviolet photocatalysis, TiO2 has become the material of choice for environmental friendly applications such as self-cleaning coatings. Nevertheless, it remains a significant challenge to realize surfaces exhibiting persistent superhydrophilicity but without the need of external stimuli. We report a bioinspired TiO2 nanostructure that shows extreme superhydrophilicity without the need of light activation, and with stability against successive wetting-dewetting cycles. This ultimate TiO2 wetting surface exhibits high transmittance from near ultraviolet to the infrared, thus enabling practical antifogging technologies where transparency is critical.
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