Internal-combustion engines – Combined devices
Reexamination Certificate
2011-08-09
2011-08-09
Cuff, Michael (Department: 3783)
Internal-combustion engines
Combined devices
C123S00100A, C123S003000, C123SDIG012, C123S575000, C205S340000, C701S103000, C422S186000
Reexamination Certificate
active
07992528
ABSTRACT:
Titania is a semiconductor and photocatalyst that is also chemically inert. With its bandgap of 3.0, to activate the photocatalytic property of titania requires light of about 390 nm wavelength, which is in the ultra-violet, where sunlight is very low in intensity. A method and devices are disclosed wherein stress is induced and managed in a thin film of titania in order to shift and lower the bandgap energy into the longer wavelengths that are more abundant in sunlight. Applications of this stress-induced bandgap-shifted titania photocatalytic surface include photoelectrolysis for production of hydrogen gas from water, photovoltaics for production of electricity, and photocatalysis for detoxification and disinfection.
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Cole David J.
Cuff Michael
Nanoptek Corporation
Nguyen Hung Q
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