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A number of metal oxide semiconductors based photoelectrochemical processes have been utilized in environmental and energy related application. With increased urgency in the search for alternative sources of energy, photoelectrolysis of water for generation of hydrogen using solar radiation has attracted great attention. Several metal oxide semiconductors have been considered as promising materials...
Electrostatic charge dissipation presents a major problem for applications ranging from electronics to space exploration. A novel method to control both the bulk and the surface electrical conductivity of polymeric films is presented. By dispersing small amounts of multiwall carbon nanotubes in the polymeric material, the electrical bulk resistivity decreases by seven orders of magnitude. Also, nanolayers...
Since its formation about 4.6 billion years ago, the surface of the moon has become covered with a thick layer of fine dust which has been preserved in a pristine, ultrahigh vacuum condition without any atmosphere-related changes of its physical properties and chemical compositions. The lunar surface has no atmosphere. Yet, Apollo and surveyor missions observed there is an atmospheric glow in the...
A synergistic combination of nanostructure synthesis and surface engineering was used to enhance photoelectrochemical activity of TiO2 photoanodes. Titania (TiO2) nanotubular arrays were synthesized by electrochemical anodization of Ti thin foils. A combination of atmospheric-pressure helium plasma and nitrogen exposure was used to modify the surface properties of TiO2 nanotubes. The photocurrent...
The performance of Electrodynamic Screen (EDS) for surface cleaning was characterized with respect to the following operational parameters: (1) the efficiency of screens under both continuous and intermittent operations with different rates of dust deposition, (2) electrical power requirements for the screen operation with respect frequency of excitation and duration of the applied power needed to...
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