A thin film of zinc oxide is deposited by sputter deposition in a partial pressure of oxygen on a suitable at a low temperature, such as less than 300 degrees Centigrade, to provide an amorphous film. This should take place in a sputtering environment which will produce an oxygen deficient film layer. After this, the film is crystallized by heat treatment in an oxygen free environment in a given temperature range. The thin film produced by this process will have very low electrical resistance, i...

Provided are new two-photon absorbing chromophores of the formula: ##STR00001## wherein R is an alkyl group having 1 to 20 carbon atoms and Q is OH, OMe, propargyloxy-(O--CH.sub.2--C.ident.CH), methylpropargyloxy-(O--CH.sub.2--C.ident.C--CH.sub.3), allyloxy-(O--CH.sub.2--C.dbd.CH.sub.2),1-methyl-allyloxy(O--CH.sub.2--CH.- dbd.CHCH.sub.3) and 3-methyl-allyloxy (O--CH(CH.sub.3)--CH.dbd.CH.sub.2).

A system for detecting and discriminating between water and ice formation on a number of objects, such as aircraft or roadways is described. The system includes an optical element or sensor adapted to receive at least first and second wavelengths of light from a multi-wavelength light source and for outputting attenuated versions of the first and second wavelengths of light. A detector senses and converts the attenuated versions of the first and second wavelengths of light to electrical signals ...

Invention discloses an apparatus that provides linear optical modulation of light carrier signals by an electrical modulation signal. Linearized modulation is achieved through the selection of a spacing profile between two optical transmission waveguides. The spacing profile relates to a transfer function, the parameters of which are chosen to yield linear modulation within a particular dynamic range. A preferred embodiment discloses the invention being fabricated within a monolithic structure.

A process for biological production of ortho-aminophenols from nitroaromatic compounds using recombinant E. Coli strains. The process uses an enzyme system that makes use of a nitroreductase enzyme that initially reduces the nitroarene to the hydroxylaminoarene and a mutase enzyme that converts the hydroxylaminoarene to an ortho-aminophenol.

A rechargeable battery energized unmanned aerial vehicle having surveillance capability and an ability to clandestinely collect propulsion and other energy needs from a conveniently located and possibly enemy owned energy transmission line. Energy collection is by way of a parked vehicle engagement with the transmission line in a current flow dependent, magnetic field determined, rather than shunt, voltage dependent, conductor coupling. Surveillance during both a parked or docked condition and d...

The Low-energy Imaging Particle Spectrometer (LIPS) is configured as a "pinhole camera" with particle-specific scintillator focal planes. The scintillators are designed specifically to respond only to either protons or electrons within a specific energy range. The scintillators are coupled directly to a multi-anode photomultiplier tube (PMT). Owing to their particle-specific response, the scintillators themselves provide the particle discrimination. The pulse amplitude defines the particle energ...

Metal-matrix composites with combinations of physical and mechanical properties desirable for specific applications can be obtained by varying and controlling selected parameters in the material formation processes, particularly by increasing the microstructural homogeneity of the composite, while maintaining a constant mixture ratio or volume fraction. In one embodiment of the invention, a CuSiC composite having increased thermal conductivity is obtained by closely controlling the size of the S...

Optimal head related transfer function spatial configurations designed to maximize speech intelligibility in multi-talker speech displays by spatially separating competing speech channels combined with a method of normalizing the relative levels of the different talkers in a multi-talker speech display that improves overall performance even in conventional multi-talker spatial configurations.

A method for producing center-tapped and non-center-tapped full wave bridge rectifiers suitable for low-voltage high-current operation by simultaneously winding a plurality of identical secondary coil sections around a primary coil using on a prearranged secondary foil conductor and insulation ensemble and equivalent circuit connections.