Abstract:
The output wavelengths of an electrodeless lamp 101 are controlled by passing a fluid 102 over the surface 104 of the lamp to control its temperature. The stabilized temperature prevents thermal runaway of the lamp 101 and stabilizes the output wavelengths of the lamp 101. When the fluid 102 passing over the lamp 101 is water, the lamp 101 can be used for sanitary treatment of the water. The treatment can be enhanced by shaping the electrodeless lamp 101 to provide maximally effective water treatment.
Abstract:
Metal powder (such as tin, titanium, or tungsten powder) is heated in a flowing stream of an inert gas, such as argon, containing a small abundance of oxygen at a temperature to produce metal vapor. The metal reacts with the oxygen to form and deposit one-dimensional nanostructures of oxygen-containing metal on the metal powder (in the case of Ti and W) or on a suitable nearby substrate in the case of the lower melting tin. The metal oxides are not necessarily stoichiometric compounds. Water may be introduced into the flowing inert gas to increase or control the oxygen content. Sulfur vapor or a carbon source may be introduced to dope the nanostructures with sulfur or carbon. Reaction conditions may be modified to vary the shapes of the one-dimensional nanostructures.
Abstract:
Methods of forming a gated, self-aligned nano-structures for electron extraction are disclosed. One method of forming the nano-structure comprises irradiating a first surface of a thermally conductive laminate to melt an area across the first surface of the laminate. The laminate comprises a thermally conductive film and a patterned layer disposed on the first surface of the film. The patterned layer has a pattern formed therethrough, defining the area for melting. The film is insulated at a second surface thereof to provide two-dimensional heat transfer laterally in plane of the film. The liquid density of the film is greater than the solid density thereof. The method further comprises cooling the area inwardly from the periphery thereof to form the nano-structure having an apical nano-tip for electron emission centered in an electrically isolated aperture that serves as a gate electrode to control electron extraction in a gated field emitter device.
Abstract:
A projection light source may include a housing and an arc tube supported by the housing. The arc tube may include an arc tube body having a bulbous chamber intermediate sealed end portions, a pair of electrodes, a fill gas contained within the chamber, a fill material contained -within the chamber, and a generally ellipsoidal reflector supported by the housing. The arc tube and the reflector may be positioned so that a focus of the generally ellipsoidal reflector lies on an axis extending between the interior tips of the electrodes of the arc tube.
Abstract:
The present invention is a fluorescent light lumen regulating apparatus. More specifically, in one aspect, the present invention is a fluorescent lighting assembly (10) for mounting at least one fluorescent lamp. In this aspect, the lighting assembly comprises a lamp housing (100). In another aspect, the invention further comprises a thermal dissipater (300) to selectively dissipate heat from the fluorescent lamp to the ambient air to maintain the temperature of the cold spot of the fluorescent lamp within a predetermined temperature range.
Abstract:
A communication system comprises functionality for measuring call quality in connection with a user termination of a call. Specifically, a call quality estimator (119) comprises a termination processor (201) which determines a user call termination for a call. In response to the detection, a quality estimator (203) determines a termination call quality measure for a call quality at the user call termination. For example, an error rate in a time interval of duration between 10 seconds and 60 seconds before the detection of the call termination may be determined. A transmit controller (205) then transmits the termination call quality measure to a call quality processor (117). The call quality processor (117) may statistically process the termination call quality measures from a plurality of calls to evaluate performance of the cellular communication system. The correlation of the termination call quality measure with the user call termination provides for data which more accurately reflects the user perceived call quality.
Abstract:
Field emission properties may also be improved by coating the carbon materials with metal oxides. These metal oxides contribute to lowering the work function of the carbon material as well as improve the life of the field emission properties of the carbon materials, especially under high current density operation.
Abstract:
The invention relates to an electrode system (13) for a high-pressure discharge lamp comprising at least a leg-type shaft (4) provided with a spiral (5) which is mounted near the free end thereof on a discharge side and is used as a head and a connecting part which is connected to said spiral, wherein said connecting part is embraced by a winding (11) and the spiral and the winding are interconnected by means of a spacer (12).
Abstract:
An amorphous diamond material (5) and an intermediate member (55) coupled between the cathode (25) and an anode (30). The amorphous diamond material (5) can have at least about 90 % carbon atoms with at least about 20 % of the carbon atoms bonded in a distorted tetrahedral coordination. The amorphous diamond coating (5) has an energy input surface (10) in contact with a base member of the cathode (25) and an electron emission surface (15) opposite the energy input surface (10). The electron emission surface (15) can have an asperity height of from about 10 to about 1,000 nanometers and is capable of emitting electrons upon input of a sufficient amount of energy. The intermediate member (55) can be coupled to the electron emission surface (15) of the amorphous diamond coating (5) such that An amorphous diamond electrical generator having a cathode (25) at least partially coated with amorphous the intermediate member (55) has a thermal conductivity of less than about 100 W/mK and a resistivity of less than about 80 µohm-cm. at 20 °C. The amorphous diamond electrical generator is a thermionic emission device having improved electron emission properties.
Abstract:
Novel heterodiamondoid-containing field emission devices (FED's) are disclosed herein. In one embodiment of the present invention, the heteroatom of the heterodiamondoid comprises an electron-donating species (such as nitrogen) as part of the cathode or electron-emitting component of the field emission device.