Abstract: An x-ray generating device includes at least a nano-structure based field emission electron source having a self-aligned gate aperture incorporated on a substrate. The device further includes at least an anode target. Associated fabrication method is also described.

Abstract: A method of fabricating an electron source having a self-aligned gate aperture is disclosed. A substrate is deposited on a first conductive layer. Over the first conductive layer an emitter layer is deposited. The emitter layer includes one or a plurality of spaced-apart nano-structures and a solid surface with nano-structures protruding above the surface. An insulator is conformally deposited over the emitter layer surface and forms a post from each protruding nano-structure. A second conductive layer is deposited over the insulator and the second conductive layer and the insulator are removed from the nano-structures such that apertures are formed in the second conductive layer and at least the ends of the nano-structures are exposed at the centers of said apertures.

Abstract: A method of fabricating an electron source having a self-aligned gate aperture is disclosed. A substrate is deposited on a first conductive layer. Over the first conductive layer an emitter layer is deposited. The emitter layer includes one or a plurality of spaced-apart nano-structures and a solid surface with nano-structures protruding above the surface. An insulator is conformally deposited over the emitter layer surface and forms a post from each protruding nano-structure. A second conductive layer is deposited over the insulator and the second conductive layer and the insulator are removed from the nano-structures such that apertures are formed in the second conductive layer and at least the ends of the nano-structures are exposed at the centers of said apertures.

Abstract: An electron source include a first cathode electrode disposed over a substrate and terminated to provide electrons; an emitter layer disposed over the cathode electrode and formed from one or plurality vertically aligned and mono-dispersed nano-structures that are truncated to the same length, embedded in a solid matrix and protruding above the surface for emitting electrons; an insulator disposed over the emitter layer and having one or plurality of apertures, each is self-aligned with and exposes one nano-structure in the emitter layer; and a second gate electrode disposed over the insulator, having one or plurality of apertures self-aligned with the apertures in the insulator and terminated to extract electrons from the exposed nano-structures through the apertures. The gate aperture is substantially less than one micrometer and the gated nano-structures can have a density on the order of 108/cm2.

Abstract: A method of fabricating an electron source having a self-aligned gate aperture is disclosed. A substrate is deposited on a first conductive layer. Over the first conductive layer an emitter layer is deposited. The emitter layer includes one or a plurality of spaced-apart nano-structures and a solid surface with nano-structures protruding above the surface. An insulator is conformally deposited over the emitter layer surface and forms a post from each protruding nano-structure. A second conductive layer is deposited over the insulator and the second conductive layer and the insulator are removed from the nano-structures such that apertures are formed in the second conductive layer and at least the ends of the nano-structures are exposed at the centers of said apertures.

Abstract: A film (carbon and/or diamond) for a field emitter device, which may be utilized within a computer display, is produced by a process utilizing etching of a substrate and then depositing the film. The etching step creates nucleation sites on the substrate for the film deposition process. With this process patterning of the emitting film is avoided. A field emitter device can be manufactured with such a film.

Abstract: A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.

Abstract: A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.

Abstract: A carbon deposition chamber is provided with several advantages. The gas mixture used within the deposition process is expressed from tubing through three zones, which are each individually determined with needle valves. The substrate is permitted to rotate back-and-forth to permit more even deposition of carbon films onto the substrate. The heating filaments are permitted to expand and contract without breakage by permitting the electrode attached to one end of the filaments to move freely as the filaments change in length. The substrate and the heating filaments are cooled to a temperature to prevent carbonization by permitting a cooling fluid to be passed through tubing connected to these elements in a heat sink like manner.

Abstract: A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material. An emission site on the carbon film will emit electrons as a function of time, and as a function of distance across an emission site area.

Abstract: A film (carbon and/or diamond) for a field emitter device, which may be utilized within a computer display, is produced by a process utilizing treatment of a substrate and then depositing the film. The treatment step creates nucleation and growth sites on the substrate for the film deposition process and promotes election emission of the deposited film. With this process, a patterned emission can be achieved without post-deposition processing of the film. A field emitter device can be manufactured with such a film.

Abstract: A carbon deposition chamber is provided with several advantages. The substrate and the heating filaments are cooled to a temperature to prevent carbonization by permitting a cooling fluid to be passed through tubing connected to these elements in a heat sink like manner. The substrate is permitted to rotate back-and-forth to permit more even deposition of carbon films onto the substrate. The heating filaments are permitted to expand and contract without breakage by permitting the electrode attached to one end of the filaments to move freely as the filaments change in length. The gas mixture used within the deposition process is expressed from tubing through three zones, which are each individually determined with needle valves.

Abstract: A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.

Abstract: A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.

Abstract: A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.

Abstract: A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.

Abstract: A carbon deposition chamber is provided with several advantages. The heating filaments are permitted to expand and contract without breakage by permitting the electrode attached to one end of the filaments to move freely as the filaments change in length. The substrate is permitted to rotate back-and-forth to permit more even deposition of carbon films onto the substrate. The gas mixture used within the deposition process is expressed from tubing through three zones, which are each individually determined with needle valves. The substrate and the heating filaments are cooled to a temperature to prevent carbonization by permitting a cooling fluid to be passed through tubing connected to these elements in a heat sink like manner.

Abstract: A film (carbon and/or diamond) for a field emitter device, which may be utilized within a computer display, is produced by a process utilizing treatment of a substrate and then depositing the film. The treatment step creates nucleation and growth sites on the substrate for the film deposition process and promotes election emission of the deposited film. With this process, a patterned emission can be achieved without post-deposition processing of the film. A field emitter device can be manufactured with such a film.

Abstract: A film (carbon and/or diamond) for a field emitter device, which may be utilized within a computer display, is produced by a process utilizing treatment of a substrate and then depositing the film. The treatment step creates nucleation and growth sites on the substrate for the film deposition process and promotes election emission of the deposited film. With this process, a patterned emission can be achieved without post-deposition processing of the film. A field emitter device can be manufactured with such a film.

Abstract: On a field emission cathode, emission from the edges of metal conducting feedlines is inhibited, or even eliminated, by depositing a dielectric film over the edges before deposition of the field emitter material. Surface treatment of the metal conducting feedlines or substrate may be performed to enhance the field emission properties of the field emitter at preferential locations.