摘要:
A carbon nanotube micro-tip structure includes an insulating substrate and a patterned carbon nanotube film structure. The insulating substrate includes a surface. The surface includes an edge. The patterned carbon nanotube film structure is partially arranged on the surface of the insulating substrate. The patterned carbon nanotube film structure includes two strip-shaped arms joined at one end to form a tip portion protruded from the edge of the surface of the insulating substrate and suspended. Each of the two strip-shaped arms includes a plurality of carbon nanotubes parallel to the surface of the insulating substrate.
摘要:
An electron emission device includes a number of first electrodes and a number of second electrodes intersected with each other to define a number of intersections. An electron emission unit is sandwiched between the first electrode and the second electrode at each of the number of intersections, wherein the electron emission unit includes a semiconductor layer and an insulating layer stacked together, the semiconductor layer defines a number of holes, the carbon nanotube layer covers the number of holes, and a portion of the carbon nanotube layer is suspended on the number of holes.
摘要:
The present invention provides a method of forming a self-assembly fullerene array on the surface of a substrate, comprising the following steps: (1) providing a substrate; (2) pre-annealing the substrate at a temperature ranging from 200° C. to 1200° C. in a vacuum system; and (3) providing powdered fullerene nanoparticles and depositing them on the surface of the substrate by means of physical vapor deposition technology in the vacuum system, so as to form a self-assembly fullerene array on the surface of the substrate. The present invention also provides a fullerene embedded substrate prepared therefrom, which has excellent field emission properties and can be used as a field emitter for any field emission displays.Finally, the present invention provides a fullerene embedded substrate prepared therefrom, which can be used to substitute for semiconductor carbides as optoelectronic devices and high-temperature, high-power, or high-frequency electric devices.
摘要:
A method for making an emitter is disclosed. A number of carbon nanotubes in parallel with each other are provided. The carbon nanotubes have a number of first ends and a number of second ends opposite to the number of first ends. The first ends are attached on a first electrode and the second ends are attached on a second electrode. The first electrode and the second electrode are spaced from each other. A voltage is supplied between the first electrode and the second electrode to break the carbon nanotubes.
摘要:
Improved field emission cathodes comprise a fiber of highly aligned and densely packed single-wall carbon nanotubes, double-wall carbon nanotubes, multi-wall carbon nanotubes, grapheme nanoribbons, carbon nanofibers, and/or carbon planar nanostructures. The fiber cathodes provide superior current carrying capacity without degradation or adverse effects under high field strength testing. The fibers also can be configured as multi-fiber field emission cathodes, and the use of low work function coatings and different tip configurations further improves their performance.
摘要:
Disclosed is a field emitter electrode including a bonding unit formed on a substrate, and a plurality of carbon nanotubes fixed to the substrate by the bonding unit, in which the bonding unit includes a carbide-based first inorganic filler and a second inorganic filler formed of a metal.
摘要:
A field electron emitter including a metal electrode; and a plurality of carbon nanotubes, wherein a portion of the plurality of carbon nanotubes protrude from a surface of the metal electrode and a portion of the plurality of carbon nanotubes are in the metal electrode. Also disclosed is a field electron emission device including the field electron emitter and a method of manufacturing the field electron emitter.
摘要:
A method for making a field emission cathode device is provided. A filler, a substrate, and a metal plate are provided. The metal plate has a first surface and a second surface opposite to the first surface, and defines at least one through hole extending through from the first surface to the second surface. At least one electron emitter is inserted into the at least one through hole. The first surface of the metal plate is attached to the substrate. At least a part of the at least one electron emitter is located between the first surface and the substrate. The at least one through hole is filled with the filler to firmly fix the at least one electron emitter.
摘要:
A method for making a field emission cathode device is provided. A filler, a substrate, and a metal plate are provided. The metal plate has a first surface and a second surface opposite to the first surface, and defines at least one through hole extending through from the first surface to the second surface. At least one electron emitter is inserted into the at least one through hole. The first surface of the metal plate is attached to the substrate. At least a part of the at least one electron emitter is located between the first surface and the substrate. The at least one through hole is filled with the filler to firmly fix the at least one electron emitter.
摘要:
The present invention provides devices comprising an assembly of carbon nanotubes, and related methods. In some cases, the carbon nanotubes may have enhanced alignment. Devices of the invention may comprise features and/or components which may enhance the emission of electrons and may lower the operating voltage of the devices. Using methods described herein, carbon nanotube assemblies may be manufactured rapidly, at low cost, and over a large surface area. Such devices may be useful in display applications such as field emission devices, or other applications requiring high image quality, low power consumption, and stability over a wide temperature range.