Abstract:
An electron emission device and a method of manufacturing the same are provided. The electron emission device includes: i) a substrate including a metal tip; ii) carbon nano tubes that are positioned on the metal tip; and iii) a lithium layer that is positioned on the carbon nano tubes.
Abstract:
To provide a gas field ion source having a high angular current density, the gas field ion source is configured such that at least a base body of an emitter tip configuring the gas field ion source is a single crystal metal, such that the apex of the emitter tip is formed into a pyramid shape or a cone shape having a single atom at the top, and such that the extraction voltage in the case of ionizing helium gas by the single atom is set to 10 kV or more.
Abstract:
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.
Abstract:
A field emission cathode device includes a cathode substrate, a gate electrode, a first dielectric layer, a cathode electrode, and an electron emission layer. The gate electrode is located on a surface of the cathode substrate. The first dielectric layer is located on a surface of the gate electrode and defines a first opening to expose part of the gate electrode. The cathode electrode is spaced from the gate electrode through the first dielectric layer defining a second opening in alignment with the first opening. A field emission display using the field emission cathode device is also related.
Abstract:
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.
Abstract:
A field emission display is also provided. The field emission display includes a plurality of pixel units. Each of the plurality of pixel units includes a first electrode located on the insulating substrate; a plurality of first electron emitters located on and electrically connected to the first electrode; a first phosphor layer located on the first electrode; a second electrode located on the insulating substrate and spaced from the first electrode, wherein the second electrode extends at least partly around the first electrode; a plurality of second electron emitters located on and electrically connected to the second electrode; and a second phosphor layer located on the second electrode.
Abstract:
A carbon nanotube field emitter is disclosed. The carbon nanotube field emitter includes an emission portion and a supporting portion. The emission portion and the supporting portion are configured as one piece to form a roll structure. The emission portion includes a first rolled carbon nanotube layer, which includes a number of carbon nanotubes. The supporting portion includes a rolled composite layer, which includes at least one second rolled carbon nanotube layer and a rolled metal layer stacked with each other. Another carbon nanotube field emitter with a number of separated emission tips on the emission portion is also disclosed.
Abstract:
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.
Abstract:
Provided is an electron source which outputs a stable electron beam even when vibration is applied from the external to an apparatus which uses the electron source. The electron source is provided with an insulator (5); two conductive terminals (4) arranged at an interval on the insulator (5); a long filament (3) stretched between the conductive terminals (4); and a needle-like cathode (1) having an electron emitting section attached to the filament (3). The vertical cross-section shape of the filament (3) in the axis direction has a long direction and a short direction, and the maximum length in the long direction is 1.5 times or more but not more than 5 times the maximum length in the short direction.
Abstract:
A cold cathode field emission electron source capable of emission at levels comparable to thermal sources is described. Emission in excess of 6 A/cm2 at 7.5 V/μm is demonstrated in a macroscopic emitter array. The emitter is comprised of a monolithic and rigid porous semiconductor nanostructure with uniformly distributed emission sites, and is fabricated through a room temperature process which allows for control of emission properties. These electron sources can be used in a wide range of applications, including microwave electronics and x-ray imaging for medicine and security.
Abstract translation:描述了能够以与热源相当的水平发射的冷阴极场致发射电子源。 在宏观发射极阵列中证明了在7.5V / m时超过6A / cm 2的发射。 发射极由具有均匀分布的发射部位的单片和刚性多孔半导体纳米结构组成,并通过允许控制发射特性的室温工艺制造。 这些电子源可用于广泛的应用,包括微波电子学和医学和安全性的x射线成像。