Abstract:
Boron nitride nanotube paste compositions, electron emission sources including the same, electron emission devices including the same and backlight units and electron emission display devices including the same are provided. A boron nitride nanotube paste composition includes about 100 parts by weight boron nitride nanotubes, from about 500 to about 2000 parts by weight glass frit, from about 1000 to about 2000 parts by weight filler, from about 2000 to about 4000 parts by weight organic solvent, and from about 4000 to about 6000 parts by weight polymer binder. Electron emission devices including the boron nitride nanotube electron emission sources have longer lifespan and improved uniformity among pixels.
Abstract:
This invention discloses novel field emitters which exhibit improved emission characteristics combined with improved emitter stability, in particular, new types of carbide or nitride based electron field emitters with desirable nanoscale, aligned and sharped-tip emitter structures.
Abstract:
An exemplary spin-polarized electron source includes a cathode, and a one-dimensional nanostructure made of a compound (e.g., group III-V) semiconductor with local polarized gap states. The one-dimensional nanostructure includes a first end portion electrically connected with the cathode and a second end portion located/directed away from the cathode. The second end portion of the one-dimensional nanostructure functions as a polarized electron emission tip and is configured (i.e., structured and arranged) for emitting a spin-polarized electron current/beam under an effect of selectably one of a magnetic field induction and a circularly polarized light beam excitation when a predetermined negative bias voltage is applied to the cathode. Furthermore, a spin-polarized scanning tunneling microscope incorporating such a spin-polarized electron source is also provided.
Abstract:
Nano granular materials (NGM) are provided that have the extraordinary capability to conduct current in a 100 fold current density compared to high Tc superconductors by charges moving in form of Bosons produced by Bose-Einstein-Condensation (BEC) in overlapping excitonic surface orbital states at room temperature and has a light dependent conductivity. The material is disposed between electrically conductive connections and is a nano-crystalline composite material. Also provided are electrical components comprising NGM and methods and arrangements for making it by corpuscular-beam induced deposition applied to a substrate, using inorganic compounds being adsorbed on the surface of the substrate owing to their vapor pressure, and which render a crystalline conducting phase embedded in an inorganic insolating matrix enclosing the material.
Abstract:
Example embodiments presented herein are directed towards an x-ray generating device. The device comprises at least one electron emitter(s) (22, 22_1, 22_2, 22_3) which has an electrically conductive substrate (23). The electrically conductive substrate comprises a coating of nanostructures (24). The device further comprises a heating element (21) attachable to each electrically conductive substrate. The device further comprises an electron receiving component (14) configured to receiving electrons emitted from the at least one electron emitter(s). The device also comprises an evacuated enclosure (10) configured to house the at least one electron emitter(s), the heating element and the electron receiving component. The at least one electron emitter(s) is configured for Schottky emission when the heating element is in an on-state and the at least one electron emitter(s) is negatively biased.
Abstract:
Nano granular materials (NGM) are provided that have the extraordinary capability to conduct current in a 100 fold current density compared to high Tc superconductors by charges moving in form of Bosons produced by Bose-Einstein-Condensation (BEC) in overlapping excitonic surface orbital states at room temperature and has a light dependent conductivity. The material is disposed between electrically conductive connections and is a nano-crystalline composite material. Also provided are electrical components comprising NGM and methods and arrangements for making it by corpuscular-beam induced deposition applied to a substrate, using inorganic compounds being adsorbed on the surface of the substrate owing to their vapor pressure, and which render a crystalline conducting phase embedded in an inorganic insolating matrix enclosing the material.
Abstract:
The present invention relates to afield emission cathode, comprising an at least partly electrically conductive base structure, and a plurality of electrically conductive micrometer sized sections spatially distributed at the base structure, wherein at least a portion of the plurality of micrometer sized sections each are provided with a plurality of electrically conductive nanostructures. Advantages of the invention include lower power consumption as well as an increase in light output of e.g. a field emission lighting arrangement comprising the field emission cathode.
Abstract:
The object of the present invention is to enable the optical axis of an electron beam of a field emission electron gun mounting thereon an electron gun composed of a fibrous carbon material to be adjusted easily. Moreover, it is also to obtain an electron beam whose energy spread is narrower than that of the electron gun. Further, it is also to provide a high resolution electron beam applied device mounting thereon the field emission electron gun. The means for achieving the objects of the present invention is in that the fibrous carbon material is coated with a material having a band gap, in the field emission electron gun including an electron source composed of a fibrous carbon material and an electrically conductive base material for supporting the fibrous carbon material, an extractor for field-emitting electrons, and an accelerator for accelerating the electrons. Moreover, it is also to apply the field emission electron gun to various kinds of electron beam applied devices.
Abstract:
In accordance with the invention, there are electron emitters, charging devices, and methods of forming them. An electron emitter array can include a plurality of nanostructures, each of the plurality of nanostructures can include a first end and a second end, wherein the first end can be connected to a first electrode and the second end can be positioned to emit electrons, and wherein each of the plurality of nanostructures can be formed of one or more of oxidation resistant metals, doped metals, metal alloys, metal oxides, doped metal oxides, and ceramics. The electron emitter array can also include a second electrode in close proximity to the first electrode, wherein one or more of the plurality of nanostructures can emit electrons in a gas upon application of an electric field between the first electrode and the second electrode.
Abstract:
An exemplary spin-polarized electron source includes a cathode, and a one-dimensional nanostructure made of a compound (e.g., group III-V) semiconductor with local polarized gap states. The one-dimensional nanostructure includes a first end portion electrically connected with the cathode and a second end portion located/directed away from the cathode. The second end portion of the one-dimensional nanostructure functions as a polarized electron emission tip and is configured (i.e., structured and arranged) for emitting a spin-polarized electron current/beam under an effect of selectably one of a magnetic field induction and a circularly polarized light beam excitation when a predetermined negative bias voltage is applied to the cathode. Furthermore, a spin-polarized scanning tunneling microscope incorporating such a spin-polarized electron source is also provided.