Abstract:
A device includes an anode, a cathode, and a grid configured to modulate a flow of electrons from the cathode to anode. The grid is made of graphene material which is substantially transparent to the flow of electrons. In one general aspect, a method for configuring a multi-electrode electronic device (e.g., a microelectronic or nanoelectronic device) includes providing an anode, providing a cathode and providing a grid that is made of graphene material to modulate a flow of electrons from the cathode to anode. The method may include disposing the anode, the cathode and the grid in a vacuum holding container to form the electronic device.
Abstract:
A field emission device is configured as a heat engine. In one embodiment, an apparatus comprises: a cathode, an anode, wherein the anode and cathode are receptive to a first power source to produce an anode electric potential higher than a cathode electric potential; a gate positioned between the anode and the cathode, the gate being receptive to a second power source to produce a gate electric potential selected to induce electron emission from the cathode for a first set of electrons having energies above a first threshold energy; a suppressor positioned between the gate and the anode; at least one region including gas located between the cathode and the anode; and at least one path traversable for a first portion of the first set of electrons, extending from the cathode to the anode.
Abstract:
Vacuum envelope of an image display device has a back base plate and a front base plate that are opposed to each other, and a side wall disposed between the back and font base plates. The inner surface of the front base plate is formed with an image display screen, while the inner surface of the back base plate is provide with a number of electron emitting elements for emitting electrons to the image display screen. A grid is disposed between the back and front base plates and connected to the back base plate. This grid has a greater heat expansion coefficient than the back base plate.
Abstract:
The present invention relates to an arrangement (1) for field emission with at least one extraction grid (1) comprising elements (6) with high electrical and thermal conductivity. The space in between elements (6) is transparent for electrons (5). The present invention further relates to a method to provide field emission electrons (5) from a source, emitted by a cathode (2) and accelerated in an electric field (4) between cathode (2) and at least one extraction grid (1), passing the at least one extraction grid (1) in a direction away from the cathode (2). A high amount of electrons (5) pass through the grid (1) and electrons absorbed by the grid (1) are transferred in high amount as current through the grid (1) with small amount of heat production within the grid (1).
Abstract:
A field emission device is configured as a heat engine. Different embodiments of the heat engine may have different configurations that may include a cathode, gate, suppressor, and anode arranged in different ways according to a particular embodiment. Different embodiments of the heat engine may also incorporate different materials in and/or proximate to the cathode, gate, suppressor, and anode.
Abstract:
L'invention concerne un alliage dont la composition chimique comprend, en poids : 35% ≤Ni ≤ 37% 0,001 % ≤ C ≤ 0,05% Mn ≤ 0,10% Si ≤ 0,15% Co ≤ 0,5% S 0,15% 0,015% ≤ 2(V+Ti)+Nb + Zr + Ta + Hf ≤ 0,2% 0,0025% ≤ N+O ≤ 0,015% éventuellement du calcium et/ou du magnésium en une teneur totale comprise entre 0,0001 et 0,005%, le reste étant constitué de fer et d'impuretés inévitables résultant de l'élaboration, ainsi qu'un procédé de fabrication d'une bande de cet alliage.
Abstract translation:本发明涉及一种合金,其化学组成按重量计包含:35%= Ni = 37%,0.001%= C = 0.05,%Mn = <0.10%,Si = 0.15%,Co = 0.5%,S <0.002 %,P <0.006%,B = 0.0005%,Al + Mo + Cu + Cr = <0.15%0.015%= 2(V + Ti)+ Nb + Zr + Ta + Hf = 0.2%,0.0025%= N + O = 0.015%,任选的钙和/或镁,总含量在0.0001至0.005%之间,其余由铁制成,由制备产生的不可避免的杂质以及制备所述合金条带的方法。
Abstract:
Some embodiments of vacuum electronics call for a grid that is fabricated in close proximity to an electrode, where, for example, the grid and electrode are separated by nanometers or microns. Methods and apparatus for fabricating a nanoscale vacuum grid and electrode structure are described herein.
Abstract:
Graphene grids are configured for applications in vacuum electronic devices. A multilayer graphene grid is configured as a filter for electrons in a specific energy range, in a field emission device or other vacuum electronic device. A graphene grid can be deformable responsive to an input to vary electric fields proximate to the grid. A mesh can be configured to support a graphene grid.