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US 2015/0243468 A1Published application
Applications of graphene grids in vacuum electronics
AssigneeElwha LLC
InventorsWilliam David Duncan, Roderick A. Hyde, Jordin T. Kare, Max N. Mankin, Tony S. Pan, Lowell L. Wood, JR.
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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.
Claims35
An apparatus comprising:
- a first grid configured to receive a flow of electrons in a vacuum device, wherein the first grid includes at least two substantially parallel layers of graphene, and wherein the vacuum device is configured with a set of device parameters;
- wherein the first grid is receptive to a voltage source to produce a voltage in the first grid;
- and
- wherein the first grid is configured to transmit electrons in an energy pass band that is at least partially determined by the voltage and the set of device parameters.
1 more element
An apparatus comprising:
- a cathode and a graphene grid that are configured in a vacuum electronic device, wherein the graphene grid is configured to modulate a flow of electrons from the cathode in device operation;
- wherein the cathode and the graphene grid are receptive to a voltage to produce an electric field between the cathode and the graphene grid;
- and
- wherein the graphene grid is deformable responsive to an input, and wherein the deformation responsive to the input is selected to change the electric field between the cathode and the graphene grid.
1 more element
An apparatus comprising:
- a cathode and a grid that are configured in a vacuum electronic device, wherein the grid is configured to modulate a flow of electrons from the cathode in device operation;
- wherein the grid includes a layer of graphene on a support structure.
An apparatus comprising:
- a cathode and a grid that are configured in a vacuum electronic device, wherein the grid is configured to modulate a flow of electrons from the cathode in device operation;
- wherein the grid includes nanoribbons of graphene.
An apparatus comprising:
- a cathode and a grid that are configured in a vacuum electronic device, wherein the grid is configured to modulate a flow of electrons from the cathode in device operation;
- wherein the grid includes an array of carbon nanotubes.
Dependencies are inferred from the claim text.