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US 10,056,219 B2Granted
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
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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.
Claims34
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 each being one atom thick planar sheets, 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 and the graphene grid includes one or more layers that are one atom thick sheets;
- 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 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 one or more layers of graphene that are one atom thick sheets 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 in one or more layers that are one atom thick sheets.
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 and graphene in one or more layers that are one atom thick sheets.
Dependencies are inferred from the claim text.