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US 9,659,734 B2Granted
Electronic device multi-layer graphene grid
AssigneeElwha LLC
InventorsWilliam David Duncan, Roderick A. Hyde, Jordin T. Kare, Max N. Mankin, Tony S. Pan, Lowell L. Wood, Jr.
Life of this patent
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Abstract
A vacuum electronic device includes a multi-layer graphene grid that includes at least two layers of graphene, where the transmission of electrons through the multi-layer graphene grid can be tuned by varying the parameters of the vacuum electronic device such as the number of graphene layers, relative positions of the electrodes, voltage biases applied to the electrodes, and other device parameters.
Claims29
An apparatus comprising:
- a cathode, an anode, and a first grid that are configured to form a vacuum electronic device, wherein the first grid is disposed between the cathode and the anode, wherein the first grid is configured to modulate a flow of electrons between the cathode and anode in device operation;
- wherein the first grid comprises a sheet that includes a layer of graphene, wherein the layer of graphene comprises a lattice structure having a plurality of openings, wherein the flow of electrons between the cathode and anode is transmitted through the plurality of openings;
- and
- wherein the vacuum electronic device is configured with a set of device parameters that are selected according to a relative electron transmission through the first grid.
1 more element
An apparatus comprising:
- a cathode, an anode, and a first grid that are configured to form a vacuum electronic device, wherein the first grid is disposed between the cathode and the anode, wherein the first grid is configured to modulate a flow of electrons between the cathode and anode in device operation;
- wherein the first grid comprises a sheet that includes a layer of graphene, wherein the layer of graphene comprises a lattice structure having a plurality of openings, wherein the flow of electrons between the cathode and anode is transmitted through the plurality of openings;
- and wherein the first grid is curved such that the transmission rate of the flow of electrons is a function of an angle of approach of the flow of electrons.
An electronic device comprising:
- a cathode and a grid, wherein the grid is configured to modulate a flow of electrons emitted by the cathode in device operation;
- wherein the grid comprises a sheet that includes a layer of graphene, wherein the layer of graphene comprises a lattice structure having a plurality of openings, wherein the flow of electrons emitted by the cathode is transmitted through the plurality of openings, and wherein the grid is characterized by an energy-dependent transmission spectrum;
- wherein the cathode and the grid are configured with a set of device parameters that are selected according to a relative electron transmission through the first grid;
- and wherein the cathode and the grid form at least a portion of at least one of a vacuum tube, a power amplifier, a klystron, a gyrotron, a traveling-wave tube, a field-emission triode, and a field emission display.
1 more element
Dependencies are inferred from the claim text.