Ncx Corporation

Basf Corporation

Jian Zhang

Tai-Teh Wu

Cheng Qian

Ronald Reichert

Dick Rogers

William G Hairston

Chi Yu Roy Chen

Robert Croft

A field emission cathode device includes a cathode element having a field emission surface and an adjacent gate electrode element defining a first gap therebetween. A gate voltage applied to the gate electrode element causes the field emission surface to emit electrons that are accelerated through the gate electrode element. The gate electrode element is disposed between the cathode element and an anode element, the anode element having an anode voltage applied thereto to attract the electrons emitted through the gate electrode element. A tuning electrode element is disposed between the gate electrode element and the anode element. The tuning electrode element has a tuning voltage applied thereto to decelerate the electrons directed through the gate electrode element and to direct the electrons therethrough toward the anode element. An associated method of forming a field emission cathode device is also provided.

Energy tuner for a gated field emission cathode device, and associated method

A field emission cathode device comprises a field emission cathode including a cylindrical substrate and a field emission material deposited on a cylindrical surface thereof. The field emission cathode defines a longitudinal axis. A solenoid extends concentrically about the cylindrical surface, and defines a gap therebetween. The solenoid defines opposed open ends perpendicular to the longitudinal axis. A current source directs a constant polarity (DC) current to the solenoid, that forms a magnetic field along the solenoid. A gate voltage source electrically connected to the solenoid or the field emission cathode interacts therewith to generate an electric field inducing the field emission cathode to emit electrons from the field emission material into the gap. The emitted electrons are responsive to the magnetic field to spiral within the gap and about the longitudinal axis, in correspondence with the current flow in the solenoid, through the first open end of the solenoid.

Field emission cathode device and method for forming a field emission cathode device

A field emission cathode device and method for forming a field emission cathode device involve a cathode element having a field emission surface, and a gate electrode element disposed in spaced-apart relation to the field emission surface of the cathode element so as to define a gap therebetween, with the gate electrode element having a plurality of parallel grill members or a mesh structure laterally-extending between opposing anchored ends. A film element laterally co-extends and is engaged with the gate electrode element, with the film element being arranged to allowed electrons emitted from the field emission surface of the cathode element to pass therethrough, and to cooperate with the gate electrode element and the cathode element to form a substantially uniform electric field within the gap and about the field emission surface.

Field emission cathode device and method of forming a field emission cathode device

A field emission cathode device and formation method involves a rotating field emission cathode including a field emission material deposited on a surface thereof, the field emission cathode rotating about an axis and being electrically connected to ground, and a planar gate electrode extending parallel to the surface of the rotating field emission cathode and defining a gap therebetween. A gate voltage source is electrically connected to the gate electrode and is arranged to interact therewith to generate an electric field, with the electric field inducing a portion of the surface of the rotating field emission cathode adjacent to the gate electrode to emit electrons from the field emission material toward and through the gate electrode.

A method and system for cleaning a field emission cathode device, the field emission cathode device including a substrate having a field emission layer engaged therewith, includes engaging the field emission cathode device with a vibration device such that the substrate is disposed above the field emission layer. The field emission cathode device is then vibrated with the vibration device in an X, Y, or Z direction at a predetermined frequency and at a predetermined amplitude for a predetermined time duration so as to clean the field emission cathode device by dislodging non-embedded particles from the field emission layer.

Method and system for cleaning a field emission cathode device

The disclosure provides for methods of repelling, directing, altering the behavior, and controlling an insect by utilizing a compound or composition described herein. The disclosure also provides for methods of promoting the health of an insect by repelling a pest that preys on insect and/or by providing an antibiotic or nutritional supplement composition to an insect. The disclosure also provides for a composition including at least one repelling, controlling, or directing compound or composition described herein together with an insecticide, herbicide, fungicide, or miticide. Compounds, compositions, seeds, and plants useful in these methods are also described.

Compounds, compositions, and methods for altering insect and organism behavior

A field emission cathode device and method for forming a field emission cathode device involve a cathode element having a field emission surface disposed in spaced-apart relation to a gate electrode element so as to define a gap between the field emission surface and the gate electrode element. The gate electrode element extends laterally between opposing anchored ends. The gate electrode element is arranged to deform away from the field emission surface in response to heat, so as to increase the gap between the field emission surface and the gate electrode element.

Growing community of inventors

Durham, NC, United States of America

Jian Zhang