41 results about "Concentric electrode" patented technology

A system for stimulating a nerve or nerves in a patient includes an electrode patch having an array of equally spaced concentric electrodes each having a central cathode and a concentrically surrounding anode. The electrode array patch is used to determine the location of the nerve or nerves to be stimulated by electrical pulses. Once the location of the nerve is determined, a concentric electrode patch having a central cathode and a concentrically surrounding anode is positioned at the optimal location on the patient's skin to effect neurostimulation. The concentric electrode patch may be removably affixed to the patient's skin by adhesive or magnets.

Uniform spatial distribution of plasma over the face of a semiconductor wafer is achieved using a multi-zone electrode forming part of an electrostatic chuck used to hold the wafer in a processing chamber. The electrode includes a plurality of concentric electrode portions to which differing RF bias voltages may be applied to produce an electric field having a desired spatial distribution. Sensors are used to monitor either the spatial distribution of the plasma or the process effects of the plasma, and the sensed information is fed back to a controller that adjusts the bias voltage on the electrode portions in a manner to maintain the spatial uniformity of the plasma.

A multi-mode resistivity tool measures at multiple depths into the near-borehole formation. By use of a four mode tool, measuring to four depths at the formation, a more accurate invasion zone resistivity measurement may be made than previously known. The tool itself is shown as including six concentric electrodes, although not every electrode is necessary for every mode.

A charging apparatus for a mobile device is provided. The apparatus includes a terminal casing and a charging mount. A pattern electrode part has concentric electrode patterns. A first magnet is provided underneath the pattern electrode part, and a second magnet having multiple magnet elements is disposed around the pattern electrode part. The charging mount has a pin terminal part which comes into contact with the pattern electrode part. A third magnet being magnetically coupled with the first magnet is provided underneath the pin terminal part. A fourth magnet being magnetically coupled with the second magnet is provided around the pin terminal part.

A surgical lead for neurostimulation includes a central cathode circumscribed by an outer anode to define an annular space within which an electromagnetic field is generated between the two electrodes, and associated methods.

A first electrode of a liquid crystal cell (21) is composed of a plurality of concentric electrodes (31 to 34) of a concentrically circular shape, the plurality of concentric electrodes are divided into a first group of concentric electrodes (44) near the center and a second group of concentric electrodes (45) near the periphery, and a concentric electrode between the two groups is an independent single electrode (36). A first correction unit that corrects spherical aberration of a high density DVD is composed of the two groups and a second correction unit that corrects aberration of a conventional DVD is composed of the first group of concentric electrodes (44). In the case of correcting the aberration of the conventional DVD, the independent concentric electrode (36) is supplied with a voltage between the voltages respectively supplied to adjacent concentric electrodes (35), (37). In the case of correcting the aberration of the high density DVD, the independent concentric electrode (36) is supplied with a voltage equal to the voltage supplied to the concentric electrode immediately lateral thereto (37).

An ion cyclotron resonance cell having a large ion trapping volume is described. The cell includes elongated spaced concentric electrodes having a common axis in which the trapping volume is the space between the electrodes. The cell may also include trapping electrodes disposed at the ends of the elongated concentric electrodes.

A liquid crystal lens includes a first light-pervious plate, a second light-pervious plate, a first electrode layer arranged on the first light-pervious plate, a second electrode layer arranged on the second light-pervious plate, and a liquid crystal layer sandwiched between the first light-pervious plate and the second light-pervious plate, where the first electrode layer comprises a plurality of concentric electrodes, and a gap between two adjacent outer concentric electrodes is different from a gap between two adjacent inner concentric electrodes.

An electro-catalytic membrane system for preparing fuel gas from water operates at normal levels of pressure and temperature. The system includes a high frequency power source, a power supply system, a programmable control unit, an electro-catalytic membrane module, and a module for processing the fuel gas. The electro-catalytic membrane module includes metallic electrodes in a concentric arrangement. The space between the concentric electrodes includes granular carbon and metallic particles. A fixed membrane is arranged at a lower end of the space while a mobile membrane is arranged at an upper end of the space. The electro-catalytic membrane module is further provided with sensors for measuring process parameters, conduits, and valves for supplying and removing liquids. A system for cooling the metallic electrodes is also provided.

A multilayer chip capacitor includes electrodes comprised of numerous, closely spaced conductive layers interposed within a dielectric laminate. Adjacent conductive layers are essentially non-overlapping, so that fringe capacitance between opposing electrodes provides substantially all of the capacitance. The conductive layers may be shaped to form a non-planer boundary between electrodes. An additional high frequency integrated capacitor is formed from external electrode plates. The non-planar electrode boundary principle is also applied to discoidal capacitors in the form of a non-concentric electrode boundary.

The invention discloses a fabric surface specific resistance and volume specific resistance testing device which is characterized in that a fabric clamping device uses a three-electrode system to serve as the testing electrode of fabric surface specific resistance and volume specific resistance, and the three electrodes include two concentric electrodes contacting with the upper surface of fabric and an electrode contacting with the lower surface of the fabric; during volume specific resistance and surface specific resistance testing, the three electrodes are respectively connected with the anodes and the cathodes of a ground resistance meter and a high resistance meter to perform measuring; a resistance testing part comprises the high resistance meter which is used for being connected with the electrodes to perform measuring, and a volume specific resistance/surface specific resistance switching switch is used for selecting whether the two electrodes for testing the volume specific resistance are connected to the high resistance meter or the two electrodes for testing the surface specific resistance are connected to the high resistance meter. The fabric surface specific resistance and volume specific resistance testing device has the advantages that the device is suitable for testing the volume specific resistance and surface specific resistance of fabric of various specifications, fabric thickness can be tested at the same time, and testing results are accurate.

The invention discloses a concentric electrode static electric field simulation device and a usage method thereof. The device comprises a base, a longitudinal movement mechanism, a lateral movement mechanism, a probe mechanism and a concentric electrode plate. The longitudinal movement mechanism comprises two longitudinal guide rails which are fixed on both sides of the base in parallel, a longitudinal slide block is slidably mounted on each longitudinal guide rail, and a longitudinal scale is fixed on each longitudinal guide rail. The lateral movement mechanism comprises a transverse guide rail, the both ends of the transverse guide rail are respectively fixed on one longitudinal slide block respectively, the lateral guide rail is slidably provided with a lateral slide block, and a lateral scale is fixed on the lateral guide rail. The probe mechanism is fixed on the lateral slide block; the concentric electrode plate is fixed at the center position of the base; and the probe mechanism can realize the free movement in the longitudinal direction and the lateral direction and the data measurement. The usage stability and reliability of the instrument is improved.

An electrophysiology catheter with a distal electrode assembly having covered spine carrying a plurality of microelectrodes. The position of the microelectrodes on each spine is staggered relative to microelectrodes on adjacent spines so as to minimize the risk of electrodes on adjacent spines touching each other during use of the catheter. The staggered electrode configuration provides the distal electrode assembly with a greater effective contact surface because the effective concentric electrode arrays is increased or at least doubled.

The system presented is an electrolytic cell and system for electrolysizing and/or heating a fluid electrolyte containing hydrogen in one of its several isotopic and compound forms having a conductive solution electrolyte. The electrolytic cell includes an electrically conductive electrode prepared of selected metals and/or their alloys. The cell is designed to release heat and/or reaction products during or after operation. The several electrodes are placed in electrical contact with the fluid electrolyte so that current passes between the several electrodes and made to flow through the electrolyte. The currents and voltages used between the various electrodes are chosen to be high enough to form ionization of some selected parts of the fluid electrolyte and move hydrogen in one of its various forms to the surface of one or more electrodes. Several geometric configurations such as microspheres, multicells, concentric electrodes and other forms can be used. An electric power source in the system is connected across the electrodes whereby electrical current flows between the electrodes within the fluid electrolyte and supplying a large current density at one or more electrodes.

Biocolloids, e.g. Cryptosporidium parvum oocysts, are removed from water by filtration using a packed bed of a granular filter medium, preferably MgO, establishing an electric field across the packed bed, perpendicular to the flow of the water through the packed bed. The packed bed is provided in an annular space between two concentric electrodes.

The present disclosure illustrates a silicone concentric electrode and applies to electrical stimulation. The electrode includes at least a silicone electrode sheet and two wires. The silicone electrode sheet has a non-conductive rubber that separates the positive electrode and the negative electrode, and the negative electrode and the positive electrode will be connected to each wire respectively.

The invention relates to an accelerator for charged particles, comprising: - a capacitor stack which includes a first electrode that can be brought to a first potential, a second electrode that is concentric to the first electrode and can be brought to a second potential differing from the first potential, and at least one intermediate electrode that is concentrically arranged between the first electrode and the second electrode and can be brought to an intermediate potential lying between the first potential and the second potential; - a switching device to which the electrodes of the capacitor stack are connected and which is designed such that the concentric electrodes of the capacitor stack can be brought to increasing potential stages during operation of the switching device; - a first and a second acceleration channel formed by first and second openings in the electrodes of the capacitor stack such that charged particles can be accelerated along the first and second acceleration channel by means of the electrodes; and - a device which can influence the accelerated particle beam within the capacitor stack such that photons emitted by the particle beam are produced.