9 results about "Concentric electrode" patented technology

The invention discloses a reduced graphene oxide biochip based on a piezoelectric substrate and a preparation method and application thereof, the reduced graphene oxide biochip based on the piezoelectric substrate comprises a sound transduction unit and at least one detection unit connected to the sound transduction unit, and a microfluid channel layer is arranged between the sound transduction unit and the detection unit. A reduced graphene oxide layer is directly formed on the surface of a piezoelectric layer of a detection unit, a biological recognition element is fixed on the reduced graphene oxide layer, and the biological recognition element is used for being combined with target biological molecules to generate a reaction product with electron donating and receiving capacity. On the basis, the acoustic transduction electrode design of a concentric interdigital electrode structure is adopted, and the acoustic surface wave intensity which is more concentrated compared with other electrode structures is generated by utilizing the focusing effect of the concentric electrode structure; the flow velocity of the fluid to be measured in the microfluid channel is faster, and the directivity is stronger and more concentrated.

This invention discloses an optical lens device comprising: a liquid crystal material housed between two half-cell components; wherein one or more of the two half-cell components include a first concentric electrode pattern and a second concentric electrode pattern, the first concentric electrode pattern and the second concentric electrode pattern being electrically operable in parallel to at least switch the liquid crystal material to a first state and switch out of the first state; wherein the first state includes a cooperative refractive index distribution in adjacent first and second regions centered on an optical axis; wherein at least one of the two half-cell components includes at least one annular solid wall structure located in a reset region between a first edge of the first region and a second edge of the second region; and wherein the solid wall structure is positioned closer to the first region than to the second region; and when the liquid crystal material is in the first state, the refractive index of unpolarized light propagating in a direction perpendicular to the half-cell components is more closely matched with the liquid crystal material at the first edge of the first region than the liquid crystal material at the second edge of the second region.

The invention discloses a novel multi-physics-field synergistic electroflotation water treatment device, and relates to the technical field of water treatment. Comprising a device main body, and a cross cyclone water distributor, an annular concentric electrode assembly, a fish scale type separator and a negative pressure rotary demister which are arranged in the device main body and are sequentially distributed from bottom to top, the pollutant separation efficiency is remarkably improved through a sedimentation-adsorption-air flotation three-stage cooperative treatment process, and sedimentation is that flocculation is enhanced by using a cross-shaped cyclone water distributor, so that gt is rapidly removed; 200 [mu] m coarse particles; intercepting: electrolyzing by adopting an annular concentric electrode assembly to generate tiny bubbles, and intercepting gt by combining a laminar flow matrix of a bionic fish scale type separator; impurities of 50 [mu] m; the air floatation refers to directional suction and removal through a negative-pressure rotary demister; micro-nano pollutants with the size of 50 microns are accurately purified in a graded manner; by means of the highly-integrated four-dimensional structure design of rotational flow water distribution, annular electrodes, fish scale separation and negative pressure defoaming, the equipment is compact in installation and especially suitable for space-limited scenes.

The present disclosure provides a concentric electrode. The concentric electrode includes a cylindrical base and a tip disposed on the cylindrical base. The cylindrical base extends in the axial direction of the rotating shaft, and the cylindrical base comprises conductive metal. The tip includes a concentric surface extending axially from the cylindrical base and defined by an outer shoulder having an outer diameter and an inner shoulder having an inner diameter. The tip is configured to provide an electrical current to the steel workpiece and remove a coating from at least a portion of the steel workpiece.

A concentric electrode is provided. The concentric electrode includes a cylindrical base and a tip disposed on the cylindrical base. The cylindrical base extends axially along an axis of rotation, and the cylindrical base includes a conductive metal. The tip includes a concentric surface extending axially from the cylindrical base and defined by an outer shoulder having an outside diameter and an inner shoulder having an inside diameter. The tip is configured to provide an electrical current to a steel workpiece and purge a coating from at least a portion of the steel workpiece.

A concentric electrode is provided. The concentric electrode comprises a cylindrical base and a tip located on the cylindrical base. The cylindrical base extends axially along an axis of rotation and contains a conductive metal. The tip comprises a concentric surface extending axially from the cylindrical base and defined by an outer shoulder with an outer diameter and an inner shoulder with an inner diameter. The tip is configured to deliver an electric current to a steel workpiece and to remove a coating from at least one section of the steel workpiece.

The utility model discloses a parallel bipolar stimulating electrode, which comprises an electrode terminal, a circuit board and two electrode wires which are electrically connected in sequence, one end of the electrode terminal, the circuit board and one ends of the two electrode wires are wrapped by a shell, the two electrode wires are arranged side by side and are adjacent to each other, and the two electrode wires are arranged in parallel and are adjacent to each other. The surface of the electrode wire is covered with an insulating layer, and the insulating layer is removed at the end of the electrode wire to form an exposed point. Compared with two concentric electrode wires, although the total sectional area of the two side-by-side electrode wires is not changed, the two side-by-side electrode wires slightly extrude and cut surrounding tissues during implantation, and the electrode wire is particularly suitable for small animal models, and is low in manufacturing difficulty and high in strength and toughness.

Method for two-stage spot welding, comprising: Providing a stack of workpieces (10) containing a first steel workpiece (14, 14A) and a second steel workpiece (14, 14B), wherein the first steel workpiece (14, 14A) and the second steel workpiece (14, 14B) contain a coating (16); Touching the first steel workpiece (14, 14A) with a first concentric electrode (12, 12A) and touching the second steel workpiece (14, 14B) with a second concentric electrode (12, 12B), wherein the first concentric electrode (12, 12A) and the second concentric electrode (12, 12B) each have an outer diameter (OD), an inner diameter (ID) and a tip (24); Removing the coating (16) from the first steel workpiece (14, 14A) to form a first locally exposed section (28, 28A), and from the second steel workpiece (14, 14B) to form a second locally exposed section (28, 28B), by passing an electric current between the first concentric electrode (12, 12A) and the second concentric electrode (12, 12B) and through the workpiece stack (10), wherein the locally exposed sections (28, 28A, 28B) are formed in the shape of a concentric ring with outer diameter (OD) and inner diameter (ID) and are defined by an outer shoulder region (30) and an inner shoulder region (32); and Spot welding of the first steel workpiece (14, 14A) and the second steel workpiece (14, 14B) using a first welding electrode (36A) and a second welding electrode (36B), respectively, wherein the first welding electrode (36A) and the second welding electrode (36B) have a weld end face diameter that is larger than the inner diameter (ID) and smaller than the outer diameter (OD).

The invention belongs to the technical field of water treatment, and relates to a modularized pulse concentric electric flocculation device and method for water softening. The device comprises a pulse power supply, a copper ring, a resin electrode stand, a reaction tank, a cylindrical iron anode and a stainless steel mesh cathode. A water outlet is formed in the side surface of the reaction tank; an electrode handle is arranged above the copper ring and is connected with an electrode clamp; the resin electrode stand is provided with holes and a strip-shaped array which are respectively used for installing anodes and cathodes. The method comprises the following steps: providing pulse current for the iron anode by adopting a pulse power supply, constructing a radial electric field, carrying out electric flocculation reaction between the concentric electrodes, and turning off the power supply after treating for a certain time. According to the structure, the migration path of hardness ions is effectively shortened, floc generation is promoted through the high-pH environment of the cathode region, the anode area utilization rate is remarkably increased, the flocculation process is accelerated, and efficient hardness removal is achieved. The device is reasonable in structure, simple and convenient to operate and suitable for various water softening scenes, and has a good application prospect.