126 results about "Asymmetric distribution" patented technology

A method and apparatus for electrochemical detection of analyte in a sample makes use of a binding interaction and relies on the discovery that asymmetric distribution of a redox enzyme between two electrodes that occurs when a redox enzyme-containing reagent is immobilized at the surface of one electrode can be detected as a chemical potential gradient arising from an asymmetry, in the distribution of oxidized or reduced redox substrate. This chemical potential gradient can be detected potentiometrically by observing the potential difference between the electrodes in an open circuit, or amperometrically by observing the current flow between the electrodes when the circuit is closed. In both cases, the observation of asymmetry can be done without the application of an external potential or current to the electrodes.

The current invention provides a optical MEM device and system with an angled lid for hermetically sealing an active MEMS structure. The lid is sealed through an asymmetric seal formed with sealing rings having an asymmetric distribution of solder wetting surfaces which tilts the lid, when the lid and a substrate are soldered together. The asymmetric distribution wetting surfaces can be provided by forming one or more edge features, by patterning portions of the sealing rings or both. Preferably, the lid is transparent to one or more wavelengths of light in a range of 300 to 3000 Angstroms and hermetically seals a grating light valve structure having a plurality of movable ribbon for modulating light through the lid.

An optical filter includes at least one waveguide structure. The optical filter also includes a plurality of optical resonators that are aligned in an coupled arrangement with the at least one waveguide structure so as to produce an asymmetric distribution of coupling coefficients.

A method and apparatus for providing flow into a processing chamber are provided. In one embodiment, a vacuum processing chamber is provided that includes a chamber body having an interior volume, a substrate support disposed in the interior volume and a gas distribution assembly having an asymmetrical distribution of gas injection ports. In another embodiment, a method for vacuum processing a substrate is provided that includes disposing a substrate on a substrate support within in a processing chamber, flowing process gas into laterally into a space defined above a gas distribution plate positioned in the processing chamber over the substrate, and processing the substrate in the presence of the processing gas.

The invention relates to a continuous extrusion machining device used for a magnesium alloy sheet strip with a weak basal texture and an extrusion machining method. The device comprises an extrusion system mainly composed of a pressure motor, an extrusion telescopic head, a male die and a female die, and multiple inclined steps gradually getting close to the axis of a die cavity are arranged at the two sides below the upper middle portion in the die cavity of the female die and are distributed asymmetrically. In the extrusion machining process, a magnesium alloy blank is placed in the die cavity of the female die and extruded by the descending male die, and as the male die descends continuously, the magnesium alloy blank is gradually thinned to form a magnesium alloy sheet with the weak basal texture. Due to step-by-step grain refinement and basal texture weakening, extrusion force in the extrusion process is greatly reduced, the average grain size of the magnesium alloy is greatly reduced compared with that of a magnesium alloy extruded normally, and the (0002) basal texture is reduced to 8.2 from 27.6 compared with that of a sheet obtained through normal extrusion.

The present invention is navigation system and method backing up several modes. The navigation system includes fixed imaging equipment, tracking system, surgical operation equipment, sick bed, calibrating pin, calibrating mold and navigation software. It has at least one tracer constituting the world coordinate system, one surgical operation equipment tracer as the surgical operation equipment coordinate system, one sick bed tracer constituting the sick bed coordinate system, one characteristic point set I and one characteristic point set II set inside and outside the calibrating mold separately. After calibration, the disease focus image and the surgical operation equipment are shown in the same coordinate system. The present invention may be used widely in the navigation course of different surgical operations.

An LED package having improved light efficiency, and an illumination system and a projection system employing the LED package. An LED package to provide light to a display panel having a plurality of rotatable micromirrors to form images, the LED package includes a substrate and a plurality of LED chips. The plurality of LED chips are slanted with respect to the substrate at a predetermined angle. The LED package improves the light efficiency by arranging the plurality of LED chips so as to correspond to a shape of effective light having an asymmetric distribution with respect to a stop of a projection lens unit.

An anti-glare LED illuminating apparatus belongs to the semiconductor illuminating technology field and is characterized by being provided with an anti-glare LED illuminating unit U, which comprises an LED light source 1, a combined type reflector 2 and a shielding lace bar 3, or an LED anti-glare illuminating module or an LED anti-glare illuminating die set consisting of the anti-glare LED illuminating unit, the LED light source is arranged between two adjacent shielding lace bars 3, the inner wall of the combined type reflector 2 is an asymmetry reflection plane, optical intensity is distributed asymmetrically along the direction vertical to the combined type reflector 2 axes, a light distribution curve is of lateral wing type, the shielding lace bar 3 limits the glare generated by the LED light source 1 along the axial direction of the combined type reflector 2. The invention has scientific design, reasonable structure, easy production, convenient assembly and good anti-glare effect, reduces the difficulties of manufacturing, processing and assembly and production cost, thus being beneficial to large-scale application.

The invention discloses a multi-degree of freedom electromagnetic damper which belongs to the technical field of motors, solving the problems of the traditional electromagnetic damper of large damping force fluctuation and asymmetric distribution of generated damping force. The multi-degree of freedom electromagnetic damper mainly comprises a primary coil and secondary coils, wherein the primary coil mainly comprises a low-resistivity non-magnetic metal plate, the two-side secondary coils are distributed on the upper side and the lower side of the primary coil symmetrically, two air gaps are arranged between the primary coil and the two-side secondary coils, each-side secondary coil mainly comprises a yoke plate, (n+1) groups of X-direction excitation units and n groups of Y-direction excitation units, n is a positive integer, each X-direction excitation unit or Y-direction excitation unit comprises a plurality of strip-shaped permanent magnets which are sequentially and uniformly arranged on the flat yoke plates along the same direction, the magnetizing direction is vertical to a plane where the air gaps exist, magnetizing directions of every two adjacent permanent magnets are opposite, and magnetizing directions of permanent magnets on the two-side secondary coils corresponding to two sides of the primary coil are the same. The multi-degree of freedom electromagnetic damper is suitable for an electromagnetic damper.

A spraying system is provided including a spray gun and a spray nozzle. The spray gun has a discharge end. A locating pin is arranged on the discharge end of the spray gun. The spray nozzle is selectively mountable on the discharge end of the spray gun. The spray nozzle has a discharge orifice configured to produce a asymmetrically distributed fluid discharge pattern wherein the location of maximum fluid discharge is offset from the center of the fluid discharge pattern. The spray nozzle has an alignment notch extending along an outer surface of the spray nozzle. The locating pin is arranged on the spray gun and the alignment notch is arranged on the spray nozzle such that when the spray nozzle is mounted on the discharge end of the spray gun in a predetermined orientation the locating pin extends into the alignment slot.

The invention discloses an asymmetric birefringence vortex fiber and a manufacturing method of the asymmetric birefringence vortex fiber. The asymmetric birefringence vortex fiber is formed by drawing an optical fiber perform with a single stress area or dual stress areas in a rotary mode, and therefore the asymmetric birefringence vortex fiber has a single spiral stress area or dual spiral stress areas; in addition, due to asymmetric distribution of the stress areas or different materials of the stress areas, spirally-distributed asymmetric stress birefringence is generated in a fiber core of the asymmetric birefringence vortex fiber, a radial phase difference of transmission light waves is accordingly formed, the light waves transmitted in the asymmetric birefringence vortex fiber can accordingly obtain the orbital annular momentum, vortex phase transmission is generated, and a similar vortex light transmission mode is achieved. The asymmetric birefringence vortex fiber overall has the advantages of being tiny in structure, flexible in operation, stable in system, high in interference resistant capacity and the like, and can be used for vortex beam generation, particle control, sensing application and the like.

A multi-state NAND memory cell is comprised of two drain/source areas in a substrate. An oxide-nitride-oxide structure is formed above the substrate between the drain/source areas. The nitride layer acting as an asymmetric charge trapping layer. A control gate is located above the oxide-nitride-oxide structure. An asymmetrical bias on the drain/source areas causes the drain/source area with the higher voltage to inject an asymmetric distribution hole by gate induced drain leakage injection into the trapping layer substantially adjacent that drain/source area.

The invention discloses a method for controlling an asymmetric transverses shifting plate shape of an asymmetric bending roller of a HC rolling mill. The method comprise the following steps of: (a) collecting equipment and process parameters of an HC rolling mill and band steel; (b) discretizing a roller system and a rolling piece unit; (c) computing a preceding tensile stress lateral distribution value and a unit width rolling pressure, which comprise the following steps implemented by a computer system; (d) setting bending roller influence coefficients of a supporting roller, a middle roller and a working roller during an asymmetric rolling according to an asymmetric rolling stressed model of the HC rolling mill; and (e) establishing an asymmetric rolling roller system model on the basis of a model partitioning influence coefficient method. The invention provides a roller system elastic distorted model and a metal three-dimensional plastic distortion model which are suitable for the HC rolling mill; and the preceding tensile stress and a plate convexity of the roller system elastic distorted model and the metal three-dimensional plastic distortion model are in an asymmetric distribution, the error compared with a measured value is small and precision is high. After changing adjusting parameters of the plate shape, the asymmetric rolling controlling model is also suitable for symmetric rolling; and the invention improves plate shape controlling ability of the HC rolling mill and achieves precision requirements of industrial application.

An auxiliary supporting structure for presses, having an auxiliary mold platen having a front surface designed to firmly, but removably, support a half-mold; a number of hydraulic supporting cylinders, which project from the rear of the auxiliary mold platen, in a direction parallel to a reference axis perpendicular to the plane of the auxiliary mold platen; mounting means for firmly, but removably, fixing the hydraulic cylinders to the front surface of a movable mold platen of the press; a hydraulic distributor for regulating pressurized-oil flow to and from each hydraulic cylinder independently of the others; and an electronic central control unit for controlling the hydraulic distributor as a function of signals from a number of external sensors, to enable the hydraulic cylinders to instantaneously compensate any asymmetric distribution of the mechanical forces exerted on the half-mold as the plastic material is injected.

The invention discloses a driving and suspension integrated multi-phase fly wheel energy storage device, which comprises a shell, a main shaft, a current transformer and a controller, wherein the upper, middle and lower parts of the main shaft are provided with a first multi-phase motor, a fly wheel and a second multi-phase motor respectively; each multi-phase motor comprises a rotor and a stator; each stator is provided with n phases of windings; each phase of winding is a distributed winding and is asymmetrically distributed along the circumference of an air gap; and the current transformer is an n-phase current transformer. According to the driving and suspension integrated multi-phase fly wheel energy storage device, fly wheel energy storage, and driving and magnetic suspension functions of the multi-phase motors are integrated into a whole; radial magnetic bearing components at two ends of the main shaft are reduced, so that extra axial space is not occupied; the system has a simpler and more compact structure; the bearing rigidity and the space utilization rate are greatly improved; and the driving and suspension integrated multi-phase fly wheel energy storage device has broad application and development prospect in the high-speed fly wheel energy storage system of high energy storage density, high transformation efficiency, low idle speed loss and long service life.

An electromagnetic polarizing structure can polarize a non-polarized (or a partially polarized) electromagnetic (EM) wave completely. The EM polarizing structure includes a layered structure. Several medium nodes are located in such a polarizing layer and distributed as a two-dimensional unit cell array on a plane. The array unit cell has an operation axis, which passes the diagonal. These medium nodes are distributed asymmetrically with respect to the operation axis. A polarizing EM device with the foregoing EM polarizing structure and a radiation-active structure can thus emit a polarized EM wave.

The invention relates to a method for preparing organic-inorganic composite microspheres with eccentric structures, which is characterized by comprising the following steps of: performing surface modification on inorganic particles; adding a hyperdispersant, an assistant emulsifier, and a styrene monomer into the modified inorganic particles to prepare an oleic phase; and then mixing the oleic phase and an aqueous phase prepared from a surfactant and distilled water to pre-emulsify, stirring the mixture, raising the temperature and performing centrifugal separation on the mixture to obtain the organic-inorganic composite microspheres with the eccentric structures. In the method for preparing the organic-inorganic composite microspheres with the eccentric structures, the inorganic particles are subjected to surface modification, and then the composite microspheres in which the inorganic particles are distributed asymmetrically in the organic microspheres are prepared by a miniemulsion polymerization method. The organic-inorganic composite microspheres with complex eccentric structures are prepared by the simple and convenient miniemulsion polymerization method; and the grain size of the microspheres is 300 to 900 nm, and the solid content is 8 to 40 percent.

An optical reflector for emitting light generated from a light source, such as a light emitting diode. According to one embodiment, the optical reflector includes a plurality of panels forming a cavity, the cavity having a light receiving end and a light output end, the inner side of the cavity having a reflective surface, and wherein the cavity has a plurality of stepped layers along the inner surface of the cavity extending from the light receiving to the light output end; and wherein the light receiving end is configured to receive the light generated from the light source, and the stepped layers of the cavity are configured to reflect the light generated from the light source and emit the reflected light from the light output end in an asymmetrical distribution. Embodiments of present invention use a trapezoidal shape to create the asymmetrical output distribution.

In order to achieve better fuel distribution despite an oversized fuel injector nozzle relative to the impingement cross-section of an air flow directed towards that nozzle, an asymmetric distribution of fuel is provided. This asymmetric distribution is achieved by providing fuel distribution structures about the injector nozzle which present varying amounts of fuel to the air flow dependent upon the localised flow pressure in the air flow presented to the nozzle. Such asymmetric distribution of fuel is achieved by providing passages or jets of varying cross-section or distribution/spacing at different parts of the fuel injection nozzle dependent upon incident flow pressure. Thus, both parts of the injector nozzle directly impinged by the air flow generally present more fuel to that flow compared to depleted flow pressure zones of the air flow.

Living cells, such as red blood cells (RBCs) modified with functional micromotors with the aid of ultrasound propulsion and magnetic guidance. Iron oxide nanoparticles are loaded into the RBCs, where their asymmetric distribution within the cells results in a net magnetization, thus enabling magnetic alignment and guidance under acoustic propulsion. The RBC motors display efficient guided and prolonged propulsion in various biological fluids, including undiluted whole blood.