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41results about How to "Reduce edge effects" patented technology

Parallel-coupled self-imaging external-cavity coherent array semiconductor laser and preparation method thereof

ActiveCN116995534BParallel coupling is efficientreduce edge effectsMechanical engineeringDielectric layer
The application discloses a kind of parallel coupling self-imaging external cavity coherent array semiconductor laser, comprising: semiconductor laser chip array, light transmission dielectric layer and external cavity reflection layer;Semiconductor laser chip array includes multiple light emitting units, light transmission dielectric layer and external cavity reflection layer form laser self-imaging external cavity;The non-light emitting area of semiconductor laser chip array light emitting surface is coated with high reflection film, and the feedback light that cannot be injected into the light emitting unit due to incomplete self-imaging at the edge of semiconductor laser chip array can oscillate in self-imaging external cavity multiple times to reform the self-imaging that can be completely injected into the light emitting unit.The application improves the injection of laser outside the light emitting area, can efficiently parallel coupling all light emitting units including edge in chip array, eliminate the edge effect of chip array generated by self-imaging external cavity feedback, enhance the feedback efficiency of self-imaging external cavity, obtain the coherent array laser output of high parallel coupling efficiency, high efficiency optical mutual injection.
Owner:BEIJING UNIV OF TECH

Capacitive pressure sensor

The utility model relates to a capacitive pressure sensor, which comprises a shell, a main body, an upper polar plate and a lower polar plate, the main body, the upper polar plate and the lower polar plate are arranged in the shell, a pressure sensing diaphragm is arranged on the main body, a middle column is arranged on the pressure sensing diaphragm, a movable polar plate is arranged on the middle column, and the movable polar plate is arranged between the upper polar plate and the lower polar plate. And metal protection rings are arranged on the upper polar plate and the lower polar plate. The differential capacitance principle is adopted, the movable polar plate is connected with the pressure sensing diaphragm through the middle column, and when measured pressure pushes the pressure sensing diaphragm to deform, the pressure sensing diaphragm synchronously pushes the movable polar plate to move between the upper polar plate and the lower polar plate, so that a differential structure is formed; pressure measurement is achieved by measuring capacitance changes formed by the movable polar plate, the upper polar plate and the lower polar plate, and small water level changes are accurately measured under the condition that high sensitivity, high precision and high stability are guaranteed.
Owner:吕刚

A high-pressure injector for improving the sensing accuracy of an injection process

ActiveCN117653827Bobvious mutation effectEasy to intercept
The application discloses a high-pressure injector for improving injection process sensing precision, relates to medical devices, and aims at the problem of edge effect of reflected light of a reflecting sheet in the prior art. The reflecting sheet is characterized in that the edge thereof is outwardly convex towards an infrared emission detection array. The advantage of the application is that the infrared light reflected at the edge will have an obvious mutation effect after the reflecting surfaces at both ends of the reflecting sheet are made outwardly convex, thereby reducing the edge effect in the original reflected light. The light intensity curve obtained by the infrared emission detection array will have an obvious mutation at the edge of the interval, and the electric control program of the machine head can easily and accurately intercept the required position interval for midpoint value taking.
Owner:DONGGUAN ONE STAR MEDICAL TECH CO LTD

Modularized fluorine ion exchange column

The utility model provides a modularized fluorine ion exchange column, which adopts a column body structure formed by connecting a plurality of sections of flanges to realize height adjustability and adapt to different fluorine concentration and flow requirements. Spiral flow guide ribs are arranged in the column to guide wastewater to spirally flow, fluid distribution is optimized through centrifugal force, and the fringe effect is reduced; the assembling precision between the columns is ensured through a concave-convex positioning mechanism, and the corrosion resistance is enhanced by matching with a polytetrafluoroethylene lining. The system integrates a water distribution plate and funnel combined structure, realizes flow equalization through groove water distribution holes, eliminates a bias flow phenomenon, and improves the resin utilization rate. And the saturation of the resin can be observed at any time through fluorine ion color-changing exchange resin and an observation window. The resin bracket is of a pull ring type quick release structure, and quick maintenance is achieved through a tap bolt and a sealing ring annular groove. According to the device, through modular combination, flow field optimization and visual monitoring, the fluorine ion deep purification efficiency and the operation convenience are remarkably improved.
Owner:JIANGSU SAFELY ENVIRONMENT ENG

A portable plasma experimental device for field tests

The invention discloses a portable plasma experimental device for field tests, comprising a flat-mounted probe or other sensor (1), a mechanical pump (2), a portable barometer (3), a plasma generator (4), a high-frequency power supply (5), and a gas source (6); a three-way interface is provided at one end of the plasma generator (4), wherein the first interface of the three-way interface is a probe port (7), the second interface of the three-way interface is connected to the mechanical pump (2), and the third interface of the three-way interface is connected to the portable barometer (3); the other end of the plasma generator (4) is connected to the gas source (6); a hollow solenoid (11) is wound on the outer surface of the plasma generator (4); and the high-frequency power supply (5) is connected to the hollow solenoid (11). The device of the invention is small in size, but has an ingenious structure and is simple to operate. The plasma distribution area meets the requirements of probe measurement and can work in a steady state for a long time.
Owner:UNIV OF SCI & TECH OF CHINA

Acceleration sensor and method of manufacturing the same

The application discloses an acceleration sensor and a manufacturing method thereof. The acceleration sensor comprises a first capacitor, a second capacitor, a third capacitor and a fourth capacitor on a substrate. The first capacitor comprises a second detection mass and a first detection electrode. The second capacitor comprises a first detection mass and a first detection electrode. The third capacitor comprises a second detection mass and a second detection electrode. The fourth capacitor comprises a first detection mass and a second detection electrode. The first detection electrode and the second detection electrode are located between the first detection mass and the second detection mass and are independent of each other and located in the same plane. The application forms a full-bridge capacitor detection structure by the first detection mass, the second detection mass, the first detection electrode and the second detection electrode located between the first detection mass and the second detection mass, which can effectively reduce parasitic capacitance, optimize noise, improve stability and sensitivity.
Owner:HANGZHOU SILAN MICROELECTRONICS CO LTD

Pole piece and battery

ActiveCN222168432UIncrease internal resistanceIt is not prone to the problem of edge lithium precipitationNon-aqueous electrolyte accumulator electrodesLi-accumulatorsElectrical batteryInternal resistance
The utility model relates to the technical field of lithium batteries, and provides a pole piece and a battery. When the pole piece is a positive pole piece, the internal resistance of the active material coatings of the second edge area and the third edge area is larger than the internal resistance of the active material coating of the main body area, so that the lithium removal speed of the edge areas of the positive pole piece is slowed down, and the phenomenon that the lithium precipitation potential of a negative pole is too low due to the fact that the concentration of overhang edge electrolyte salt is too high in the rapid charging process is reduced; and the problem of lithium separation on the edge of the corresponding negative electrode edge area is not easy to occur. When the pole piece is a negative pole piece, the impedance of the active material coating of the marginal area b and the marginal area c is smaller than that of the active material coating of the main body area, so that the diffusion speed of lithium ions in the marginal areas of the negative pole piece is increased, and lithium ions separated from the positive pole side can be quickly embedded into the edge of the negative pole; and the problem of lithium separation on the edge of the corresponding negative electrode edge area is not easy to occur.
Owner:ZHUHAI COSMX BATTERY CO LTD

Negative ion collector, negative ion concentration detection device, detection method and detector

ActiveCN113567504Bachieve accurate displayreduce edge effects
The present invention proposes a negative ion collector, a negative ion concentration detection device, a detection method and a detector. The detection device includes a negative ion collector, a collection plate of the negative ion collector is electrically connected to a polarization voltage circuit module capable of generating a gradient-changing polarization voltage through an external interface, and the negative ion collector is electrically connected to the polarization voltage circuit module capable of generating a gradient-changing polarization voltage. By changing the polarization voltage in steps, the conversion relationship between the polarization voltage and the corresponding collection current is found, and a multivariate linear equation group between the polarization voltage and the corresponding current is established. The solution of the equation group is the negative ion concentration value of the corresponding mobility. The present invention also provides a negative ion collector, wherein the collection plate and the polarization plate are respectively fixed on the upper insulating seat surface and the lower insulating seat surface, and the collection plate and the polarization plate are arranged parallel and symmetrically from top to bottom; the external interface is respectively integrated on the collection plate and the polarization plate, and extends out of the closed upper and lower insulating seats through the through hole; the fan is fixed at the cross section of the upper and lower insulating seats.
Owner:BEIJING QINGBO YIKANG TECH CO LTD +1

Laser shock peening method based on zonal iterative dual constraint

PendingCN122583758AIncreased process reliabilityStrong process flexibility
The application discloses a laser shock peening method based on partition iteration double constraint, and relates to the technical field of laser processing. The method comprises the following steps: dividing a to-be-processed surface area of a to-be-processed component into a plurality of subareas, and setting laser shock points in each subarea; performing partition iteration double constraint traversal shock; in each iteration, firstly randomly disturbing the macro processing sequence of all subareas, then selecting one point from the unshocked points of each subarea, arranging the selected points according to the disturbed subarea sequence to form a shock subsequence of the current iteration; repeating the iteration until all the points are traversed to form a first layer of shock strengthening layer; and continuously repeating the superposition until a preset shock layer number is reached. The application can significantly inhibit the anisotropy of residual stress and the edge effect, and realize uniform strengthening.
Owner:JIANGSU UNIV

Optical element processing method using a large-sized ion source

The application relates to the field of advanced optical manufacturing technology, in particular to an optical element processing method realized by using a large-size ion source, which comprises the following steps: surface shape detection and surface shape error analysis, outputting a target removal amount distribution and an ion beam removal function, obtaining the removal function of the ion beam flux by using a spot method, calculating the residence time distribution according to the removal amount distribution and the removal function of the ion beam flux, obtaining the spatial distribution of the ion beam flux density, and adjusting the uniformity of the ion beam flux emitted by the ion source; controlling the ignition of the aperture ion source, processing the ion beam flux emitted by the ion source according to the residence time distribution; after processing, the surface shape of the optical element is detected and the surface shape error is analyzed, and if the requirement is met, the processing is completed. The ion source with an aperture of 220 mm is used for surface correction, the uniformity of the ion source beam is optimized, the ion source beam is in a Gaussian distribution, and precise removal of a large-aperture high-slope optical element to be processed is realized.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Spraying device

PendingCN122558684Aachieve independent controlreduce edge effects
This application provides a spraying device, relating to the field of semiconductor technology, comprising: a chamber substrate having opposing first and second end faces, the chamber substrate including at least two jet chambers, each jet chamber having a jet outlet on the first end face; the at least two jet chambers including a cylindrical central jet chamber and at least one annular jet chamber arranged sequentially around the central jet chamber, with an annular isolation plate disposed between adjacent jet chambers; an air inlet assembly disposed on the second end face, the air inlet assembly communicating with the jet chambers; at least two stages of flow equalization and mixing structures, stacked between the first and second end faces, with a flow equalization plate disposed between the flow equalization and mixing structures, the flow equalization and mixing structures communicating between the air inlet assembly and the jet chambers. This application sprays process gas into different regions of the wafer in the radial direction through the jet outlets of different jet chambers, independently controlling the gas flow rate and ratio sprayed onto the wafer in the radial direction, thereby reducing the edge effect of the wafer.
Owner:CHONGQING INNOEVSIC TECHNOLOGY CO LTD

Display panel and display device

The invention discloses a display panel and a display device.The display panel comprises a substrate, a pixel driving layer, a pixel defining layer, a plurality of light-emitting units, a packaging layer and a color filter layer, a first groove is formed in the position, corresponding to an opening area, of the packaging layer, and a second groove is formed in the position, corresponding to the opening area, of the packaging layer; the color filter layer comprises a plurality of color filter parts and a plurality of shading parts, the color filter parts are arranged in the first groove, the color filter parts comprise color filter parts of at least two colors, the shading parts are arranged in the non-opening area, and the shading parts are formed by overlapping the color filter parts of different colors. According to the display panel, the first groove is formed to contain the color filter part, the shading part is formed by overlapping the color filter parts of different colors, the manufacturing problem of the color filter parts is solved, the light emitting efficiency of the color filter parts is improved, and the display effect of the display panel is improved.
Owner:MIANYANG HKC OPTOELECTRONICS TECH CO LTD +1

Igniter for sintering machine

ActiveCN224284612UIncreasing the thicknessincrease ignition strengthGaseous fuel burnerMetallurgyGas supply
The utility model relates to an igniter for a sintering machine, which is applied to the technical field of sintering production, solves the problems that the edge effect is easy to generate on the edge of the existing sintering pallet, and the productivity of the sintering machine and the quality of sintered ore are restricted. An ignition assembly I and an ignition assembly II are sequentially arranged on the upper end face of the furnace body in the running direction of the sintering pallet, the ignition assembly I comprises at least two edge ignition nozzles, and the two edge ignition nozzles are oppositely arranged on the two sides of the furnace body in the transverse direction. The two edge ignition nozzles are used for igniting sintering materials laid on the edges of the two transverse sides of the sintering pallet, the ignition assembly II comprises a plurality of first ignition nozzles, the first ignition nozzles are distributed on the furnace body in at least one row, and the ignition assembly further comprises a gas source assembly for supplying gas to the edge ignition nozzles and the first ignition nozzles; the method has the effects of increasing the thickness of a combustion layer, inhibiting the edge effect, improving the ignition strength of a mixture at the edge of the sintering pallet and effectively reducing the return rate of sintered ore.
Owner:CHANGSHU LONGTENG SPECIAL STEEL CO LTD

High-voltage circuit breaker bolt loosening fault diagnosis method and related equipment

The invention belongs to the field of high-voltage circuit breaker fault diagnosis, and discloses a high-voltage circuit breaker bolt loosening fault diagnosis method and related equipment. According to the method, a voiceprint prototype is finally formed in an embedding space through the steps of extracting the occurrence moment and the termination moment of a bolt loosening sound signal, constructing an all-pole model, solving an all-pole filter coefficient, calculating a group delay function, performing discrete cosine transform to form a frequency spectrum enhanced voiceprint feature and the like in sequence. The attribution probability of the voiceprint to be diagnosed is determined by calculating the distance between the voiceprint to be diagnosed and the voiceprint prototype, so that the bolt loosening fault is accurately diagnosed; the method does not depend on a huge sample data set, but represents different bolt loosening states based on the voiceprint characteristics of the sound signals sent by breaking of the circuit breaker, the formant of the sound signal frequency spectrum is enhanced, the representation effect of the bolt loosening of the high-voltage circuit breaker is improved, and the reliability of the high-voltage circuit breaker is improved. And the bolt loosening fault diagnosis of the high-voltage circuit breaker under the condition of insufficient actual samples is realized.
Owner:XIAN XD SWITCHGEAR ELECTIC CO LTD +1

Image processing method and device based on deep learning, medium and program product

The invention relates to the technical field of image processing, in particular to an image processing method and device based on deep learning, a medium and a program product. The image processing method comprises the following steps: providing an initial image, setting an extended epitaxial region on the outer contour of the initial image, and obtaining an intermediate image containing the initial image and the epitaxial region; the intermediate image is uniformly segmented to obtain a plurality of initial sub-images, each initial sub-image comprises a sub-image body and an edge band which expands outwards relative to the outer contour of the sub-image body, the width of the edge band is consistent with the width of the epitaxial region, and an overlapping region is arranged between the sub-image bodies in the adjacent initial sub-images; inputting all the initial sub-images into a deep learning model for image processing to obtain corresponding optimized sub-images; and splicing the sub-image bodies of all the optimized sub-images according to the segmentation positions of the initial sub-images to obtain an optimized image.
Owner:SHENZHEN JINGYUAN INFORMATION TECH CO LTD

Alternating current corona aging experiment device and multi-rod plate electrode structure optimization method

The invention discloses an alternating current corona aging experiment device and a multi-rod plate electrode structure optimization method, and the device comprises a containing part which is internally provided with a support; the voltage-sharing cover and the disc electrode are arranged on the support, a cylindrical electrode is arranged at the bottom of the voltage-sharing cover, a polymer sample is arranged at the top of the disc electrode, and the polymer sample is located below the cylindrical electrode; one end of the high-voltage lead is connected with the top of the voltage-sharing cover, the other end of the high-voltage lead extends out of the accommodating part and is connected with a protective resistor, the protective resistor is connected with an alternating-current high-voltage source, one end of the alternating-current high-voltage source is used for providing high voltage, and the other end of the alternating-current high-voltage source is grounded. The voltage-sharing cover and the disc electrode are arranged on the bracket, so that the uniformity and the stability of electric field distribution in the experiment process are ensured, the voltage-sharing cover can reduce the fringe effect, and the electric field applied to a polymer sample is more uniform by adjusting the distribution of the cylindrical electrode; the problem that the degradation degrees of all the aging areas of the solid material are inconsistent is solved.
Owner:XI AN JIAOTONG UNIV

Silicon carbide-based electrostatic induction thyristor and preparation method thereof

The invention relates to a silicon carbide-based electrostatic induction thyristor, which comprises an N + rectangular channel region close to an N-type drift region and an N + curved channel region positioned on the N + rectangular channel region, the P + type gate region is of a three-section type gate structure and specifically comprises a P + type rectangular gate region close to the N type drift region, a P type bent gate region located on the P + type rectangular gate region and a gate region adjacent aluminum contact electrode part located on the P type bent gate region. And the bottom of the trench structure cathode is also provided with a cathode bottom P + region opposite to the P-type bent gate region. By introducing a new structural design, stronger grid control capability, higher breakdown voltage and better current uniform distribution are realized.
Owner:LANZHOU UNIV

Printed circuit board and design method for resistance balance between PAD electroplated on printed circuit board

The invention provides a printed circuit board and a design method for resistance balance between electroplated PADs on the printed circuit board, and particularly, all the electroplated PADs on the board surface of the printed circuit board are grouped according to the areas of the electroplated PADs on the board surface, in any electroplating PAD group, the electroplating PAD group is connected to a first guide wire adjacent to the electroplating PAD group through a second guide wire, and the electroplating PAD group is connected to a second guide wire through a third guide wire. And each electroplating PAD in the group is connected to one end of the second guide wire through the corresponding branch lead, so that the resistance of all the electroplating PAD on the printed circuit board is the same as the resistance of the conducting metal frame. According to the invention, the inter-group design and the intra-group design are carried out on the leads of the electroplated metal PAD, so that the arrangement mode and size of the leads are simplified while the resistance balance among all the electroplated PAD on the printed circuit board is effectively realized; the electroplating uniformity of all electroplated PADs on the surface of the printed circuit board is improved, meanwhile, the metal layer design of the board surface of the printed circuit board is simplified, the utilization rate of the board surface is improved, and the production cost is saved.
Owner:GUANGZHOU TERMBRAY ELECTRONICS TECH CO LTD

A 96-well PCR plate

The utility model relates to PCR plate technical field especially relates to a 96 hole PCR plate, including the plate body, the plate body evenly is provided with several reaction tubes, the hole wall thickness of reaction tube is linearly reduced along the radial distance from the center to the periphery, the hole wall of reaction tube includes plastic base body, heat conducting metal foil, insulating layer, the hole wall thickness is linearly reduced along the radial distance from the center to the periphery, can effectively reduce the thermal resistance, the reaction tube of periphery can be in contact with the heat source completely, reduces the thermal loss and appears the edge effect, and the heat conducting metal foil is inbedded in the reaction tube, and the plastic base body is combined and conducts heat, and the heat conducting metal foil does not contact with the reaction liquid directly, avoids the influence PCR reaction, can effectively improve the heat conducting performance of plastic base body simultaneously, and the heating rate is fast, effectively solves the heat loss difference, reduces the biological pollution risk.
Owner:DONGGUAN JIJIAN BIOTECH CO LTD

Magnetic bias suppression transformer

The invention discloses a magnetic bias suppression transformer which comprises a heat conduction plate, a first O-shaped magnetic core, a second O-shaped magnetic core and a third O-shaped magnetic core are sequentially fixed to the heat conduction plate side by side, each side column of the first O-shaped magnetic core is sleeved with a first framework, each side column of the second O-shaped magnetic core is sleeved with a second framework, each side column of the third O-shaped magnetic core is sleeved with a third framework, and the first framework and the second framework are sequentially fixed to the heat conduction plate. Secondary windings which are connected end to end are wound around each first framework and each second framework, a fourth framework is sleeved on the secondary windings wound around the second frameworks, primary windings which are connected end to end are wound around each third framework and each fourth framework, and an insulating layer is coated on the first O-shaped magnetic core, the second O-shaped magnetic core and the third O-shaped magnetic core; the linear inductors are respectively connected in series at two ends of the primary winding and the secondary winding to obtain excitation inductance, so that excitation inrush current is inhibited, the direct current magnetic bias phenomenon is improved, the assembly is convenient, and the space utilization rate is high.
Owner:西安为光能源科技有限公司

Ball array type magnetic resistance linear time grating displacement sensor and displacement measurement method

The invention relates to the technical field of precision linear displacement measurement sensors, and discloses a ball array type reluctance linear time grating displacement sensor and a displacement measurement method.The ball array type reluctance linear time grating displacement sensor comprises a stator and a mover, and the stator comprises a stator base body and a plurality of steel balls installed in the stator base body; the rotor comprises a rotor base body and a sine / cosine winding fixed on the outer surface of the rotor base body, the sine winding is provided with an S + excitation winding, an S-excitation winding and a sine induction winding, and the cosine winding is provided with a C + excitation winding, a C-excitation winding and a cosine induction winding. The sine induction winding and the cosine induction winding respectively generate two paths of electric signals U1 and U2, a traveling wave signal U carrying linear displacement information is output through the logic circuit and is compared with a same-frequency reference signal Uf in phase, and displacement decoupling is achieved. The device can effectively reduce the magnetic field edge effect, improves the displacement signal sensing quality, does not depend on an ultra-precision manufacturing process, simplifies the overall structure, and reduces the manufacturing cost.
Owner:CHONGQING UNIV OF TECH

Miniature light-emitting element and light-emitting equipment

The invention provides a miniature light-emitting element and light-emitting equipment, and relates to the technical field of LEDs. A target epitaxial layer is arranged above and / or below an active light-emitting layer, and the resistivity of an edge region of the target epitaxial layer is greater than that of other regions of the target epitaxial layer, so that current is effectively prevented from flowing through the edge of the micro light-emitting element, and the purpose of limiting the current to only flow through a middle region of the active light-emitting layer is achieved. Therefore, the edge effect of the miniature light-emitting element is reduced, and the light-emitting performance of the miniature light-emitting element is improved.
Owner:XIAMEN FUTURE DISPLAY TECH RES INST CO LTD

Gallium nitride-based semiconductor laser element

The invention discloses a gallium nitride-based semiconductor laser element, which sequentially comprises a substrate, a lower limiting layer, a lower waveguide layer, an active layer, an upper waveguide layer and an upper limiting layer from bottom to top, wherein a Flokey instantaneous energy band regulation and control layer is arranged between the active layer and the lower waveguide layer; in element distribution of the Flokey instantaneous energy band regulation and control layer has curve distribution of a function y = ax < 2 > + bx + c (a is greater than 0); in / C element proportion distribution of the Flokey instantaneous energy band regulation and control layer has curve distribution of a function y = dx2 + ex + f (d > 0); in / H element proportion distribution of the Flokey instantaneous energy band regulation and control layer has a function y = A + B * ex / cosx first two-quadrant curve distribution; in / O element proportion distribution of the Flokey instantaneous energy band regulation and control layer has curve distribution of a function y = C + x2 + ex. According to the invention, an electron energy band periodically arranged in a momentum space is constructed, so that the change of the quantum state and the change of the electron structure are controlled, and the coupling of the light and the pseudo-spin degree of freedom and the energy band reformation are enhanced to generate an instantaneous energy gap.
Owner:GEN SEMICONDUCTOR (ANHUI) CO LTD

A pseudo virtual element method for small scale tightly coupled electrically scanned arrays

The application discloses a pseudo-virtual element method for a small-scale tightly-coupled electric scanning array, which comprises the following steps: S1, performing period boundary debugging and determining basic unit parameters; S2, establishing a complete array comprising effective units (1) and pseudo-virtual elements (2), and performing small signal feeding on the pseudo-virtual elements (2) to determine the size of the pseudo-virtual elements (2) and small signal power; S3, setting the input impedance of the pseudo-virtual elements (2) as Z1, setting the input impedance of the effective units (1) as Z2, simultaneously connecting the virtual elements without adjacent effective units (1) to a preset load as real virtual elements (3), simulating the complete array, and fine-tuning structure parameters and the size of a power divider (4) to complete the design. The application can significantly suppress the performance deterioration caused by the edge effect, improve low-frequency standing wave and radiation performance, maintain array phase consistency and scanning performance, and is suitable for super wideband small-scale tightly-coupled electric scanning arrays and has strong engineering implementation.
Owner:JING LIN CHENGDU SCI & TECH

Highly hydrophilic wear-resistant cmp polishing pad and its preparation method and application

PendingCN122500615ASolve the problem of dry spotseasy to spread
This invention relates to the field of chemical mechanical polishing (CMP) pad technology, specifically to a highly hydrophilic and wear-resistant CMP polishing pad, its preparation method, and its application. The invention uses cyanosiloxane monomers as raw materials, preparing highly active carboxylate silsesquioxane powder through one-step alkaline hydrolysis, and achieving nanoscale uniform dispersion of this powder in polyurethane. After pre-treating the base fabric with an acid-base oscillating impregnation agent, the nanoscale uniformly dispersed slurry is coated onto the base fabric, and then solidified to obtain the target product. This invention solves the technical problems of difficulty in balancing hydrophilicity and wear resistance, and poor polishing uniformity in existing hydrophilic modification polishing pads. The polishing pad produced is used for wafer polishing, exhibiting less than 3% intra-wafer non-uniformity, fewer surface defects, and extended service life. The process of this invention is fully compatible with existing wet production lines for polyurethane polishing pads, requiring no additional equipment. The process is simplified, batch stability is strong, and industrial mass production is possible, adapting to the high-precision, low-defect polishing requirements of advanced semiconductor processes below 14nm.
Owner:WANHUA CHANGZHOU NEW MATERIAL TECH

A laser bending forming device and method for fine corrugated plate

ActiveCN114289578BAchieving Precise FormingReduce the number of clampingErbium lasersMobile station
A micro-corrugated plate laser bending forming device includes a workbench, a two-dimensional moving platform is provided on the workbench, and a machine tool dividing head base is connected to the two-dimensional moving platform by fastening bolts; a main shaft is horizontally passed through the top of the machine tool dividing head base, the left end of the main shaft extends out of the machine tool dividing head base and is connected to a rotating handle, and the right end of the main shaft extends out of the machine tool dividing head base and is connected to a three-jaw chuck through a connecting device; a flat plate fixture is clamped in the three-jaw chuck; the flat plate fixture includes an upper flat plate fixture and a lower flat plate fixture, and a metal plate to be processed is clamped between the upper flat plate fixture and the lower flat plate fixture. The present invention also provides a processing method based on a micro-corrugated plate laser bending forming device. The present invention has a simple process, and can realize the precise forming of small and medium-sized equally spaced micro-corrugated plates without a mold, and reduces the number of back and forth clamping times of the metal plate when the laser is scanned forward and backward. Simple pretreatment of the metal plate can minimize the "edge effect" during laser bending forming.
Owner:ZHEJIANG UNIV OF TECH

Micro-LED structure containing driver and preparation method thereof

ActiveCN119545997ASolve problems that require additional driversavoid bondageSelective area epitaxyGallium nitride
The invention discloses a micro-LED structure with a driver and a preparation method of the micro-LED structure. The micro-LED structure comprises a gallium nitride (GaN) layer, a mask layer with micropores, a GaN three-dimensional triangular island, a high electron mobility transistor (HEMT) structure and a Micro-LED structure, wherein the upward crystal face of the GaN layer is a non-polar face, the HEMT structure is arranged on the inclined face of one side of the triangular island, and the Micro-LED structure is arranged on the inclined face of the other side of the triangular island. The GaN island of a three-dimensional structure is obtained by utilizing selected area epitaxy and combining with lateral epitaxy, the GaN island naturally forms a bilaterally symmetrical structure due to the crystal attribute, the HEMT and the Micro-LED structure are arranged on the two sides respectively, the HEMT on one side can be directly utilized to drive the Micro-LED on the other side, the problem that a traditional Micro-LED needs to be additionally driven is solved, and the GaN island can be used for driving the LED on the other side. And the constraint that micropores are current when a traditional selective area epitaxy MicroLED structure is adopted is avoided. Besides, the Micro-LED with an independent structure is grown on the inclined plane of the triangular island, so that the adverse effect of the traditional micromachining technology on the etching damage of the quantum well and the P-type layer can be avoided, the edge effect of each light-emitting unit is effectively inhibited, and the light-emitting efficiency is improved; the light-emitting units are arranged on the basis of close packing, the area of the epitaxial wafer can be effectively utilized to the maximum extent, and economic benefits are maximized.
Owner:NANJING XIAOQINGNING TECHNOLOGY SERVICES CO LTD

Liquid metal battery electrode material separation device and use method

The invention discloses a liquid metal battery electrode material separation device, and relates to the technical field of energy storage batteries, the liquid metal battery electrode material separation device comprises a fixed seat, a reaction cavity, a corundum crucible, a temperature control assembly, an electrolysis structure, an anti-dissipation structure, a collection structure, a negative electrode extraction pipe and a positive electrode extraction pipe; the fixed seat comprises a bottom plate and a heat insulation supporting seat; the heat insulation supporting seat is mounted at the top of the bottom plate; the invention also discloses a use method of the liquid metal battery electrode material separation device. According to the liquid metal battery electrode material separation device, through cooperation of the annular anode basket and the cathode rod in the center, the electric field edge effect can be eliminated, and the electrolysis uniformity is improved; in addition, directional separation of the dual-electrode metal is achieved through efficient conduction of the Mg-stabilized zirconia diaphragm on lithium ions and efficient blocking of the Mg-stabilized zirconia diaphragm on antimony and bismuth ions, and efficient and directional separation and recovery of the high-purity positive and negative electrode metal can be achieved by combining the density difference of the positive and negative electrode metal and a designed bimetal exclusive extraction path.
Owner:WUHAN JIZHAO ENERGY STORAGE TECH CO LTD

Non-contact high voltage measuring device with self-checking capability and measuring method thereof

The application discloses a non-contact high-voltage measuring device with self-checking capability and a measuring method thereof. The device comprises an electric field sensing device, a signal conditioning circuit and a received signal processing device. The core of the electric field sensing device is two measuring electrode plates and a shielding electrode plate. The two measuring electrode plates are placed inside the shielding electrode plate and symmetrically distributed relative to the measured wire. Electrical insulation is realized between each electrode plate through insulating elastic material. The signal conditioning circuit is used to sample the voltage signals on the two measuring electrode plates capable of representing the electric field intensity and to amplify and filter the voltage signals. The received signal processing device is used to process and output the sampled voltage signals and to judge the correctness of the measurement data. The electric field sensing device of the application can effectively improve the accuracy of the measuring device and make the measuring device have self-checking capability, thereby improving the reliability of the measurement.
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD