7results about How to "Reduce edge effects" patented technology

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.

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.

The present application relates to the technical field of ultra-thin PI substrate processing equipment, in particular to a slit coating thickness control structure for ultra-thin PI substrate processing, which comprises a transverse guide rail, an L-shaped support and a scraper mold, the front end of the transverse guide rail is provided with a screw rod transmission mechanism for providing transverse power, the front end of the screw rod transmission mechanism is slidably connected with a guide rail, the front end of the guide rail is provided with a pressure plate, the rear end of the pressure plate is welded with a mounting plate, the upper ends of the transverse guide rail are provided with L-shaped supports on both sides, and the upper ends of the L-shaped supports are connected with gaskets in the middle. The mounting plate and the pressure plate constitute an L-shaped limiting baffle, the pressure plate is attached to the base of the slit coater, and the polyimide is constrained, so that the edge of the slurry is prone to "edge bulging" or shrinkage due to surface tension during scraping. The constraints on both sides can physically block the overflow of the slurry, force the film layer to be more consistent in width and thickness, and reduce the edge effect.

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.

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.

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.

The invention discloses a terrace side wall lateral evaporation blocking control and yield increasing binary covering method and structure, and belongs to the technical field of dry farming water and soil conservation. In order to solve the problems of lateral migration of soil moisture and low edge yield caused by strong evaporation of terraced field ridges (side walls), the method adopts a'straw and sunscreen net 'binary coupling covering mode. The structure comprises a flat soil substrate layer, a diffusion resistance layer formed by crop straws, and a radiation decoupling and fixing layer formed by a black HDPE (High-Density Polyethylene) sunscreen net from inside to outside. According to the method, lateral evaporation is effectively inhibited and the transverse water potential gradient in the terrace is eliminated through multiple synergistic mechanisms such as radiation interception and cooling by the sunscreen net, water vapor diffusion resistance increase by the straw layer and near-surface wind speed weakening by the composite structure of the sunscreen net and the straw layer, so that soil moisture homogenization is realized, and the yield of crops at the edge of the terrace and the rainfall utilization efficiency of the system are remarkably improved. The method is low in cost, easy to construct, eco-friendly and suitable for dry farming terraced fields such as loess plateau.