69results about How to "Improve injection efficiency" patented technology

This invention discloses a pressure control device, method, and system for the coexistence of different types of full-containment tanks. It includes: multiple full-containment tanks, each equipped with a first pressure sensor, and each full-containment tank connected to an input pipe via a valve group; each full-containment tank is connected to a flare and an output pipe, with a first control valve between the flare and the full-containment tank; the first control valve and valve group of each full-containment tank are respectively connected to a controller, which controls the opening and closing of the first control valve and valve group; two full-containment tanks with different design pressures share a single output pipe, and a pressure protection system is installed on the output pipe between the two full-containment tanks. The pressure protection system includes at least one first shut-off valve and a second pressure sensor connected to the controller; in response to a trigger signal from the second pressure sensor, the controller controls the opening and closing of the first shut-off valve. This allows for the simultaneous operation of full-containment tanks with different design pressures while ensuring the safe and stable operation of the station.

The invention discloses a battery monomer, a battery device and a power utilization device. The battery cell includes a housing, an electrode assembly, a first insulator, and a barrier. The shell is provided with a first wall, and the first wall is provided with a liquid injection hole. The electrode assembly is arranged in the shell. The first insulating part is arranged in the shell and located between the first wall and the electrode assembly, and the first insulating part is provided with a first through hole corresponding to the liquid injection hole in position; in the thickness direction of the first wall, the blocking piece is arranged on the side, facing the electrode assembly, of the first insulating piece, and the blocking piece is configured to at least partially shield the first through hole. The blocking piece is provided with a liquid outlet, the direction of the liquid outlet is perpendicular to the thickness direction of the first wall, the direction of the liquid outlet intersects with the first direction, and the first direction is parallel to the width direction of the first wall. According to the technical scheme provided by the invention, the reliability of the battery device can be effectively improved.

The wet spraying machine comprises a base, a storage box is arranged on the left side of the upper end of the base, a protective cover is arranged at the upper end of the storage box, a feeding pipe is arranged in a feeding port formed in the upper side of the front end of the storage box, a feeding valve is connected to the middle of the feeding pipe in series, and installation covers are arranged on the left side and the right side of the upper end of the storage box respectively. A first sprayer is arranged on the front side of the base, electric push rods are arranged at the four corners of the lower end of the base correspondingly, and supporting plates are arranged at the lower ends of the telescopic ends of the electric push rods correspondingly. The cleaning mechanism comprises a mounting rod, a transmission plate and a fixing rod, connecting pipes are slidably connected with sliding holes formed in the front side and the rear side of the upper end of the mounting cover correspondingly, and second spray heads are arranged at the lower ends of the four connecting pipes correspondingly. It is ensured that the interior of the anti-sticking wet spraying machine is unobstructed, and the spraying efficiency is improved.

The application discloses a secondary battery and an electric device, comprising: a shell, an electrode assembly, a top cover sheet, an insulating piece and a protruding piece, the top cover sheet is connected with the shell, and the top cover sheet is provided with a liquid injection hole; the insulating piece is connected with one side of the top cover sheet facing the electrode assembly; the protruding piece comprises an extension part and a blocking part, the extension part is connected with one side of the insulating piece away from the top cover sheet; the blocking part is connected with one side of the extension part away from the insulating piece, and the orthogonal projection of the blocking part on the top cover sheet covers at least part of the liquid injection hole; at least one flow guide hole is arranged on the extension part, and the flow guide hole is communicated with the liquid injection hole; the sum of the areas of the at least one flow guide hole is S1 mm 2 , the area of the liquid injection hole is S2 mm 2 , and the following condition is met: 1≤S1 / S2≤4. After the secondary battery meets the range of 1≤S1 / S2≤4, the strength of the protruding piece is improved, and the electrolyte injection efficiency is further improved, so that the production yield of the secondary battery is significantly increased.

The utility model discloses a kind of liquid injection mechanism of drop dyeing HE dyeing machine, including liquid injection mounting frame, liquid injection transverse shift module is equipped on the liquid injection mounting frame, lifting mounting plate is equipped on the output end of liquid injection transverse shift module, liquid injection lifting module and needle tube cleaning component are equipped on the lifting mounting plate, liquid injection needle is equipped on the output end of liquid injection lifting module, and one end of liquid injection needle is connected with liquid injection pump;Liquid injection transverse shift module is used to drive the liquid injection needle moves along the length direction of bunker, liquid injection lifting module can drive the liquid injection needle to extend into the material groove of bunker, the liquid injection needle is used to inject liquid medicine into material groove, liquid injection lifting module can also drive the liquid injection needle and the needle tube cleaning component are connected, and the needle tube cleaning component is used to clean liquid injection needle.The utility model can realize accurate positioning and automatic liquid injection of liquid injection needle, significantly improve liquid injection efficiency, reduce manual intervention, and be applicable to continuous batch operation.

The utility model relates to battery technical field especially relates to a battery top cover subassembly and battery monomer. The battery top cover subassembly includes top cover, buffer and check valve, and top cover is provided with liquid injection hole. Buffer sets up in the side of top cover to the direction of electric core. Along the axial direction of liquid injection hole, the projection of buffer and the projection of liquid injection hole at least partly overlap, and the circumferential side surface of buffer and the inner wall surface of liquid injection hole form liquid injection runner. Check valve sets up between buffer and liquid injection hole, and check valve communicates with liquid injection runner to make the one-way flow of electrolyte in liquid injection runner. The battery monomer includes above -mentioned battery top cover subassembly, and the buffer effect of electrolyte is played to buffer and direct action through buffer, avoids the direct impact of electrolyte to electric core, to avoid the diaphragm of electric core top to take place and turn over and lead to short circuit. Meanwhile, electrolyte disperses and flows along liquid injection runner, and the liquid injection efficiency is improved. In addition, check valve makes the one-way flow of electrolyte in liquid injection runner, and avoids the overflow.

The invention provides a gallium nitride-based semiconductor laser with a gradient radiation recombination coefficient waveguide layer, which is characterized in that a lower waveguide layer and an upper waveguide layer are respectively a gradient radiation recombination coefficient lower waveguide layer and a gradient radiation recombination coefficient upper waveguide layer; and a fitting curve of In ion strength distribution or In atom concentration distribution and a fitting curve of radiation recombination coefficient distribution of the waveguide layer on the gradient radiation recombination coefficient both meet any function distribution of GaussAmp, InvsPoly and Hill in an SIMS test. A fitting curve of In ion strength distribution or In atom concentration distribution and a fitting curve of radiation recombination coefficient distribution of the waveguide layer under the gradient radiation recombination coefficient both meet BiDoseResp function distribution in an SIMS test. According to the invention, carriers, quantum recombination and a light field are efficiently localized, the laser gain is improved, the carriers and the light field are efficiently localized in an active layer (quantum well), meanwhile, non-radiative recombination and absorption loss of a waveguide region are inhibited, and the threshold current, slope efficiency and reliability are further improved.

The invention discloses a floating interactive intelligent display chip based on dynamic distance sensing and a preparation process, and relates to the field of integrated chip preparation, the floating interactive intelligent display chip comprises a substrate layer, a buffer layer, an intrinsic layer, a multi-quantum well layer, a barrier layer, a source electrode, a grid electrode, a p-GaN layer, an anode and a drain electrode, the buffer layer, the intrinsic layer, the multi-quantum well layer and the barrier layer are sequentially arranged on the substrate layer, and the source electrode, the grid electrode, the p-GaN layer, the anode and the drain electrode are sequentially arranged on the substrate layer. The source electrode is arranged on one side of the upper surface of the barrier layer, the grid electrode is arranged in the middle of the upper surface of the barrier layer, the p-GaN layer is arranged on the other side of the upper surface of the barrier layer, and the anode and the drain electrode are sequentially arranged above the p-GaN layer. An InGaN / GaN multi-quantum well structure is embedded into a p-GaN HEMT epitaxial layer structure to form a light-emitting HEMT structure, and a driving transistor, a light source and a photoelectric detector are subjected to monolithic integration, so that a floating interactive intelligent display chip with an epitaxial integrated structural characteristic is realized.

The invention provides an arylamine derivative and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. The invention aims to solve the technical problems of low luminous efficiency and short service life of an organic electroluminescent device caused by low mobility of a current hole transport material and low refractive index of a covering layer material. The compound provided by the invention has high hole mobility and refractive index, good thermal stability and good film-forming property, and can significantly improve the luminous efficiency and service life of a device, optimize the light extraction effect and block impurities. The organic light-emitting device can be widely applied to the fields of panel display, illumination light sources, flexible OLEDs, electronic paper, organic solar cells, organic photoreceptors or organic thin film transistors, indication boards, signal lamps and the like.

The application provides a semiconductor laser element, which comprises, from bottom to top, a substrate, a lower confinement layer, a lower waveguide layer, an active layer, an upper waveguide layer, an electron blocking layer and an upper confinement layer; a topological Dirac electron point layer is arranged between the upper waveguide layer and the electron blocking layer, and a topological Dirac electron point layer is arranged between the electron blocking layer and the upper confinement layer; the active layer is a periodic structure composed of a well layer and a barrier layer, and the number of periods is 3 >= m >= 1; the well layer is any one or any combination of InGaN, InN, AlInN and GaN, and the thickness is 10-80 angstrom meters; and the barrier layer is any one or any combination of GaN, AlGaN, AlInGaN, AlN and AlInN, and the thickness is 10-120 angstrom meters. The semiconductor laser element provided by the application can generate non-local effects between electrons and electrons through the cage lattice structure of the arranged topological Dirac electron point layer, and can inhibit the charge density wave and the quantum limited Stark effect.

This application relates to the field of battery production equipment technology, and discloses a battery electrolyte injection fixture and a battery production line. The battery electrolyte injection fixture includes a driving device, a first clamping part, and a second clamping part. The driving device is drivenly connected to the first and second clamping parts. The first clamping part has a first clamping surface, and the second clamping part has a second clamping surface. The first and second clamping surfaces are disposed opposite to each other. The first clamping surface is a curved surface convex towards the second clamping surface. When the driving device drives the first and second clamping parts to clamp the battery cell, the battery cell has a first sidewall and a second sidewall along a first direction. The first clamping surface corresponds to the first sidewall, and the second clamping surface corresponds to the second sidewall. At least a portion of the first sidewall is intermittently abutted by the corresponding portion of the first clamping surface. The purpose of this technical solution is to improve the uniformity of electrolyte wetting inside the battery cell, shorten the wetting time, and improve the overall battery performance.

The utility model discloses a liquid injection device, and relates to the technical field of battery production. The liquid injection device is used for injecting liquid into the battery cell and comprises a liquid storage cup, a liquid injection piece and an atomization mechanism; the liquid storage cup is used for supplying electrolyte; the liquid injection part is at least partially inserted into the battery cell; the atomizing mechanism is arranged between the liquid storage cup and the liquid injection part, and the atomizing mechanism is used for atomizing the electrolyte flowing through the atomizing mechanism, so that the atomized electrolyte is injected into the battery cell through the liquid injection part. Therefore, after the electrolyte is atomized by the atomizing mechanism, the electrolyte injected into the battery cell is in a tiny liquid drop shape, so that the interior of the battery cell can be fully infiltrated in the liquid injection stage; compared with the prior art, high-temperature standing is not needed, the total time of liquid injection is saved, the liquid injection efficiency is improved, and the infiltration effect of the electrolyte is also improved.

The utility model discloses a kind of soft package battery liquid injection packaging devices, comprising: transport component, transport component includes fixed frame and track, fixed frame and track stretch along first direction;Liquid injection component, liquid injection component is set on track upside, liquid injection component is fixed on fixed frame, liquid injection component includes liquid injection valve and first drive cylinder, and first drive cylinder drives liquid injection valve to move along second direction;Packaging component, several packaging components are set on track upside, and packaging component includes second drive cylinder and press-fit plate, and second drive cylinder is connected press-fit plate, and second drive cylinder drives press-fit plate to move along second direction;By setting liquid injection component and packaging component in same device, it is favorable to improve the efficiency of battery liquid injection and packaging, simultaneously by loading multiple packaging components, it is favorable to carry out packaging processing together after the liquid injection of multiple soft package batteries, to improve the production efficiency of soft package battery.

The invention belongs to the technical field of flexible electronic materials, and particularly relates to a multi-layer composite transparent electrode for a flexible substrate and a preparation method of the multi-layer composite transparent electrode. The electrode sequentially comprises a stress buffer layer, a transparent core layer and an interface optimization layer from the surface of the flexible substrate; the stress buffer layer is zinc oxide-tin oxide composite nanoparticles grafted with a silane coupling agent; the transparent core layer is a silver nanowire network of which the surface is coated with a tin-doped indium oxide shell layer; and the interface optimization layer is a molybdenum oxide and tungsten oxide blended film formed by controlling oxygen partial pressure. Through combination of multilayer material design and a low-temperature preparation process, the electrode has the characteristics of high light transmittance, low sheet resistance, excellent bending resistance, strong interface adhesion and high work function, and is suitable for flexible display and wearable electronic devices.

The application discloses a kind of multispectral nanocluster doped multiple coating light concentrator and its method, including preparation substrate layer, preparation light emitting layer and preparation anti-reflection function layer, multispectral nanocluster doped light emitting layer is coated on substrate layer, anti-reflection function layer is coated on light emitting layer, the multispectral nanocluster is using Eu 3+ 、Tb 3+ 、Ce 3+ Ion or any combination thereof induced nanocluster of agglomerated polymer formation, the light emitting layer is obtained using multispectral nanocluster doped resin, for the absorption of incident short-wave light and conversion into characteristic emission light;The anti-reflection function layer is coupled to the outermost layer of light emitting coating, for limiting the light quantum conduction in coating, using different refractive index coating to limit the light quantum conduction in coating, to lock the fluorescent light quantum escape emitted by inner layer light emitting material, while, also can play the role of reducing interface reflection loss and improving the injection efficiency of incident light to light emitting layer.

This invention relates to the field of optoelectronic manufacturing technology, specifically disclosing a Micro-LED chip and its fabrication method. The fabrication method includes: forming an epitaxial layer on a substrate; forming conductive steps and isolation trenches on the epitaxial layer to obtain a first intermediate; immersing the first intermediate in a modified solution containing a silane coupling agent and reacting for a first preset time to obtain a second intermediate; the silane coupling agent contains a first active group and a second active group, the first active group being methoxy or ethoxy, and the second active group being amino; heat-treating the second intermediate in an inert atmosphere for a second preset time to obtain a third intermediate; forming a protective layer on the third intermediate; the protective layer's E... g ≥4.0 eV; A first through-hole and a second through-hole are formed on the protective layer to obtain a fourth intermediate; A first electrode and a second electrode are formed on the fourth intermediate. Implementing this invention can improve the luminous efficiency and reliability of Micro-LED chips.

The invention discloses a mass spectrometer and a sealing and transferring integrated device thereof, and the device comprises a lifting mechanism corresponding to a sample introduction port of a sample introduction chamber, and the lifting mechanism carries a separable chip carrier used for containing a detection chip; the translation device is loaded on the main vacuum chamber and comprises a material loading platform which is assembled on the main vacuum chamber in a sliding manner, a supporting stand column group which is fixed on one side of the material loading platform, and a sample injection driving mechanism which is used for driving the material loading platform to move between an analysis position and a lifting mechanism in a reciprocating manner; the bottom of the chip carrier is provided with a locking position used for being in butt joint with the supporting stand column set. The whole sample injection process is simpler and more convenient, the actions of sample injection and seal cancelling are synchronously carried out, the sample injection efficiency is greatly improved, meanwhile, the lifting mechanism is directly pushed to do lifting action through the driving part, independent driving control of the lifting mechanism is omitted, and the control complexity is reduced.

The application discloses a kind of high density low rebound shotcrete and preparation method thereof, it is related to shotcrete field, and preparation method includes: (1), respectively to cementitious material, fine aggregate, coarse aggregate is using MAA model to be packed and the design ratio of each raw material in interior is obtained;(2), cementitious material, fine aggregate, coarse aggregate and the rebounding agent of design ratio obtained according to step (1) are fully mixed, water, water reducing agent is mixed, then by the way of mixing with pressurized air, incorporate accelerator, obtain high density low rebound shotcrete.The application uses early strength rebounding agent, improves the pumpability of shotcrete, accelerates the early hydration of concrete, under the joint action of alkali-free accelerator, rapidly improves the early mechanical properties of shotcrete, improves shotcrete construction efficiency.Multiple close packing is used, and cementitious material, fine aggregate, coarse aggregate respectively form close packing structure, effectively improve the plastic viscosity of paste and the compactness of concrete.

The application relates to the technical field of batteries, in particular to a battery cell cover plate and a battery cell. The battery cell cover plate comprises: a liquid injection hole arranged on a cover plate main body; a first insulating piece with a first cavity and a second cavity arranged at intervals along the thickness direction of the cover plate main body; the opening of the first cavity faces the cover plate main body, the opening of the second cavity faces away from the cover plate main body, the cavity bottom of the second cavity is provided with a first through part in communication with the first cavity, and the side wall of the second cavity is provided with a second through part in communication with a pole group; a sealing cover piece is connected with the first insulating piece, the sealing cover piece seals the opening of the second cavity and can abut against the pole group, the application realizes smooth inflow of electrolyte, improves the stability of the battery cell in the process of high-temperature baking and pre-charging, the sealing cover can increase the contact area of the battery cell cover plate and the pole group, the pole group is more safe and stable in the battery cell and is not prone to shaking, and therefore the performance and safety performance of the battery cell are ensured.

The invention discloses a two-region InSb-based quantum dot Mirco-LED capable of efficiently emitting near-infrared and a preparation method thereof.The preparation method comprises the steps that firstly, a pixelated pattern is formed on a transparent conductive substrate through photoetching and wet etching, and then functional layers such as a hole injection layer, a hole transmission auxiliary layer, an InSb quantum dot light-emitting layer and an electron transmission layer are prepared in sequence; and finally, manufacturing the device through vacuum evaporation of an electrode and ultraviolet curing packaging. According to the invention, an environment-friendly and nontoxic InSb quantum dot material is adopted, efficient emission of a wave band of 1000-1700nm is realized through a pixelated structural design and a multi-layer spin-coating process, and meanwhile, the device has excellent miniaturization integration level and long-term stability; the technical problem that a traditional near-infrared light-emitting device is difficult to consider the aspects of wavelength range, environmental friendliness and integration level is effectively solved.

The application discloses a device and method for microneedle patch injection and peeling, and relates to the technical field of microneedle patch application devices, which comprises a shell, a sliding groove is arranged on the side wall of the shell; an injection mechanism is arranged in the shell and comprises a hollow spring push rod, a spring guide rod is arranged on the top of the spring push rod, the spring guide rod is fixed on the top of the shell, and the spring guide rod is sleeved with a spring on the side of the top of the spring push rod; a clamping mechanism is fixed on the bottom of the spring push rod and comprises a sliding rail, a pair of clamping blocks are symmetrically arranged on the sliding rail, the clamping blocks are connected with an adjusting mechanism to realize the approaching or moving away of the clamping blocks, the sliding rail penetrates through the sliding groove and is connected with a pusher, the clamping mechanism is compressed and locked through the pusher, the pusher is released, and the microneedle patch in the clamping block is pushed through the action of the spring; the device can uniformly penetrate the drug-loaded tip of the microneedle patch into the skin through external force and peel the microneedle patch or the base of the microneedle patch from the surface of the skin.

The application provides a GaN-based light-emitting diode epitaxial structure and a preparation method thereof, wherein a Zn source is introduced as a surface activator during the growth of a P-type AlGaN electron blocking layer, a P-type AlGaN electron blocking layer structure with a gradient distribution of Zn concentration along the direction of the P-type AlGaN electron blocking layer is constructed, and specifically, through the core role of the Zn surface activator and the innovative design of the gradient distribution of the Zn concentration, the valence band Ev is smoothly and non-peaked along the whole process, and the hole injection is smooth along the whole process under the premise of ensuring that the conduction band Ec is smoothly and non-peaked and the strong electron blocking capability is not lost.

The invention relates to a wax mould injection device, which belongs to the technical field of mould injection and comprises a fixed mould mechanism and movable mould mechanisms arranged on two sides of the fixed mould mechanism, and the movable mould mechanisms on two sides move towards the fixed mould mechanism and inject wax moulds on two sides of the fixed mould mechanism. The fixed mold mechanism comprises a first fixed mold plate, core pulling mechanisms installed on the two sides of the first fixed mold plate, a driving mechanism driving the core pulling mechanisms to move and a demolding mechanism arranged in the first fixed mold plate and used for demolding an injected wax mold. The core-pulling mechanism comprises a first core-pulling assembly installed in the first fixed mold plate, a second core-pulling assembly installed on the other side of the first fixed mold plate and a linkage assembly connected with the first core-pulling assembly and the second core-pulling assembly. The wax mold injection device achieves the technical effects that the wax mold injection efficiency is improved, core pulling and demolding operation is accurately achieved, and the wax mold forming quality is guaranteed.

The invention relates to the technical field of batteries, in particular to a battery cell cover plate and a battery cell. The battery cell cover plate comprises a cover plate main body provided with a liquid injection hole; the first insulating part is arranged in the battery cell, a first concave accommodating cavity is formed in one side, facing the cover plate main body, of the first insulating part, and the liquid injection hole is covered by the projection of the first accommodating cavity on the cover plate main body; the side, facing the interior of the battery cell, of the first insulating part is provided with a boss abutting against the pole group, the boss is provided with a drainage channel communicating with the first containing cavity and the pole group, at least part of the flowing path of fluid in the drainage channel forms an angle with the axial direction of the liquid injection hole, and the penetrating part is formed in the side wall of the boss and communicates with the drainage channel. According to the invention, the condition that the diaphragm in the pole group blocks the drainage channel when liquid injection or exhaust is carried out through the liquid injection hole can be improved, so that the electrolyte flows in smoothly, the electrolyte injection efficiency is improved, the liquid injection time is shortened, the risk of electrolyte overflow is reduced, and the stability of exhausting gas through the liquid injection hole in time is improved.

This invention provides an automated sample loading method for a side-insertion sample stage in electron microscopy, belonging to the field of automated loading and intelligent control technology for transmission electron microscopy. After coaxially aligning the sample rod and the injection port, a first, second, and third advance are sequentially performed. When a preset first-stage limit condition is met after the first advance, the vacuum state is checked; if it is, a second advance is performed. When a preset second-stage limit condition is met after the second advance, a stable connection is determined; if stable connection is achieved, a third advance is performed. When a preset third-stage limit condition is met after the third advance, the sample loading is complete. This method decomposes the sample loading process into multi-stage advances, using axial contact force, torque, and preset target positions for each stage to determine the state, achieving step-by-step sample loading control. Simultaneously, vacuum state monitoring is used to evaluate the connectivity of the transmission channel, thereby dynamically adjusting the sample loading accuracy and significantly improving sample loading efficiency while ensuring reliability.

The utility model relates to medical equipment field, concretely discloses a multi -head needleless injector of even rate of fire, including injector body, injection head and liquid supply mechanism, the injector body is separated into main liquid cavity and liquid outlet cavity through the partition board in, main liquid cavity is equipped with liquid drive plug, is equipped with one -way shunt disc in the liquid outlet cavity, one -way shunt disc back is equipped with first plugging structure, the liquid supply mechanism is equipped with second plugging mechanism in, one -way shunt disc is equipped with guide post, injection head is equipped with guide slot, second plugging mechanism includes ball, second spring and cambered surface seat, cambered surface seat has first clamping ring and quick -joint part, cambered surface seat outside still is equipped with spinning pressure spare, spinning pressure spare has second clamping ring, adopt the utility model, can guarantee the speed uniformity of every injection nozzle spouts liquid medicine, drop size is even, improves the efficiency of needleless injection and guarantees injection stability.

The application provides a triarylamine compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials.The triarylamine compound has good thermal stability, high hole mobility and a suitable HOMO energy level, and is used as a hole transport material in the organic electroluminescent device, which can effectively reduce the hole transport resistance, improve the injection and transport efficiency of holes in the device, make the efficient recombination of electrons and holes in the light-emitting layer, effectively reduce the driving voltage of the device, improve the light-emitting efficiency of the device, reduce the movement of excitons to the outside of the light-emitting layer, avoid interface light emission, reduce the loss of the device, and prolong the service life of the device.The triarylamine compound can be applied to the fields of display, illumination and organic solar cells.

This utility model discloses a clamping and sealing device, relating to the field of microfluidic chip injection technology. The clamping and sealing device includes: a frame; a placement seat mounted on the frame, having a placement position for placing the microfluidic chip; and an opening and closing module mounted on the frame, comprising a driving component and an opening and closing component. The opening and closing component has a first position and a second position relative to the placement position. The driving component can drive the opening and closing component to reciprocate between the first and second positions. When the opening and closing component is in the first position, it presses against the irregularly shaped structure to block and close the first channel. When in the second position, the opening and closing component moves away from the irregularly shaped structure to allow the first channel to open. The technical solution provided by this utility model can solve the problem of inconvenient and rapid injection of microfluidic chips in existing systems.

The invention discloses a gallium nitride device and a preparation method thereof, and relates to the technical field of semiconductor devices. The gallium nitride device comprises a sapphire substrate, an AlN nucleating layer, an N-type AlGaN buffer layer, an intrinsic AlGaN active layer, an electron blocking layer and a P-type AlGaN layer which are sequentially stacked from bottom to top, a gradient doping edge stop layer is arranged on the edge of the P-type AlGaN layer, and meanwhile a bottom electrode in ohmic contact with the N-type AlGaN buffer layer and a top electrode in ohmic contact with the P-type AlGaN layer are formed respectively. According to the invention, by optimizing the structural design of the substrate, the nucleating layer, the buffer layer, the active layer, the electron blocking layer, the edge termination layer and the electrode, and combining with the seagull optimization algorithm to accurately regulate and control the preparation process parameters, the comprehensive improvement of the light extraction efficiency, the carrier recombination efficiency, the breakdown voltage and the long-term working stability is realized; and the photoelectric property and the reliability of the gallium nitride device are obviously enhanced.