32results about How to "Guaranteed mechanical stability" patented technology

The invention relates to the technical field of terahertz, in particular to a terahertz sensor array design optimization method based on metasurface enhancement, which improves the performance of the terahertz sensor array in the aspects of sensitivity, resolution, frequency response and the like through multi-dimensional optimization design, obtains initial parameters of the array based on a physical model, and improves the accuracy of the design of the terahertz sensor array. By optimizing the structure and the arrangement mode of the metasurface unit and combining electromagnetic simulation analysis, the transmission efficiency and the phase regulation and control capability of terahertz waves are improved, the performance change of the sensor under high-temperature and high-stress conditions is evaluated through thermal effect and stress field simulation, the stability and the reliability of the sensor in a complex environment are ensured, and the application range of the sensor is widened. Based on laboratory testing, data of key performance indexes such as sensitivity, resolution and response time are fed back, design parameters are adjusted, and iterative optimization is completed; according to the invention, through combination of multi-dimensional simulation and experimental feedback, the performance and environmental adaptability of the terahertz sensor array are significantly improved, and the terahertz sensor array is suitable for wide terahertz detection application.

The invention discloses a low-voltage circuit cable convenient and quick to connect, which relates to the technical field of low-voltage cables, and comprises a first low-voltage circuit cable body which is arranged at the left side end of an outer protection connecting end, forms circuit connection with a second low-voltage circuit cable body through the outer protection connecting end, and is used for forming a complete closed electrical circuit, under the cooperation of the magnetic connection end and the magnetic fixing end, the whole cable butt joint operation is realized, the connection process is greatly simplified, the skill requirement on operators is reduced, the mechanical stability in the connection process is ensured, the cable is prevented from being accidentally broken, the stability of internal electrical connection is also ensured, and the service life of the cable is prolonged. According to the low-voltage circuit cable connection system, the power or signal transmission is ensured not to be interfered, the viability of the whole low-voltage circuit cable connection system in a severe environment is improved, the electrical performance of cable connection is improved under the cooperation of the distance adjusting control assembly, and the potential safety hazards of heating, electric energy loss and the like caused by the increase of contact resistance are reduced.

The invention relates to the field of electronic and electrical connection, and discloses a manufacturing method of a wire with a terminal, which comprises the following steps: S1, preparing a conductive adhesive: mixing epoxy resin, silver powder, copper nanoparticles, carbon nanotubes, a curing agent, a toughening agent, a dispersing agent and a defoaming agent according to a ratio to obtain the conductive adhesive; the conductive adhesive is obtained through premixing, nano-particle dispersion, step-by-step addition of silver powder, defoaming treatment, addition of a flexibilizer and secondary dispersion. S2, peeling, cleaning, coarsening and activating the wire and the terminal; s3, coating a conductive adhesive on a connection area of the conductor of the electric wire and the terminal; s4, inserting the wire into the terminal, and applying pressure for bonding; and S5, after the connecting piece is preliminarily cured, the connecting piece is completely cured. Efficient connection between the wire and the terminal is achieved through the conductive adhesive, mechanical damage caused by traditional crimping is avoided, the conductivity and mechanical strength are improved, adaptability is high, and reliable electrical connection can be provided in a severe environment.

The invention provides a design and manufacturing method of a medium-long wave infrared anti-reflection microstructure window, and relates to the technical field of infrared window processing and application. The method specifically comprises the following steps: performing simulation design on a medium-long wave infrared anti-reflection microstructure according to material characteristics and application requirements of a window substrate, and determining key dimension parameters to be processed; an outer surface anti-reflection microstructure and an inner surface anti-reflection microstructure are machined on the surfaces of the two sides of the window substrate respectively through multi-pulse femtosecond laser Bessel beams. The method has wide adaptability and flexibility, and efficient design and high-quality manufacturing of the anti-reflection microstructure on the surface of any window material can be achieved. The problem that an existing window material is low in medium-wave and long-wave infrared transmittance is solved, meanwhile, the window material has good structural durability and environmental adaptability, and the strict performance requirement of a common-caliber infrared dual-waveband imaging technology for an infrared window is met.

The invention provides a preparation method of a PEM water electrolysis anode diffusion layer, which relates to the field of PEM water electrolysis. Titanium nanotubes with different pore sizes are selected, and the large-pore titanium nanotubes are used to transmit liquids, and the small-pore titanium nanotubes are used to transmit gases, so that the gas and liquid transmission in the PEM water electrolysis process is highly ordered, and good liquid and gas management functions are achieved; the surfaces of the titanium nanotubes and titanium powders are attached with noble metal ions, and then oxygen is introduced for calcination, so that the noble metal ions form an oxide grid structure and are attached and embedded in the surfaces of the titanium nanotubes and titanium powders, which has higher firmness, protects the titanium material from being oxidized in the water electrolysis process, and improves the conductivity and catalytic ability of the anode diffusion layer.

The present invention belongs to the field of nuclear physics and nuclear technology application, in particular to a large curved thin-walled neutron beam window for a high-resolution neutron diffractometer in spallation neutron source technology and a manufacturing method thereof; the neutron beam window is designed as an integrated curved structure, the thickness of the beam window is designed to be 1.5 mm, and a transverse rib is provided in the middle of the neutron beam window to enhance structural stability without affecting neutron penetration; the present invention is designed as a thin-walled curved structure, so that the neutron beam window can more effectively penetrate neutrons, reduce neutron attenuation during transmission, thereby improving neutron utilization and accuracy of experimental data; at the same time, compared with a traditional planar structure, the curved surface design has better stress distribution, can effectively reduce stress concentration and mechanical deformation, improve the pressure bearing capacity and fatigue life of the neutron beam window, and ensure safe and stable operation of the experimental device.

The present application belongs to the technical field of polyurethane / polyurea, and discloses a stress change material and a preparation method thereof. The stress change material comprises hydrophobic segments and hydrophilic segments. The stress change material can change in size in two ways under water stimulation: one is to absorb a large amount of water to induce rearrangement of the hydrophilic segments, so as to realize volume expansion; the other is to absorb a small amount of water as a plasticizer to promote the movement of the segments, so as to realize shape recovery. Meanwhile, due to the introduction of the hydrophobic segments, the polyurethane / polyurea can still maintain sufficient mechanical strength in a water environment, thereby widening the application range of the material.

This invention relates to the field of silicon carbide crystal preparation technology, and discloses a crucible for growing high-purity semi-insulating silicon carbide crystals, comprising an inner liner layer, a transition layer, and an outer support layer sequentially composited from the inside out. The inner liner layer of the crucible adopts a composite structure of high-purity tantalum carbide matrix and rare earth oxides. Under high-temperature crystal growth environment, rare earth elements form a continuous segregation layer through grain boundary diffusion behavior, passivating active sites at grain boundaries and preventing oxygen impurities from penetrating inward. At the same time, the gradient material design of the transition layer achieves progressive matching of the coefficient of thermal expansion, fully absorbing the interfacial stress during thermal cycling and avoiding the risk of interlayer delamination, thereby ensuring the high stability and long service life of the semi-insulating properties of silicon carbide crystals. The microgroove array structure set on the outer surface of the inner liner layer is treated with pyrolytic carbon coating to construct a regular gaseous material transport path, reducing the tendency of polymorphic phase transitions at the crystal growth interface, thereby obtaining a highly uniform, inclusion-free silicon carbide single crystal structure.

The application provides a monolithic adsorbent based on 3D printing technology. The application selects halloysite nanotubes and hydroxypropyl methyl cellulose as binders. The halloysite nanotubes have excellent high-temperature resistance, hardness and durability, and chemical stability, and can meet the application requirements of the catalyst under high-temperature complex working conditions, so that the catalyst structure remains mechanical stability. The hydroxypropyl methyl cellulose has processability and plasticity, and can help to print complex shapes and structures. The super strong bonding force and interlayer adhesion can effectively bond the printing materials, ensure the firmness and stability of the interlayer adhesion in the printing process, and help to reduce the distortion and deformation in the printing process. The monolithic passive NO x adsorbent provided by the application has a simple and feasible preparation method, is a non-noble metal adsorbent with economic benefits, and can be connected in series with a downstream SCR treatment unit to realize ultra-low emission in the NOx cold start stage.

The invention discloses an optical fiber cable, a preparation method and an extrusion cladding machine for preparing the optical fiber cable, the optical fiber cable comprises an optical unit, a sheath layer and an outer coating aluminum layer which are sequentially arranged from inside to outside, and the outer coating aluminum layer is formed by cladding aluminum on the surface of the sheath layer through an extrusion cladding process. During preparation, firstly, the optical unit is provided, then the aluminum-clad steel wire stranded layer can be additionally arranged between the optical unit and the sheath layer as required, then the sheath layer is prepared, and finally, the surface of the sheath layer is coated with aluminum by using an extrusion coating process to form the outer coating aluminum layer, so that the optical fiber cable is obtained. And the extrusion cladding machine is used for preparing an aluminum-clad steel wire or preparing an outer coating aluminum layer on the surface of the sheath layer. The invention also discloses an optical fiber cable preparation method and an extrusion coating machine for optical fiber cable preparation. The mechanical performance and the corrosion resistance of the optical cable are improved, the service life of the optical cable is prolonged, the production cost is reduced, and the product competitiveness is improved.

The utility model provides a silicon carbide single crystal growth device, which is characterized in that a crucible structure comprises a lower crucible and an upper crucible with openings opposite to each other, and the upper crucible and the lower crucible are in sliding connection through a side wall; on one hand, the growth space between the upper crucible and the lower crucible can be fully utilized, the crystal growth thickness is further improved, and the combination between the upper crucible and the lower crucible is more beneficial to the stability of the growth space; on the other hand, the upper crucible and the lower crucible are in sliding connection through the side walls, the distance between a silicon carbide single crystal growth interface and a silicon carbide powder interface can be kept through dynamic stretching to control dynamic balance of the axial temperature gradient, stability of the growth interface in the growth process is kept, and dislocation and other defects are reduced.

The invention relates to the technical field of optical communication, in particular to an optical fiber beam splitter packaging structure and a VCSEL comprising the same. The optical fiber beam splitter packaging structure comprises an optical fiber beam splitter body, a buffer layer, a heat conduction layer and a rigid layer, the buffer layer wraps the optical fiber beam splitter body, the heat conduction layer wraps the buffer layer, and the rigid layer wraps the heat conduction layer. The buffer layer absorbs mechanical stress, absorbs shock, prevents impact, and protects the optical fiber beam splitter body from being damaged by external mechanical force; the heat conduction layer is used for heat dissipation, and it is ensured that the optical fiber beam splitter body can effectively conduct out heat in a high-power or high-temperature environment. The rigid layer improves the physical strength, prevents external impact, extrusion or wear, and ensures the mechanical stability and durability of the whole packaging structure. Starting from the two aspects of mechanics and thermotics, the optical fiber beam splitter packaging structure is optimized, so that the optical fiber beam splitter body generates a stable beam splitting ratio, finally, the VCSEL generates stable output, and the VCSEL has a good application prospect in the technical field of optical communication.

The application provides a quantum storage device, a preparation method and a quantum device, and relates to the technical field of quantum storage devices. The quantum storage device comprises a substrate, a superconducting circuit, at least two support parts, at least two diffusion regions and a superconducting mechanical oscillator. The at least two support parts are arranged vertically on a first surface. The at least two diffusion regions are arranged one by one with the support parts. The at least two diffusion regions are connected with the superconducting mechanical oscillator, so that the superconducting mechanical oscillator is arranged in suspension on the first surface. The superconducting mechanical oscillator comprises a suspension part and at least two cantilever beams, and the cantilever beams are arranged one by one with the diffusion regions. The direction of each cantilever beam is different, so that the at least two cantilever beams jointly form a first branch structure, and the first branch structure is used for reducing the dissipation of vibration energy of the suspension part for the first time based on a dissipative dilution mechanism. The application can guarantee the mechanical stability of the superconducting mechanical oscillator and the preparation yield, and can reduce mechanical loss and improve the quality factor.

The utility model provides a laser crystal fixing structure for staggered pumping. The laser crystal fixing structure comprises a substrate, at least one pair of positioning seats and a laser crystal, the two positioning seats are symmetrically arranged on the top face of the base plate in an integrally-formed mode and arranged in the length extending direction of the base plate in a staggered mode. Wherein a first connecting layer is arranged on one positioning seat, a first connecting groove is defined by the first connecting layer, a second connecting layer is arranged on the other positioning seat, and a second connecting groove corresponding to the first connecting groove is defined by the second connecting layer; and the laser crystal is arranged in the first connecting groove and the second connecting groove. According to the structure, integrated design and machining forming are achieved, the structure is simple, reliable, easy to assemble and suitable for batch production, related technical indexes of the positioning base and the mounting face matched with the laser crystal are effectively guaranteed, and stress-free fixing of the laser crystal and the positioning base is achieved through matching of the connecting layer and a tool.

The utility model discloses a gripper mechanism which comprises a fixing support, a hanging belt, grippers, a reel, a motor and a linkage mechanism. The fixed bracket can be fixed at a high position; the reel is rotatably arranged in an inner cavity of the fixing support, and one end of the reel penetrates through the fixing support. The motor is fixedly arranged on the side face of the fixing support, and the conveying end of the motor is connected with the end, extending out of the fixing support, of the reel. One end of the sling is wound on the outer wall of the reel; the gripper is fixedly arranged at the other end of the hanging belt; the linkage mechanism is arranged between the fixing support and the gripper and used for achieving stable lifting of the gripper. By means of an advanced gear linkage mechanism, high-precision control over synchronous operation of the double grabbing arms is achieved. In addition, the vertical operation is more accurate by comprehensively utilizing the actions of the hanging belt and the electric reel, and the adaptability to objects with different sizes and shapes is greatly improved.

The application belongs to the technical field of electrical components, and particularly relates to an equipment for connecting electrical conductors, especially to an optical fiber connector shell assembling equipment and an assembling process thereof; wherein one kind of optical fiber connector shell assembling equipment comprises: a driving piece which is rotationally arranged in the working position and has a limiting groove in the middle part for limiting a ceramic ferrule; a positioning sheet which is liftably arranged on the outer wall of the driving piece and is linked with the driving piece; and at least two limiting plates which are slidingly arranged on the side wall of the positioning sheet and are used for limiting springs; wherein, after the ceramic ferrule is placed in the limiting groove, the spring manipulator sets the spring on the outer wall of the ceramic ferrule from top to bottom; the driving piece drives the positioning sheet to move downward, and the limiting plate extrudes the spring to compress, so as to expose the ceramic ferrule; the plastic upper shell is set on the outer wall of the ceramic ferrule from top to bottom, and the plastic upper shell pushes the limiting plate to shrink into the positioning sheet, so that the compressed spring is reset upward to be inserted into the plastic upper shell.

The application discloses an anti-interference high-voltage cable detection device, which comprises a cable detection device body, and the inner part of the cable detection device body is respectively provided with a self-adaptive stabilizing mechanism, an automatic alignment mechanism and a controller; the self-adaptive stabilizing mechanism is arranged, linkage between a gear, a rack, a transmission shaft and an eccentric wheel is utilized, self-adaptive clamping of cables with different diameters is realized, compared with a traditional fixed clamping or elastic clamping structure, the problem of limited clamping range and unstable clamping is effectively solved, the reliability of clamping is ensured, damage to the cable is avoided, the contact state is detected in real time by a contact sensor and feedback control is performed, the clamping strength can be dynamically adjusted, and therefore the stability and safety of the overall structure are improved.

The utility model relates to the technical field of the repair and balance of aircraft APU, disclose a gear box oil separation gear balance fixture, including horizontal mechanism and setting at its top balance mechanism, both are connected through the lock catch, be equipped with battery main part and drive motor in horizontal mechanism, through the drive limit wheel and horizontal board bottom's rack structure meshing, drive horizontal board and balance mechanism to carry out automatic horizontal angle adjustment, and balance mechanism provides support through the rotation of connecting rod, utilize the clamping assembly fixed with the fixture mandrel of nut and is measured gear, and realizes axial locking through the cooperation of positioning rod and rotating rod. The utility model solves the problem that the existing dynamic balance measuring equipment relies on horizontal environment and the difficult problem of special-shaped gear clamping, can actively adapt to the non-horizontal operation environment, ensure that the balance mechanism is in the best measurement posture, and effectively eliminate the interference of the tool itself unbalance, significantly improve the precision and flexibility of dynamic balance measurement.

The invention provides an MOF (Metal Organic Framework) composite catalytic material for removing VOCs (Volatile Organic Compounds) as well as a preparation method and application thereof. According to the MOF composite catalytic material for removing VOCs, modified cellulose is used as a three-dimensional structure carrier, MOF and a metal catalyst are firmly loaded in a cellulose network through an in-situ growth process, and a macroscopic composite catalytic material with hierarchical pores, high specific surface area and good mechanical stability is formed; the composite material shows excellent catalytic efficiency, cycling stability and recoverability in the fields of catalytic degradation of VOCs, air purification and the like, and has a good application prospect. The invention also provides a preparation method and application of the MOF composite catalytic material for removing VOCs.

The utility model relates to the technical field of beam strander equipment, in particular to a modularized adjustable stranding mechanism of a beam strander, which comprises a hollow main shaft. Power equipment for controlling the hollow main shaft to rotate is installed on the hollow main shaft, the hollow main shaft is connected with an annular support through spokes arranged at the end of the hollow main shaft, an annular groove is formed in the middle of the outer side face of the annular support, annular bosses are arranged on the edges of the left side and the right side of the annular support, and positioning holes are annularly and evenly distributed in the annular bosses; through the split type modular design, such as the slidable arc-shaped sliding block, the annular boss with the positioning hole and the detachable wire harness mounting frame, rapid adjustment of stranding parameters is achieved, an operator can complete stepless adjustment of the pitch and the stranding angle only by inserting a stud with a head into the positioning hole, a mold does not need to be replaced or a machine does not need to be stopped to disassemble components, and the production efficiency is improved. And the remodeling time is shortened, and the flexibility and efficiency of multi-specification wire production are remarkably improved.

This utility model belongs to the field of air pollution control and environmental protection, and discloses an intelligent environmental monitoring instrument for air pollution control. It includes a telescopic rod device for easy extension and retraction, and a housing for storing electrical energy and accommodating movement. The telescopic rod device is fixedly installed at the rear of the housing. The housing contains an extension device for lifting, suspending, deployment, and environmental monitoring. The housing includes a chassis body with two symmetrically mounted support legs on one end of the chassis bottom and two symmetrically mounted walking components on the end of the chassis away from the support legs. This intelligent environmental monitoring instrument for air pollution control, through structural innovation, organically combines mobility, deployment stability, and operational efficiency, solving the pain points of traditional environmental monitoring equipment such as laborious handling, time-consuming installation, and poor terrain adaptability. It is particularly suitable for scenarios requiring frequent changes of monitoring points in air pollution control, and has high practical value and promotion potential.

The utility model discloses a kind of iron core structure and transformer, the iron core structure includes iron core body, clamping mechanism and insulation assembly, the iron core body includes multiple silicon steel sheets of laminated arrangement, the clamping mechanism includes two clamps, two the clamp respectively in the two sides of the iron core body;The insulation assembly is located between the clamp and the iron core body, the insulation assembly includes first insulating plate and insulation pad, the first insulating plate is located in the side of the iron core body, and the insulation pad one end and the first insulating plate abut, the other end and the clamp abut.The utility model technical scheme aims at reducing the deformation condition of silicon steel sheet.

The application discloses a circuit board riveting tool, and relates to the technical field of circuit board processing, which comprises a lower die plate and an upper die plate arranged above the lower die plate, wherein the upper die plate is provided with a driving element for driving the upper die plate to move up and down; the top surface of the lower die plate is provided with a plurality of placing rods, the placing rods are provided with arc-shaped circuit boards, the top surface of the placing rods is provided with placing holes, and the placing holes are provided with hollow rivets; the bottom surface of the upper die plate is provided with a plurality of rivet pressing rods corresponding to the hollow rivets, and the rivet pressing rods are provided with rivet pressing plates; the rivet pressing plates are provided with pressure expansion rods, and the diameters of the pressure expansion rods gradually decrease from top to bottom; the pressure expansion rods with gradually decreasing diameters can make the hollow rivets gradually and uniformly deform from the top in the riveting process, reduce the situation that the local pressure is too large, effectively reduce the risk of deformation or even breakage of the hollow rivets, and thus guarantee the mechanical strength of the riveting points and the stability of electrical connection.

This application provides a common-mode inductor, a switching power supply, an inverter, and communication equipment. The common-mode inductor includes a U-shaped magnetic core, an enameled flat copper wire winding, and a fixing structure. The enameled flat copper wire winding is wound vertically on the U-shaped magnetic core. This vertical winding method allows the enameled flat copper wire to be wound perpendicular to the plane of the U-shaped magnetic core. This winding method can improve the filling rate of the winding, reduce the space occupied by the winding, and also help reduce eddy current losses and proximity effects at high frequencies, thus improving the high-frequency performance of the inductor. The enameled flat copper wire has good conductivity and insulation properties, which can meet the operating requirements of the inductor under high current and high voltage environments. The fixing structure is used to fix the U-shaped magnetic core and the enameled flat copper wire winding, ensuring the stability of the winding's position on the U-shaped magnetic core and preventing loosening or displacement of the winding during inductor operation, thereby ensuring the electrical performance and mechanical stability of the inductor.

The utility model relates to the field of overvoltage protector especially relates to a six -column overvoltage protector, including box, body, mounting groove, magnetic ring current distributor and flexible conductor, the box upper end is equipped with the mounting groove that is linear array distribution, the mounting groove inside is equipped with the protector body, the body bottom outside is equipped with the magnetic ring current distributor that is linear array distribution, the mounting groove bottom is equipped with flexible conductor. The device can utilize linear array distribution's magnetic ring current distributor forced shunt, so that each body can participate in the protection process, and the protection efficiency is optimized, the problem that the existing six -column overvoltage protector is easy to appear single column use transition and other column to keep intact is solved, does not have the optimization best protection state, causes the resource waste.

The invention discloses a composite photocatalytic material with excess sludge as a carrier and a preparation method and application thereof.Porous conductive carbon obtained after carbonization and acid pickling of the excess sludge serves as a framework of the material, a core-shell structure unit composed of a CdS nanometer core and a C3N5 shell layer grows on the surface of the framework in situ, and an S-schema heterojunction is formed. The preparation method mainly comprises three steps of carbonization and purification of sludge, hydrothermal in-situ growth of CdS and vapor deposition wrapping of a C3N5 shell layer. The material fully utilizes the charge separation advantage of a conductive network and heterojunction of sludge carbon, shows excellent hydrogen evolution activity and stability under visible light, realizes high-value utilization of excess sludge, and provides a new material for efficient and low-cost photocatalytic hydrogen production.

The invention provides an inner rotor permanent magnet motor, and relates to the technical field of permanent magnet motors, the inner rotor permanent magnet motor comprises a stator winding and a rotor core, a plurality of magnetic pole groups are fixed on the circumferential surface of the rotor core along the circumferential direction, a plurality of magnetic pole blocks with the same polarity are arranged in the magnetic pole groups, and the polarities of the magnetic pole blocks in adjacent magnetic pole groups are opposite; by adopting the radial segmentation design of the magnetic poles, the adjacent magnetic pole groups with opposite polarities comprise a plurality of magnetic pole blocks with the same polarity, so that the stress borne by the magnetic pole blocks in the high-speed rotating process is obviously reduced, and the breaking risk of the magnetic pole blocks is reduced; by arranging the small magnetic pole blocks, magnetizing is more uniform, magnetic flux loss is smaller, and more efficient magnetic field utilization is ensured.

The invention discloses a multifunctional hydrophobic and oleophobic concrete curing film agent as well as a preparation method and application thereof. The preparation method comprises preparation of a first-layer film agent and preparation of a second-layer film agent, the preparation of the first-layer film agent comprises the following steps: adding a polymer monomer, nano silicon dioxide, polycarboxylate, lauryl sodium sulfate, polyvinyl alcohol, a water reducing agent and an anti-ultraviolet agent into water, stirring to form an emulsion, adding an initiator under the protection of nitrogen, and carrying out a polymerization reaction to obtain the first-layer film agent; the preparation of the second-layer film agent comprises the following steps: adding a hydrophobic and oleophobic material, a silane coupling agent and a catalyst into a solvent, and uniformly stirring to obtain the second-layer film agent; the hydrophobic and oleophobic material comprises polydimethylsiloxane and polyvinylidene fluoride. The concrete curing film agent prepared by the invention has good effects of filling, permeating and repairing gaps, has multiple functions of water reduction, water resistance, oil resistance, hydrophobicity, crack prevention and the like, is durable in use stability, and effectively expands the use universality of the curing film agent.

This invention discloses a heterogeneous stacked GAA structure with an intermediate diamond thermal conductive layer and its manufacturing method. The structure includes multiple stacked GAA wafers, each wafer being a double-sided 2nm GAA integrated structure, with a diamond thermal conductive layer embedded within an intermediate silicon substrate. The manufacturing method includes: temporarily bonding a first 2nm GAA wafer to a glass substrate, etching a thermally conductive cavity on the back side, and growing high-density polycrystalline diamond in situ using MPCVD; thinning and temporarily bonding the back side of a second 2nm GAA wafer; low-temperature hybrid bonding on the diamond layer and the circuit surface of the second wafer; laser lift-off of the substrate; achieving multi-layer stacking through microbumps and copper-copper bonding, and encapsulating it within an encapsulation layer. Thermally conductive microchannels are provided within the encapsulation layer for connection to an external cooling system. This invention completely eliminates the heat accumulation effect of 3D stacking through double-layer thermal conductivity, supports full-load operation of double-sided GAA without frequency reduction, and simultaneously doubles the computing power density.

The utility model discloses a kind of visual display devices for vehicle driving simulation training, it is related to the technical field of visual display, it includes support and display screen, the display screen is set on support;The support includes connecting seat;Stand, rotation is set in the top of connecting seat by pivot;Sleeve, is sleeved on stand;Mounting panel, rotation is set on sleeve by pivot;Two the pivot are all provided with locking member, for locking the position after pivot rotation;The display screen is detachably set on the side of mounting panel, adopts stand, sleeve double pivot structure cooperation locking member, realize the three-dimensional adjustment of display screen horizontal angle, vertical height and inclination angle, both can adapt the individualized visual angle demand of different body type user, also can keep the mechanical stability of display unit in intense simulation movement, avoid visual angle deviation interference training effect.