988 results about "Bi layer" patented technology

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

Methods and analyte sensors including at least a first working electrode having a first active area thereon, and performing a dip coating operation to deposit a bilayer membrane upon the first working electrode and the first active area. The bilayer may include an inner layer having a first membrane polymer and an outer layer having a second membrane polymer, the first membrane polymer and the second membrane polymer differing from one another. The dip coating operation may comprise one or more first dips in a first membrane formulation to form the inner layer of the bilayer membrane and one or more second dips in a second membrane formulation to form the outer layer of the bilayer membrane upon the inner layer.

An organic light-emitting device comprises an anode, a cathode and an organic layer formed between the anode and the cathode, and the organic layer comprises a hole injection layer, a hole transmission area, an electron blocking layer, a light-emitting area and an electron transmission area. The hole transport region comprises a first material and a second material, the first material and the second material are sequentially evaporated to form two hole transport layers, and the first material is selected from a compound shown in the formula 1; and the second material is selected from a compound shown in a formula 2. According to the invention, the first material with a high refractive index is used as the first hole transport layer, the second material with a low refractive index is used as the second hole transport layer, and the structures of the first material and the second material are respectively limited at the same time. The invention overcomes the limitation of a single material or a simple mixed material in the aspects of hole transport and luminous efficiency. .

The invention relates to the technical field of measuring devices, and particularly discloses a double-layer composite air pipe sealing size laser high-precision detection device which comprises a base and an air pipe, sealing plates are fixedly connected to the positions, close to a port, of the outer surface of the air pipe, a bolt is arranged between the two sealing plates, and a guide seat is movably connected to the upper side of the base. A positioning assembly is arranged on the upper side of the guide base and comprises a sleeve fixedly connected with the outer surface of the upper end of the guide base. By arranging the positioning assembly, the air pipes can be lifted and supported on the two sides of the connecting position of the air pipes through the symmetrically-distributed jacking blocks, the probability that the air pipes deform downwards in the placing process can be effectively reduced, therefore, the two sets of air pipes are kept in a straight line shape, and then the risk that a gap between the sealing plates changes can be reduced; the detection error of the sealing performance of the air pipe joint caused by the external force can be reduced, and the detection precision can be effectively improved.

The invention relates to a quartz crucible coating and a preparation method thereof.The coating is of a double-layer composite structure and comprises a substrate layer and a functional layer, the substrate layer is composed of 40-65 vol% of polycrystalline silicon powder (the particle size D50 ranges from 1 micrometer to 5 micrometers) and 35-60 vol% of nanometer silica sol, and the functional layer covers the surface of the substrate layer and is composed of 50-70 vol% of polycrystalline silicon powder, 20-35 vol% of nanometer silica sol and 5-15 vol% of calcium fluoride powder (the particle size D90 is smaller than 0.5 micrometer). The preparation method comprises the following steps: preparing a substrate layer slurry and a functional layer slurry, sequentially coating the inner wall of a crucible with the slurry, drying, and sintering in an inert atmosphere according to a three-step temperature control program to finally form a coating with the thickness of 180-300 microns and the porosity of 8-15 vol%; the coating structure can avoid pollution of silicon nitride or silicon carbide particles, has excellent demolding performance, thermal stability and adhesive force, further improves the service life of a crucible and the purity of a silicon ingot, and meets the requirements of an advanced semiconductor process for cleanliness and reliability.

The invention provides a composite lithium manganate positive electrode material, a preparation method thereof, a pole piece and a battery, and relates to the technical field of lithium batteries. The composite lithium manganate positive electrode material is of a core-shell structure; the core is lithium manganate, and the shell is a composite coating layer coating the surface of lithium manganate; the composite coating layer comprises a first coating layer and a second coating layer; the first coating layer is CuCe < x > Fe < 2-x > O < 4-y > Li; and the second coating layer comprises PVDF particles. The invention provides a lithium manganate material with a double-layer core-shell structure. The CuCexFe2-xO4-yLi inner layer reduces impedance and stabilizes crystal lattices by virtue of spinel isomorphism and doping, and anchors the PVDF outer layer based on oxygen vacancy; and in cooperation with the surface lithium gradient effect, the structural stability and electrochemical performance of the material are remarkably improved.

The invention discloses a production method of an anti-falling combined type double-layer circuit board, and relates to the technical field of production of combined type double-layer circuit boards, and the production method comprises the following steps: S1, milling an annular groove I in the bottom surface of a first circuit board; s2, an annular groove II is milled in the top surface of the second circuit board; s3, embedding the frame-shaped curing adhesive into the annular groove II of the second circuit board from top to bottom; s4, buckling the annular groove I of the first circuit board outside the upper half part of the frame-shaped curing adhesive from top to bottom; s5, taking out one stent; s6, enabling the exposed part of the protection plate to be tightly attached to the bottom surface of the second circuit board; s7, the exposed part of the protection plate is tightly attached to the outer side wall of the strip-shaped through groove; s8, the two exposed parts of the support are supported on the table top of the machine table; and S9, after the pressure is maintained for a period of time, a first combined double-layer circuit board B can be finally produced. The method has the beneficial effect that the production quality of the combined double-layer circuit board is improved.

The invention discloses a medium-entropy (Zr, Ta, W) C coating and a preparation method and application thereof. The medium-entropy (Zr, Ta, W) C gradient coating is prepared on the surface of the titanium alloy or the iron-based alloy through the double-layer glow plasma surface metallurgy technology, and gradient temperature annealing treatment is conducted. The preparation method has the specific advantages that (1) the prepared coating is of a continuous gradient structure, good interface metallurgical bonding is formed between the coating and a matrix, the bonding force of the coating is not lower than 50 N, and the coating is not prone to cracking and stripping in the service process due to the high bonding strength; and (2) the hardness of the medium-entropy (Zr, Ta, W) C coating prepared by the method is 25-30 GPa, the fracture toughness is 4.0-5.0 MPa * m < 1 / 2 >, and the coating system has balanced hardness and toughness, so that the coating is endowed with excellent wear resistance. The prepared coating has excellent wear resistance and antifriction performance, and has wide application prospects in the field of wear-resistant protective coatings.

The application provides a one-time forming electron beam welding method for a titanium alloy component with single-sided incidence and double-layer welds, which comprises the following steps: a closed cavity structure titanium alloy component is formed by a plurality of mutually shielded multi-layer thin plates through single-direction electron beam incidence; the focusing current of the electron beam is adjusted; the converging effect of the electromagnetic coil is changed to change the focus position, and then the electron beam keyhole depth and size are changed; the keyhole is adjusted to be an energy channel through which the electron beam passes; the electron beam energy can pass through the first layer of welds to reach the second layer of welds; the controllable linear energy is provided by combining the acceleration voltage, the welding current and the welding speed to ensure that the remaining energy that penetrates reaches the second layer of welds to complete the welding of the second layer of welds again; the low-frequency scanning is combined with the electron beam movement to drive the first layer of molten pool metal to flow and fill the rear channel, and the front channel is opened, so that the channel is dynamically smooth and stable, and the electron beam keyhole effect behavior is adjusted.

The invention relates to the technical field of film packaging, in particular to a high-barrier light-enzyme double-response controllable degradation three-layer composite film and a preparation method thereof.The preparation method comprises the steps that a base material layer and a functional layer are subjected to a film blowing process through a double-layer co-extrusion film blowing machine, a double-layer composite film is formed, after cooling, the surface of the double-layer composite film is coated with a barrier layer through a coating machine, and the double-layer composite film is obtained. The preparation method of the high-barrier light-enzyme double-response controllable degradation three-layer composite film provided by the invention is simple and low in cost, the high-barrier light-enzyme double-response controllable degradation three-layer composite film has high barrier property, rapid illumination and enzymolysis double-signal triggering is realized, rapid controllable degradation is realized, and the high-barrier light-enzyme double-response controllable degradation three-layer composite film has the advantages of high light-barrier property, high light-barrier property, high light-barrier property and high light-barrier property. The industrial problem that environmental protection and functionality are difficult to be compatible is solved.

The invention relates to a three-section type composite material air cylinder which comprises two oppositely-arranged shells, and each shell is provided with an opening end; the connecting piece is arranged between the opening ends of the two shells; wherein the opening end of the shell or the end face of the connecting piece is provided with a groove extending in the circumferential direction, and the shell and the connecting piece are bonded through the groove. The shell and the connecting piece are in surface contact connection through the double-layer bonding surface of the groove, under the condition of the same pressure intensity, the surface contact structure has a larger stress area, stress concentration can be effectively reduced, stress distribution of the connecting part is more uniform, the groove has a limiting effect, the connecting precision is ensured, and the service life of the shell is prolonged. And the air tightness of the connecting part and the reliability of the whole structure are improved.

The utility model discloses a prism structure, a visual angle expanding film, a backlight module and a display device, and relates to the technical field of optical films. The prism structure comprises a plurality of first prism parts and a plurality of second prism parts, the top of the second prism part is connected with the bottoms of the first prism parts; wherein the cross sections of the first prism parts are isosceles right triangles, the cross sections of the second prism parts are isosceles trapezoids, and the top width of the second prism parts is the total bottom width of the first prism parts. According to the utility model, the problems that the 1 / 2 light intensity range in the horizontal direction of a general display is within + / -50 degrees, and the 1 / 2 light intensity range in the vertical direction of the general display is within + / -35 degrees due to a single prism sheet, or a diffusion film and prism sheet bonding (DOP) / micro lens film and prism sheet bonding (MOP) and other structures with single prism layers in the current brightness enhancement film technology are solved; if a double-layer prism framework optical film scheme is used, the 1 / 2 light intensity range in the horizontal direction and the 1 / 2 light intensity range in the vertical direction are both lower than + / -35 degrees.

A bilayer film of a magnetic body and an insulator has an antiferromagnetic layer having a hexagonal crystal structure and at least one surface of which is the (10-10) surface of an antiferromagnetic body, and an insulator layer containing two or three or four atoms laminated on the (10-10) surface of the antiferromagnetic layer. A bilayer film of a magnetic body and an insulator has an antiferromagnetic layer having a hexagonal crystal structure and at least one surface of which is the (0001) surface of an antiferromagnetic body, and an insulator layer containing two or three or four atoms laminated on the (0001) surface of the antiferromagnetic layer. The tunneling magnetoresistive element has a second antiferromagnetic film layer laminated on the insulator of the bilayer film. The magnetic memory includes a plurality of the tunneling magnetoresistive elements.

The invention relates to a double-layer Si-Zr self-reaction coating and a preparation method thereof, and belongs to the technical field of carbon ceramic ablative materials. B4C powder is subjected to ball milling and crushed until the diameter is smaller than 100 nm, ZrSi2 alloy is added and evenly mixed with B4C subjected to ball milling, a polycarbosilane solution is added for ball milling, ZrSi2 slurry wrapped by B4C is obtained and dried, and ZrSi2 powder wrapped by B4C is obtained; adding the powder into a polysiloxane solution containing SiC powder, and mechanically and sufficiently mixing to obtain slurry; spraying the slurry on the surface of the C / C material through pressurization, and drying to obtain the coating material. The coating comprises the polysiloxane-containing SiC layer on the outer layer and the B4C-ZrSi2 layer on the inner layer, in the oxidation ablation process, the crack effect of the coating on the surface layer can be achieved within a certain time, and the oxidation rate of the material is greatly decreased.

The invention provides a method for predicting and evaluating the electromigration life of a low-temperature interconnected Sn-Bi-based alloy micro-welding spot and application, and relates to the field of reliability evaluation of advanced electronic packaging micro-scale welding spots. Based on an electromigration failure physical mechanism, starting from a theory that Bi atoms are directionally migrated by electron wind power, the association between atomic diffusion flux and beta-Sn / Bi two-phase separation, anode Bi-rich layer growth and resistance evolution is disclosed; according to the method, cross-scale systematic correlation of micro atom migration (Bi atom migration)-mesoscopic structure evolution (beta-Sn / Bi two-phase separation and anode Bi phase precipitation)-macroscopic welding spot failure (resistance increase) is achieved, micro structure evolution of Sn-Bi-based alloy micro welding spots in the electromigration process is quantified, reliable physical mechanism support is achieved, and the method is suitable for large-scale application. The parameter calibration workload is remarkably reduced (compared with an empirical formula Black equation commonly used in current electromigration life prediction, the parameter calibration workload is reduced by 80%), and the prediction precision can reach 90% or above.

The invention provides a high-purity structural color device based on a metasurface and a color developing method, and relates to the technical field of structural color metasurface, the structural color device is a double-layer nanoring array based on an all-dielectric metasurface, adopts an optical design based on Fabry-Perot interference and Mie resonance, and comprises a plurality of structural units, the structure unit comprises a vertical stacking double-layer circular ring structure formed by a tantalum pentoxide Ta2O5 functional layer and a silicon dioxide SiO2 top cover layer, and has sub-wavelength periodic two-dimensional arrangement; through the technical path of the invention, a structural color solution with high purity, wide color gamut and high reflection is provided by utilizing the wide band gap characteristic and high-quality manufacturing capability of Ta2O5. The application scenarios include but are not limited to high-end displays, optical sensors, information encryption and precision optical elements, and brand new possibility is provided for development of the next generation of photonics technology.

The invention discloses a double-layer acrylic acid OCA optical adhesive for a folding screen and a structural characterization method of the double-layer acrylic acid OCA optical adhesive, and belongs to the technical field of optical adhesives. The OCA optical cement comprises an upper high-creep layer and a lower high-recovery layer, and an intersoluble cross-linked structure is formed on the interface of the two layers through a gradient curing process. The upper layer formula contains 70-90 parts of 2-ethylhexyl acrylate and 10-30 parts of hydroxy butyl acrylate; the formula of the lower layer comprises 20-35 parts of isobornyl acrylate, 50-70 parts of 2-ethylhexyl acrylate and 5-15 parts of hydroxy butyl acrylate. And the longitudinal crosslinking density gradient is represented by adopting a unilateral nuclear magnetic resonance depth analysis technology. The contradiction between high adhesion and high resilience of the folding screen OCA is solved, high light transmittance, low haze, high stripping force and high creep recovery rate are achieved, and the resistance change rate is remarkably reduced after dynamic folding.

The invention discloses an MEMS device and a manufacturing method thereof, and the method comprises the steps: forming a first MEMS structure: providing a first substrate, forming a first sensing layer on the first substrate, and sequentially forming a first cavity and a second sensing layer on the first sensing layer; forming a second MEMS structure: providing a second substrate, forming a third sensing layer on the second substrate, and sequentially forming a second cavity and a fourth sensing layer on the third sensing layer; bonding the second sensing layer and the fourth sensing layer to form a common sensing layer; the part, corresponding to the first cavity, of the first substrate is removed, and the first sensing layer forms a movable sensing layer. According to the MEMS device and the manufacturing method thereof provided by the invention, the stacked double-layer capacitor structure is prepared by adopting a heterogeneous bonding mode, the process is simple, the implementation is high, the prepared device structure does not need to be plugged, the problem that the sensing layer is uneven due to hole plugging is avoided, and the reliability of the device is improved. The reliability problems of air leakage and the like of the hole blocking structure caused by repeated pressure measurement motion of the upper-layer pressure sensing film of the sealing cavity are also avoided, and the service life and the yield of the device are improved.

The invention provides an etching solution compatible with Cu / Mo and Cu / MTD and application of the etching solution. The etching solution comprises a main agent and an auxiliary agent, the main agent comprises the following components in parts by weight: 5-22 parts of an oxidizing agent, 1-15 parts of organic acid, 0.01-5 parts of inorganic acid, 0.5-15 parts of organic alkali, 0.01-5 parts of a stabilizer, 0.01-1 part of a metal inhibitor and 1-100 parts of water. The etching solution provided by the invention can be effectively compatible with two different metal structures, namely Cu / Mo and Cu / MTD, and can realize a good etching effect on different metal film layers in the etching process, so that the problem of poor etching caused by poor compatibility of the etching solution is reduced, and the yield of products is improved; the etching solution has excellent etching performance on Cu / Mo and Cu / MTD alloy double-layer films and the like, no residue is left after etching, substrate materials such as a glass substrate and the like cannot be damaged, and the high requirement of the modern electronic manufacturing process on the etching solution is met.

The invention discloses a wind tunnel model surface pressure measuring system and method based on a double-layer PSP, and belongs to the technical field of aerodynamic wind tunnel test detection. The microsecond pulsating pressure field and the microsecond pulsating temperature field can be measured at the same time on the premise that microsecond pressure response time is kept. A double-layer PSP coating is sprayed on the surface of a test model, mark points are arranged on the double-layer PSP coating, a first lens and a first optical filter are sequentially installed on a first high-speed camera, and a second lens and a second optical filter are sequentially installed on a second high-speed camera; the first high-speed camera and the second high-speed camera are respectively connected with a synchronizer, and the synchronizer is connected with a computer; laser emitted by the excitation light source is irradiated on the double-layer PSP coating to obtain fluorescence for exciting the double-layer PSP coating. According to the invention, the correction of microsecond pulsating pressure errors caused by non-uniform temperature in the process of measuring the surface pressure of the wind tunnel model is realized.

To improve a thermal gradient of a near-field transducer (NFT) and increase an areal density capacity of a HAMR head.SOLUTION: An NFT includes a main pole (MP) 302, a two-layer transducer 304 positioned adjacent to the MP, a waveguide core 306, and a parabolic waveguide blocker 308 positioned adjacent to the waveguide core, wherein the parabolic waveguide blocker includes a parabolic shape having a surface exposed to an air-bearing surface (ABS) of a write head. The parabolic waveguide blocker reduces electromagnetic radiation from the waveguide core, recycles a scattering field emitted from the NFT to mitigate a thermal background in a recording medium, improves a thermal gradient, and increases an areal density capacity (ADC) of a hard disk drive write head.SELECTED DRAWING: Figure 3A

The application discloses a graphene sliding ferroelectric regulation method and device based on defect engineering and belongs to the technical field of two-dimensional ferroelectric materials. In the application, structural defects are introduced into specified monolayers of double-layer graphene, the lattice spatial symmetry is destroyed, and a defect double-layer graphene system with intrinsic polarity is constructed. Then, the system is polarized and regulated by using out-of-plane interlayer sliding, the out-of-plane ferroelectric polarization is reversibly flipped, and a non-typical sliding ferroelectric response is formed. Meanwhile, a three-layer graphene structure is constructed, defects are introduced into specific layer positions, and a defect three-layer graphene system with high polarization intensity is prepared. The system is subjected to double-mode sliding regulation, small-amplitude polarization is quickly switched by using low-barrier in-plane interlayer sliding, and super-high out-of-plane polarization is obtained by using out-of-plane interlayer sliding, and the polarization is reversibly flipped. The application breaks through the limitation of traditional two-dimensional sliding ferroelectric regulation, provides a new design idea for the research and development of high-performance van der Waals ferroelectric devices, and can be applied to the fields of high-density information storage, intelligent sensing and preparation of new microelectronic devices.

The application belongs to the field of turbine blade thermal barrier coating of an aero-engine. Specifically, it is a structure design, a preparation method and a prepared coating of a double-layer radiation-resistant thermal barrier coating with a high-reflection layer and a high-absorption layer. The coating comprises a high-absorption layer and a high-reflection layer. The high-absorption layer can absorb part of the energy of photon radiation and re-emit it into the environment, while relying on a cooling gas film to quickly remove heat. Part of the energy of the photon radiation is reflected by the high-reflection layer again to the high-absorption layer after passing through the high-absorption layer, and the process of absorption-emission-cooling gas film heat dissipation is repeated. Within a set temperature range, the absorption rate of the high-absorption layer is determined based on the temperature difference requirement between the inner and outer surfaces of the thermal barrier coating, and the high-absorption layer material is determined based on the absorption rate. The application greatly reduces the radiation heat flow penetrating the coating, avoids the direct heating of the high-temperature alloy by infrared radiation, and significantly improves the heat insulation capacity of the thermal barrier coating and the service life of the turbine blade.

The utility model relates to the technical field of cleaning window installation structures, in particular to a cleaning window installation structure which comprises a first frame, a second frame is arranged on the surface of the first frame, third clamping grooves are formed in the periphery of the first frame and the periphery of the second frame, and limiting grooves are formed in the side faces of the third clamping grooves. A first fixing piece and a second fixing piece are rotationally connected into the limiting groove, and the first fixing piece and the second fixing piece are clamped into third clamping grooves formed in the periphery of the first frame and the periphery of the second frame through the limiting groove. When the first frame and the second frame are fixed, a part of the first frame is rotated into limiting grooves formed in the first frame and the double-layer glass plate on the opposite side to be clamped, so that the double-layer glass plate can be fixed to the middle of the first frame and the second frame, and the double-layer glass plate is fixed; and the installation structure is more stable, punching treatment does not need to be conducted on the window frame, and the situation that dust enters the interior to affect the using effect of the clean window is avoided.

1. The name of the design product: pet recliner (arc-shaped double-layer). 2. The use of the design product: the design product is used for pet grinding claws, playing and resting. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: combination state figure 2.

1. Name of the product in this design: Double-walled glass cup. 2. Purpose of this design: This design is used to hold liquids. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. Name of the product in this design: Washbasin (Double-layer Multipurpose 282). 2. Purpose of this design: for cleaning and washing. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

The invention discloses a sintered neodymium-iron-boron permanent magnet with excellent comprehensive performance and a preparation method thereof, and the preparation method comprises the following steps: (1) taking a metal oxide as a sputtering target material, and sputtering a layer of non-rare earth metal oxide on a neodymium-iron-boron sheet to form a first diffusion layer; (2) taking the mixed alloy as a second diffusion source, uniformly mixing absolute ethyl alcohol and PVB (Polyvinyl Butyral) glue, and coating on the first diffusion layer to form a second diffusion layer; the mixed alloy comprises light rare earth, heavy rare earth and high-potential metal; and (3) placing the treated sample in a high-vacuum oxygen-free heat treatment furnace, and performing diffusion heat treatment to obtain the sintered neodymium-iron-boron permanent magnet with excellent comprehensive performance. The double-layer diffusion source is used for grain boundary diffusion, and meanwhile the comprehensive performance such as coercive force, corrosion resistance and resistivity of the magnet is improved.

A Ka-band double-layer substrate integrated waveguide directional coupler belongs to the technical field of communication and comprises two layers of laminated dielectric substrates, a plurality of mounting holes are formed in the surfaces of the dielectric substrates and used for mounting waveguides; after the two layers of dielectric substrates are laminated, the surface between the outer surface and the dielectric substrates is coated with copper, and the wide wall part of the outer surface is provided with a mounting hole matched with the mounting hole of the dielectric substrate, a butt joint groove used for being in butt joint with the waveguide port, and a metalized through hole penetrating through the two layers of dielectric substrates. Coupling grooves which are regularly arranged are formed in the wide wall between the two layers of dielectric substrates in the electromagnetic wave transmission direction and used for coupling electromagnetic waves of one layer of dielectric substrate to the other layer of dielectric substrate. The feed structure adopts a waveguide-substrate integrated waveguide transition structure, the bandwidth is relatively wide, the waveguide joint is used as a feed end interface, and the transmission loss is relatively small. The two substrate integrated waveguide wide-wall coupling structures improve the miniaturization degree of the product.