715 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 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 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 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 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 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.

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.

This invention discloses a heterolayer-coupled cellulose-based composite membrane with impact resistance and fatigue resistance, and its preparation method. The membrane comprises: a rigid support layer composed of cellulose pulp, providing overall structural support and dimensional stability; and a flexible crosslinked layer located on the surface of the rigid support layer, composed of gelatin treated with a DES solvent system and crosslinked with glutaraldehyde, used to absorb impact energy and disperse stress. The rigid support layer and the flexible crosslinked layer form a heterolayer-coupled structure. By adjusting the modulus difference between the two layers, the bending stability and durability of the composite membrane under repeated loading and dynamic impact conditions are improved. The bilayer cellulose-based composite membrane of this invention exhibits excellent impact resistance, good fatigue resistance, and structural stability under dynamic impact and repeated bending conditions.

1. The name of the design product: double-layer banana sieve. 2. The use of the design product: used for material screening. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best shows the design points: perspective view.

The invention belongs to the technical field of high-temperature sealing connection, and provides a preparation method of a double-layer metal sealing connecting pipe, which comprises the following steps: selecting two metal materials with complementary high-temperature-resistant high-strength performance and corrosion-resistant performance, respectively preparing an outer-layer pipe and an inner-layer pipe, coaxially sleeving the inner-layer pipe with the outer-layer pipe, and sealing the inner-layer pipe with the outer-layer pipe; the gap of the double-layer metal pipe is controllable, and the coaxiality of the double-layer metal pipe meets the assembly requirement; the middle of the double-layer metal pipe serves as a welding section, a plurality of resistance welding spots are arranged on the welding section in the circumferential direction, and the outer-layer pipe and the inner-layer pipe are fixedly connected into a whole through a discrete resistance spot welding technology; and the two ends of the double-layer metal pipe subjected to spot welding are subjected to spinning forming, an expansion opening structure with fillet transition is obtained, the sealing performance of the ends is enhanced, and the double-layer metal sealing connecting pipe is obtained. By means of the method, the problems that a traditional single-layer sealing pipe is low in reliability and single in material performance can be solved.

A colored bilayer sub-ambient radiative cooling coating designed to enhance solar reflectance and aesthetic coloration is introduced. The coating includes a white bottom layer containing TiO2 or ZrO2 nanoparticles, and hollow glass spheres dispersed in a polymer matrix, and a colored top layer containing SiO2 microspheres and fluorescent pigments selected from Sr2Si5N8:Eu2+, Y3A15O12:Ce3+, (Ba,Sr)SiO4:Eu2+, or SrO·Al2O3:Eu phosphors dispersed in a polymer matrix. This bilayer structure achieves an effective solar reflectance of at least 90% and reduces surface temperature by at least 3° C. compared to ambient air, providing energy-efficient cooling with aesthetic appeal.

The invention provides a microfluidic device (100) for the formation of lipid bilayers, wherein the microfluidic device (100) comprises a first fluid inlet (111), a first fluid outlet (112), and a first microfluidic channel (110) configured to fluidically connect the first fluid inlet (111) and the first fluid outlet (112), wherein: (A) the first microfluidic channel (110) comprises a membrane formation section (200) having a membrane formation section axis (Emfs) of elongation, wherein the channel wall (115) at the membrane formation section (200) comprises a membrane formation wall section (215); (B) the membrane formation section (200) comprises a plurality of micropillars (210); (C) the plurality of micropillars (210) are configured in an n*m array parallel to the membrane formation section axis (Emfs) of elongation; wherein n is selected from the range of ≥1 and m is selected from the range of ≥2; wherein the n*m array is configured to define (i) n+1 elongated subchannels (110a,110b,110c...) within the first microfluidic channel (110) and (ii) per row of the n rows m-1 fluidic connection sections (105); wherein each of the plurality of micropillars (210) tapers in directions parallel to the membrane formation section axis (Emfs) of elongation towards respective adjacent micropillars (210); (D) the membrane formation wall section (215) is configured in a wave-like shape parallel to the membrane formation section axis (Emfs) of elongation.

In a two-layer insulator, the number of components in the covering material provided within the insulator is reduced, thereby enabling weight reduction. [Solution] The insulator comprises an inner insulator positioned around the exhaust component, an outer insulator positioned around the inner insulator, and a covering member positioned in a first space between the inner insulator and the exhaust component, and in a second space between the outer insulator and the inner insulator. The inner insulator is provided with one or more through holes that connect the first space and the second space, and the covering member is inserted through the through holes and positioned to straddle the first space and the second space.

1. Name of the product in this design: Double-layer box (yellow glaze engraving). 2. Purpose of this design: for use as a decorative item or for holding items. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention belongs to the field of metal material surface engineering, and provides a high-strength wear-resistant shell alloy material and a preparation method thereof. According to the invention, a synergistic process route of alloy component optimization design, surface mechanical rolling and gas nitriding composite strengthening is adopted, and a double-layer gradient structure of a gradient nanocrystalline strengthening area and a nitriding diffusion area is constructed on a carbon-manganese-silicon-chromium-molybdenum-nickel-vanadium-niobium alloy matrix; gradient matching of surface layer superhardness and core part toughness with the surface Vickers hardness being 850-1100 HV0.1 and the core part Vickers hardness being 350-550 HV1 is achieved, the thickness of a gradient nanocrystalline strengthening area is 50-300 microns, the thickness of a nitriding diffusion area is 0.30-0.60 mm, the room-temperature tensile strength is 1100-1600 MPa, the percentage elongation after fracture is 8-20%, and the hardness of the surface layer superhardness and the core part toughness is not larger than 100%. The cross-domain coupling contradictions that extremely high hardness and overall toughness of the surface of a shell type wear-resistant material are difficult to consider at the same time and the residual stress gradient and the dimensional stability are difficult to control are solved, and the method has wide application value in manufacturing of wear-resistant parts such as shells, shells and protective covers under the high-strength wear working condition.

The application discloses a coating die and a coating machine, and relates to the technical field of battery pole piece manufacturing. The coating die comprises a first die, a second die, a coating assembly and a coating assembly. The first die and the second die are provided with a first gasket therebetween to form a first coating slot. The second die is provided with a slurry distribution cavity in communication with the first coating slot, and the slurry distribution cavity is adapted to pass the first slurry. The coating assembly is installed on the first die and extends into the first coating slot, and the coating assembly is adapted to pass the second slurry. The coating assembly is installed on the first die and is in communication with the first hole, and the coating assembly is adapted to pass the third slurry. The application realizes multi-material coating, greatly improves the production efficiency and saves the cost. Moreover, the existing die body does not need to be modified, and only the corresponding adjusting mechanism needs to be replaced as the coating assembly, so that the compatibility is relatively strong. In addition, the application can also be applied to double-layer coating to realize double-layer multi-material point coating of double-layer coating surfaces.

This invention discloses an extrusion device for outer protective tubes of buried cables, relating to the field of cable outer protective tube production technology, aiming to solve the problem of easy delamination in traditional double-layer co-extrusion structures. The key technical points are: for producing cable outer protective tubes with reinforced structures, the device includes a first extruder, a second extruder, and a forming die head; the forming die head is located at the discharge port of the first and second extruders. The first extruder provides a first polymer melt to form the tube matrix, and the second extruder forms a second polymer melt with reinforcing material. This invention, through the cooperation of a rotating mandrel and a tangential injection hole, allows the reinforcing melt to dynamically embed into the inner wall of the matrix in a helical trajectory, forming a continuous helical reinforcing rib structure. This structure significantly improves ring stiffness and resistance to external pressure without significantly increasing wall thickness and weight, and because of the one-piece molding, it solves the problem of easy delamination in traditional double-layer co-extrusion structures.