1843 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.

The invention provides a thermal protection coating as well as a preparation method and application thereof. The thermal protection coating comprises a NiCoCrAlY first bonding layer, a NiCoCrAlY second bonding layer, a CeYSZ first ceramic layer and a GdYbYSZ second ceramic layer which are sequentially arranged on the surface of a base material, and the second NiCoCrAlY bonding layer is made of CeO2 (CeO2) and Al2O3 (Al2O3). According to the invention, a thermal protection coating structure with double bonding layers and double ceramic layers is constructed on the surface of the base material, and CeO2 and Al2O3 nano-particle reinforced phases are introduced, so that the use temperature of the thermal protection coating is increased, and the thermal strain tolerance, the crack resistance and the oxidation resistance are greatly improved.

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.

The invention discloses a coating die head uniform coating distribution method based on a microfluid optimization technology, which comprises the following steps: S1, analyzing the rheological characteristics and coating requirements of a coating, and designing a flexible microfluid channel structure; s2, optimizing the geometric design of the channel by adopting a lattice Boltzmann method simulation technology; s3, the interaction between the coating and the die head surface material is simulated and analyzed through molecular dynamics, and adaptive data is generated; s4, based on the optimized geometric design and the adaptive data, an intelligent dynamic adjustment module is embedded, and a dynamic adjustment mechanism is constructed; s5, synchronous and uniform coating of multiple layers of coatings is achieved through a double-layer micro-channel structure; s6, the thickness and defects of the coating are monitored in real time by combining optical and pressure sensors, and a repair path is generated by combining a parrot optimization algorithm; and S7, an active heat management module is embedded, and the heating power is adjusted to maintain the optimal flowing state of the coating. According to the method, microfluid optimization and intelligent optimization methods are combined, and coating uniformity improvement, defect real-time repair and multi-layer synchronous coating are achieved.

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 a high-frequency and high-performance iron-nickel alloy magnetic powder core and a preparation method and application thereof, belongs to the field of metal magnetic powder cores, and solves the problems that in the prior art, when a metal magnetic powder core is applied at high frequency, high magnetic conductivity, high magnetic conductivity stability and high quality factor are difficult to consider, and the saturation flux density is low. And the preparation process is tedious. The invention discloses a preparation method of a high-frequency high-performance iron-nickel alloy magnetic powder core. The preparation method comprises the following steps: S1, preparing raw materials; s2, performing pretreatment; s3, the pretreated iron-nickel alloy powder and nano SiO2 powder are blended, and inorganic insulation coating powder is obtained; s4, adding the inorganic insulating coating powder into a first coating agent to obtain inorganic and first organic insulating coating powder; s5, adding the inorganic and first organic insulation coating powder into a second coating agent to obtain inorganic and double-layer organic insulation coating powder; and S6, compression molding. The comprehensive magnetic performance of the iron-nickel magnetic powder core is improved, and the preparation process is simplified.

The invention provides a lithium-mixed coated modified ternary positive electrode material as well as a preparation method and application thereof, and relates to the technical field of lithium battery raw materials. Various lithium sources are mixed according to a certain proportion to prepare a ternary positive electrode, co-doping modification is carried out through cooperation of Li3PO4 and a W / Al / Zr / Y / B-containing compound, double-layer coating modification is carried out through cooperation of the Li3PO4 and a Ti / Al-containing compound for primary coating and cooperation of an anhydrous Li compound and TiP2O7 or Ti3 (PO4) 4 for secondary coating, and a double-gradient fast ion conductor coating layer is constructed. The structural stability, the thermal stability, the first discharge capacity and efficiency, the multiplying power, the circulation and storage performance and the like of the single-crystal or polycrystal ternary positive electrode material under different voltage and power conditions are improved; the lithium-mixed multi-element composite ternary positive electrode provided by the invention has the advantages of more stable layered structure, higher safety, higher electronic conductivity, better multiplying power, high specific capacity and long cycle performance.

The invention belongs to the technical field of integrated circuit manufacturing and filters, and discloses a double-layer stacked microstrip band-pass filter. The filter comprises an upper metal layer, an upper substrate, a middle metal layer, a lower substrate and a lower metal layer which are sequentially arranged from top to bottom. A double-layer stacking method is adopted, the multi-order resonators are placed on the lower glass substrate, the upper metal layer, the side wall metalized through holes and the lower metal layer form a metal cavity structure, and the size of the filter is remarkably reduced; the multi-order resonator adopts a stepped impedance resonator structure, so that a low-frequency end zero point generated by high-order mode coupling can be effectively used, and better out-of-band rejection can be obtained; a ceramic substrate or a glass substrate with a relatively large dielectric constant is selected, so that the high-frequency loss of a passive device is remarkably reduced, and the quality factor is improved.

The invention belongs to the technical field of superconducting wires, and discloses a Ni3Sn superconducting wire with a stable RRR value and a preparation method of the Ni3Sn superconducting wire. An oxygen-free copper rod, a Ta sheet and a thin-wall oxygen-free copper sheath are prepared into a Cu / Ta / Cu composite tube, meanwhile, subcomponents are densely arranged and loaded into a Ta barrier layer, then the Ta barrier layer is loaded into the prepared Cu / Ta / Cu composite tube, a final Nb3Sn blank with a double-layer Ta structure is obtained, and the Nb3Sn superconducting wire is prepared through multiple times of stretching. According to the invention, a double-Ta barrier layer structure in the Nb3Sn superconducting wire is realized, and the risk that an original single Ta barrier layer structure is broken in a stretching process to cause diffusion of Sn to a copper stable layer and reduce the RRR value of the wire is reduced. Compared with a traditional single-layer Ta tube superconducting wire, the RRR value of the Nb3Sn superconducting wire prepared through the method is obviously increased, and the Nb3Sn superconducting wire is more stable.

The invention relates to the technical field of metal wires, in particular to a low-voltage aluminum wire and a preparation method thereof, the sectional area of the wire is 35 square millimeters, the wire comprises an aluminum alloy conductor and an insulating layer, the aluminum alloy conductor comprises the following chemical components: 0.7-0.9% of magnesium, 0.4-0.6% of silicon, 0.15-0.25% of copper, 0.08-0.12% of zirconium, 0.05-0.09% of scandium, 0.03-0.07% of silver, 0.01-0.03% of erbium, 0.02-0.04% of vanadium and the balance of aluminum, and the microstructure of the aluminum alloy conductor is in gradient distribution. The center is ultra-fine grains, a transition region contains a nano precipitated phase, the surface layer is of a high-density dislocation and nano precipitated phase synergistic reinforcement structure, the insulating layer is of a double-layer composite structure, the inner layer is a crosslinked polyethylene modified layer, the outer layer is an ethylene-tetrafluoroethylene copolymer modified layer, the electric conductivity is improved to 58% IACS or above, and the tensile strength is improved to 280 MPa or above.

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 discloses a method for preparing a small numerical aperture microlens array, which comprises the following steps of: preparing a silicon-based surface adhesive layer, exposing and overlay, developing, hot melting, etching and the like, setting photoresist spin-coating to be multi-layer spin-coating, enabling photoresist materials and spin-coating parameters of different adhesive layers to be different, enabling the viscosities of three layers of photoresist to be obviously distinguished, and improving the resolution of the three layers of photoresist. The factor is a key factor for influencing subsequent small numerical aperture microlens forming; circular masks with different areas are designed, precise control on the aperture of the micro lens after hot melting of the lens can be realized after overlay exposure, and the surface uniformity of the micro lens array in the silicon-based wafer is improved; the temperature and time of hot melting and baking are the key of fusing the double-layer photoresist structure to form the micro lens; the etching parameters with the etching speed higher than that of silicon are selected, the curvature radius of the microlens can be further increased, the small numerical aperture and the size of the microlens are reduced, and therefore preparation of the small numerical aperture microlens array is effectively achieved.

The invention provides a transparent conductive film with a double-layer grid structure and a preparation method thereof, and relates to the field of transparent conductive films, and the preparation method of the transparent conductive film comprises the following steps: preparing a layer of copper film on the surface of a transparent flexible substrate by using a vacuum coating technology; then preparing a layer of self-cracking film on the surface of the copper film by adopting a self-cracking agent, wherein the self-cracking film naturally cracks to form a net-shaped cracking template; then preparing a layer of BaSnO3 thin film on the net-shaped cracking template by utilizing a magnetron sputtering technology, and removing the self-cracking film on the copper film to obtain a BaSnO3 grid; and finally, spraying an etching solution on the surface of the BaSnO3 grid to etch the copper film into a copper grid, thereby obtaining the transparent conductive film with the double-layer grid structure. The high conductivity of the copper grid and the high permeability of the BaSnO3 grid are combined, the transparent conductive film with high performance is prepared, the overall preparation cost is low, and the product has good application in the fields of transparent conductive components, flexible transparent heaters, flexible display, functional inorganic coatings and the like.

The invention provides a preparation method of a composite double-layer microporous membrane, and belongs to the technical field of separation membrane preparation, different lower-layer and upper-layer membrane casting solutions are prepared respectively, the separation membrane is prepared at one time by adopting a double-scraper casting and coating method, the upper layer is thermally induced phase separation, and the lower layer is thermally induced phase separation or non-solvent induced phase separation; the double-layer liquid membrane is subjected to pre-phase splitting and pore opening in a constant-temperature and constant-humidity environment, and enters a gel bath at a certain temperature after pre-phase splitting, and a microporous membrane with a certain membrane structure is formed under the action of RTIPS and NIPS. According to the invention, a co-coating method is adopted, and VIPS, RTIPS and NIPS are used for adjusting the pore structure of the membrane, so that the microporous membrane meeting different filtering requirements is prepared; the prepared membrane product is high in flux and high in yield; the preparation process is simple and conditions are mild: the microporous membrane prepared by the method is simple in process, mild in conditions and suitable for industrial production; and the membrane structures of the upper and lower membranes can be freely adjusted.

The invention relates to the technical field of lamination processes, in particular to a double-layer glue and three-layer film method for manufacturing a diamond sticker, which comprises the following steps of: setting the total thickness of a film layer based on a top PET film, a glue layer and a substrate PET film, distributing the total thickness to the boundary of the film surface and the glue layer, adjusting the thickness of the PET film, loading the interface thickness control variable of the glue layer, and adjusting the thickness of the glue layer. And generating initial parameters of the film layer structure. According to the method, the lamination loads of different areas of the film layer are decomposed through a finite element analysis algorithm, the loads of multiple areas are uniformly distributed on the surface of the film, the problem of local pressure bearing unbalance easily occurring in a traditional lamination process is avoided, and the thickness of the film layer and the thickness of the adhesive layer are reasonably distributed in the design stage; different functional layers can effectively bear stress in the pressing process, the stress concentration phenomenon between layers is reduced, the pressure is adjusted point by point through multivariate analysis, the overall stress distribution is optimized, and the uniformity and stability of the film layer under the pressure are guaranteed.

The invention discloses a double-layer broadband achromatic super lens based on super-structure atoms and a preparation method thereof. The double-layer broadband achromatic super lens comprises a first layer of super-structure atoms, a substrate and a second layer of super-structure atoms. The method comprises the following steps: determining a phase resonance curve of the double-layer broadband achromatic superlens; determining a relational expression between the focal length of the double-layer broadband achromatic super lens and the lens aperture according to the focal depth of the diffraction lens; and determining the electric field intensity of the double-layer broadband achromatic super lens, and constructing the double-layer broadband achromatic super lens by combining the phase resonance curve of the double-layer broadband achromatic super lens and the relational expression between the focal length of the double-layer broadband achromatic super lens and the lens aperture. According to the invention, the design process of the double-layer broadband achromatic superlens can be simplified, the discrete wavelength is fully utilized to design the space in a regional manner, and then achromatism is realized. The double-layer broadband achromatic super-lens based on the super-structure atoms and the preparation method thereof can be widely applied to the technical field of integrated devices.

The invention discloses a butt-joint epitaxial growth ridge waveguide laser chip and a manufacturing method thereof, and belongs to the technical field of lasers, and the manufacturing method comprises the following steps: manufacturing a ridge waveguide structure on an epitaxial wafer subjected to butt-joint growth, coating a layer of photoresist adhesive and two layers of photoresist on the ridge waveguide structure, forming a window at a convex ridge of the overlay ridge waveguide structure, and forming the butt-joint epitaxial growth ridge waveguide laser chip. The window covers an area above the passive area and a part of the active area, exposing and developing the epitaxial wafer in the window, removing a part of photoresist, etching and removing the residual photoresist in the window to expose the ohmic contact layer, corroding and removing the ohmic contact layer in the window, and removing all the photoresist on the surface of the epitaxial wafer. The length of the ohmic contact layer is controlled through double-layer adhesive photoetching and wet etching, and the ohmic contact layer above the active region is further etched, so that diffusion of current to the passive waveguide direction is effectively inhibited, the threshold current of the chip is reduced, the heating value of the passive waveguide region is reduced, and the reliability of the chip is improved.

The invention provides a broadband stealth material based on an active regulation and control metasurface and a preparation method. A cross structure resistive frequency selection surface, a first dielectric layer, a second dielectric layer, a square ring structure resistive frequency selection surface, a third dielectric layer, a fourth dielectric layer, a multi-fractal structure active frequency selection surface, a fifth dielectric layer, a multi-fractal structure active frequency selection surface, a sixth dielectric layer and a metal backboard are sequentially arranged from top to bottom. The problem that low-frequency wave absorption of a passive absorber and high-frequency wave absorption of an active absorber are difficult to realize at the same time is solved. Resistance type frequency selective surfaces of a cross structure and a square ring structure are adopted for cascade connection, a wide absorption frequency band is generated at high frequency, and a centrosymmetric pattern is adopted, so that polarization stability is achieved. A double-layer multi-fractal structure frequency selective surface is adopted, and a variable capacitance diode and a chip resistor are loaded, so that active tuning of an absorption frequency band can be realized at low frequency. The working range covers the P-K wave band, and the application potential is achieved in the aspects of electromagnetic regulation and control, radar stealth and the like.

Organic electrochemical transistors (OECTs) that include a conducting channel composed of a bilayer of a p-type organic mixed ionic and electronic conductor adjacent to an n-type organic mixed ionic and electronic conductor are provided. The bilayer channel of the OECTs exhibits anti-ambipolar (OFF-ON-OFF) switching upon the application of a gate voltage, whereby a current flows through the channel when both layers of the bilayer are in an “ON” (conducting) state, but not when either or both layers are in an “OFF” (non-conducting) state.

The present disclosure is directed to a new and improved system and method for on-demand insulation, which may be deployed layers of a double-layered window. An on-demand thermal insulator system has a body that is configured to transition between a collapsed form non-deployed state and a deployed state. The body while in the non-deployed state allows a transfer of thermal energy through a defined boundary. The body while in the deployed state in resisting the transfer of thermal energy resists transfer through the defined boundary. In particular configurations, the body has a layer disposed between two material that receives fluid when transitioning from the non-deployed state to the deployed state.

The invention relates to the technical field of glass cover plate coating, in particular to high-hardness anti-dazzle glass combining the light interference principle and micro-nano structure design and an ARAFAG coating technology of the high-hardness anti-dazzle glass. The surface of a glass substrate is sequentially covered with a double-layer TiO2 film layer, an etching layer and an MgF2 film layer from inside to outside. Compared with the prior art, according to the high-hardness anti-glare glass combining the light interference principle and the micro-nano structure design and the ARAFAG coating process of the high-hardness anti-glare glass, the hardness of the glass cover plate after the AR process is remarkably improved, the glass cover plate is combined with the AF process and the AG process, and the anti-glare effect of the glass cover plate is improved. The glass which is excellent in hardness and wear resistance, oleophobic, hydrophobic, oil-stain-resistant, fingerprint-resistant and anti-glare is prepared. Meanwhile, a 3A process is combined to realize coexistence of a plurality of properties. The method can be used for conventional and high-requirement products, and is wider in application range and more suitable for industrial production.

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 belongs to the technical field of micro-channel heat dissipation, and discloses a multi-objective-mean clustering fin optimization method and a double-layer micro-channel radiator. Wherein the double-layer micro-channel radiator comprises a heat sink middle portion, the heat sink middle portion comprises fins located at the two ends and two fins located in the middle, a distance exists between the two fins, and the optimal value # imgabs0 # of the length of the two fins is obtained through the multi-objective-mean value clustering fin optimization method; according to the invention, the double-layer micro-channel radiator not only can reduce the voltage drop, but also can ensure a relatively low peak temperature value, and meanwhile, can also avoid too large voltage drop and too much energy dissipation.

The utility model discloses a novel double-layer pure metal transmission array antenna used for wave beam scanning, compared with a traditional transmission array, a dielectric substrate which is easily influenced by environmental factors is not used, but a pure metal structure is adopted, so that the dielectric substrate is prevented from being damaged in some extreme environments. Meanwhile, two groups of first double-end cross-shaped slot structures and second double-end cross-shaped slot structures which are different in length and parallel to the y direction are etched on the transmission unit, and the first double-end cross-shaped slot structures and the second double-end cross-shaped slot structures are alternately arranged on the transmission unit. Compared with a Huygens pure metal unit, the unit has the functions of low transmission loss and meeting the 360-degree phase change range, the unit structure is simple, large-scale multi-parameter scanning is not needed, the design difficulty is low, the expandability and universality of the unit are improved, meanwhile, an additional structure such as a metal column is not introduced, and the cost is low. And relatively low processing complexity is maintained, and the processing cost is relatively low.

The invention relates to a planar metal metasurface lens with high focusing efficiency, and relates to the field of microwave lenses, the planar metal metasurface lens comprises a dielectric layer, two metal layers and split rings, the two metal layers cover the two end faces of the dielectric layer, a plurality of split rings are distributed on the metal layers at intervals, and the split rings are two groups of concentric segmented circular rings which are distributed inside and outside and are provided with symmetrical double openings; and the opening part of the inner ring deflects by an angle greater than 0 degree along the circle center, so that the segmented circular rings in the opening ring are asymmetrically distributed, and the focusing efficiency greater than 60% and the amplification factor of 16 times are realized. And the advantages of high focusing rate and high magnification are realized.

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 double-layer adhesive film processing equipment, a processing technology and an aluminum-based copper-clad plate, the double-layer adhesive film processing equipment comprises a box body, a base and a cover plate, and the box body is provided with a feeding part, an adhesive coating part, a pre-drying part and an extrusion forming part according to a process flow zone. Through mutual cooperation of the conveying assembly, the bending assembly, the gluing part, the pre-drying part, the extrusion forming part and other working areas, forming of the double-layer glue film can be automatically completed; and the glue film adopts a wire rod coating form, the thickness of each layer of glue film can be controlled to be 25 microns, and meanwhile, the viscosity of the glue is controlled to be 1500-3500 mpa.s, so that the viscosity can ensure that the glue cannot quickly flow due to the influence of gravity after coating, and the overall thickness can be ensured to be uniform after pre-drying and extrusion forming.

The invention is directed to environmentally stable solid lubricant coatings with bilayer transition-metal dichalcogenide structures that are designed to resist the effects of oxidation during long term storage, or during short exposures under conditions that would oxidize similar films that do not have these bilayer structures. In addition to improving oxidation resistance, these bilayer structures also facilitate the more rapid establishment of a low, steady-state friction coefficient than is possible with similar films that do not have these bilayer structures.