308 results about "Oxygen plasma" patented technology

The invention discloses an instrument capable of being separated through light control and a preparation method and application of the instrument, and belongs to the technical field of biomedical engineering and flexible electronics. The instrument capable of being separated through light control comprises a flexible substrate layer, an electrode layer and a gel integration layer, the preparation method comprises the following steps: (1) forming an electrode pattern on a silicon wafer through photoetching, and carrying out oxygen plasma treatment to prepare a hydrophilic surface; (2) spin-coating a water-soluble polymer solution to form a sacrificial layer; (3) spin-coating silicone rubber pre-polymerized liquid and curing to form a flexible substrate layer; (4) dissolving the sacrificial layer with water to realize demolding, and embedding a patterned conductive material into the surface to form an electrode layer; and (5) coating the photo-responsive adhesive hydrogel pre-polymerization liquid, and performing cross-linking curing to form a gel integration layer, thereby obtaining the photo-responsive adhesive hydrogel. Through integrated structural design and functional material integration, the brain-computer interface ECoG electrode with high flexibility, high adhesion, high conductivity and controllable debonding capacity and the like is provided, and a technical basis and an application platform are provided for a next-generation intelligent implantable brain-computer system.

The invention provides a micro-fluidic chip capable of culturing oral squamous cell carcinoma organoid and a preparation method thereof, and relates to the technical field of micro-fluidic chips, the chip comprises a four-layer structure: the first layer is a closed layer, the second layer is a culture solution / drug pool layer (containing a concentration gradient injection channel and a slow flow channel), the third layer is a matrix culture pool layer, and the fourth layer is a matrix culture pool layer. The fourth layer is a matrigel inflow layer (containing an S-shaped flow channel); the second layer and the third layer are integrally formed, and all the layers are connected through oxygen plasma welding; the problems that in the prior art, matrigel is prone to shifting, drug gradient regulation and control is poor, operation is tedious, and adaptability is insufficient are solved, the matrigel and organoids can be stably fixed, the drug concentration gradient can be precisely regulated and controlled, the nutrition supply efficiency is enhanced, the structural integration level and operation convenience are improved, and the application prospect is wide. The method is suitable for oral squamous cell carcinoma organoid culture, drug screening and tumor mechanism research.

The invention relates to a glass fiber reinforced polyurethane composite material and a preparation process thereof, and belongs to the technical field of polymer composite materials. The formula of the glass fiber reinforced polyurethane composite material comprises the following components in parts by weight: 60-80 parts of thermoplastic polyurethane, 15-25 parts of modified glass fiber, 2-5 parts of an interface modifier, 1-2 parts of an antioxidant and 1-3 parts of a lubricant. A covalently bonded silane coupling agent-nano silicon dioxide composite transition layer is formed by mixing chopped glass fibers and continuous glass fibers to construct a synergistic enhancement system and combining argon-oxygen plasma activation and nano silicon dioxide sol coating processes, so that the interfacial shear strength is remarkably improved, the stress concentration is effectively relieved, and the service life is prolonged. The tensile strength and the impact strength of the material are obviously improved.

The invention relates to the field of optical thin films, in particular to a preparation method of an optical diffusion film. A preparation method of an optical diffusion film comprises the following steps: uniformly mixing a curing agent and polydimethylsiloxane, curing, and then carrying out oxygen plasma treatment and room temperature aging treatment to obtain a polydimethylsiloxane flat plate; dissolving PET particles and PMMA particles in a solvent to obtain a polymer solution; and placing a polydimethylsiloxane flat plate above the polymer solution, and standing to obtain the optical diffusion film. According to the application, PMMA is used as a high glass transition temperature component to be blended with PET, so that the overall glass transition temperature of a blending system is improved, and the practicability of the optical diffusion film in a high-temperature environment is improved; strong scattering is provided through the refractive index difference between air holes and a polymer phase, and a refractive index gradient is formed by using the refractive index difference between PET and PMMA, so that a secondary scattering interface is formed, and light absorption is reduced and high transmittance is maintained while high haze is ensured.

The invention discloses a reinforced and toughened modified composite material based on recycled PET (Polyethylene Terephthalate) and a green preparation process, and belongs to the field of preparation of polymer-based composite materials. The invention aims to solve the problems of insufficient mechanical strength, poor interfacial compatibility, green preparation contradiction, recycling bottleneck and the like of the existing PET material. The composite material is prepared from 15 to 20 parts of bamboo fiber, 100 to 120 parts of natural rubber, 100 to 120 parts of PET resin, NR-g-MAH, a bio-based epoxy chain extender, an antioxidant and the like. According to the preparation process, the bamboo fibers are modified through low-temperature oxygen plasma and ultrasonic synergism, and reinforcing and toughening are achieved in combination with natural rubber dynamic vulcanization, supercritical CO2-assisted blending and ester bond crosslinking of a chain extender and PET in a double-screw extruder. The tensile strength of the obtained material is 85-95 MPa, the notch impact strength is 18-22 kJ / m, the heat distortion temperature is 105-110 DEG C, the bio-based content is greater than or equal to 30%, and the material has excellent mechanical properties and environmental friendliness.

The invention discloses a cleaning method and a cleaning system for a deposition chamber. The cleaning method comprises the following steps that dissociated NF3 is introduced from the top of a cavity so as to at least clean tungsten residues in the upper half area in the cavity for one time; stopping introducing the dissociated NF3, and introducing dissociated O2 from the top of the chamber so as to at least clean the carbon residues in the upper half area for one time; and dissociated NF3 is introduced from the top and the bottom of the cavity at the same time, so that the tungsten residues and the carbon residues in the upper half area and the lower half area in the cavity are subjected to secondary cleaning. By executing the steps, the problem that the cleaning effect on the carbon residues in the chamber is poor due to combination of nitrogen plasma and oxygen plasma caused by simultaneous dissociation and introduction of NF3 and O2 into the chamber can be solved, so that the cleaning effect on the carbon residues is improved, the cleaning time is shortened, and the cleaning efficiency is improved. And the process effect and the process stability of the tungsten carbide thin film in the chamber are further improved.

The invention provides a composite acrylic acid low-surface-energy antifouling coating, a preparation method and application, and belongs to the technical field of marine antifouling materials, the composite acrylic acid low-surface-energy antifouling coating comprises a three-layer composite structure, the three-layer composite structure comprises a bottom layer, a middle layer and a surface layer from bottom to top, the bottom layer is capsaicin-loaded polymethyl methacrylate, and the middle layer is a polymethyl methacrylate surface layer. The bottom layer is made of capsaicin, the middle layer is made of pressure-sensitive adhesive activated by oxygen plasma, the surface layer is made of dihydroxyl-terminated polydimethylsiloxane, the mass ratio of the bottom layer to the middle layer to the surface layer is (23-25): 1: (23-25), and the mass content of capsaicin in the bottom layer accounts for 5.82-5.75% of the total mass; based on the bonding strength change of the pressure-sensitive adhesive generated by oxygen plasma jet and the capsaicin for effectively inhibiting biological growth, polyacrylic acid is used as a self-polishing reservoir to continuously release an environment-friendly antifouling agent; the pressure-sensitive adhesive adheres to the polydimethylsiloxane layer through the adhesive force change generated by oxygen plasma to achieve the low-surface-energy antifouling effect, synergistic gain is achieved, the composite material intervenes into the biological fouling process from multiple aspects, and the composite material copes with the marine biological fouling process jointly.

The invention discloses a high-gain diamond logic phase inverter and a preparation method thereof, and aims to solve the problem that the voltage gain of an existing logic phase inverter is relatively small. According to the high-gain diamond logic inverter, a diamond substrate is subjected to hydrotreating through hydrogen plasma to form the diamond substrate with a hydrogen terminal, a conducting channel is formed after the surface of the hydrogen terminal is in contact with air, and a first source electrode, a first drain electrode, a second source electrode and a second drain electrode are arranged on the diamond substrate. A first ferroelectric medium layer and a second ferroelectric medium layer are deposited on a diamond substrate, a first grid electrode is arranged on the first ferroelectric medium layer, and a second grid electrode is arranged on the second ferroelectric medium layer. According to the invention, an electron beam evaporation process is adopted to form an orthorhombic phase on a ferroelectric material deposited at a low temperature, the ferroelectric material has convertible ferroelectric characteristics, and ultra-steep sub-threshold swing is realized; the surface conductivity can be regulated and controlled by treating the surface of the hydrogen terminal diamond through the oxygen plasma, current matching is achieved, and the logic inverter works in a deep subthreshold region.

The invention relates to the technical field of micro-fluidic biological detection, and discloses a micro-fluidic chip for rapidly detecting bacteria based on multi-mode detection, a preparation method and a detection method.The chip comprises a PDMS runner layer and a glass substrate layer which are sequentially arranged from top to bottom; the PDMS flow channel layer comprises an injection area used for receiving a to-be-detected sample and carrying out pretreatment; the focusing area is used for realizing three-dimensional fluid focusing of the detected particles through a coupling effect of viscoelasticity and an inertial effect; the detection area is used for performing electrical impedance detection and fluorescence detection on the focused particles; the outflow area is used for collecting and outputting the detected sample; the PDMS flow channel layer and the glass substrate layer are bonded through oxygen plasma to form a sealed channel structure, and the sealed channel structure is used for realizing electrical impedance and fluorescence dual-mode synchronous detection of microbial particles in a single flow channel. By optimizing the fluid focusing structure and the electrode design, high-precision synchronous detection of the microbial particles is realized.

The invention belongs to the technical field of separation membrane materials, and discloses a graphene oxide modified hollow fiber membrane for oily wastewater treatment and a preparation method of the graphene oxide modified hollow fiber membrane. Firstly, a hollow fiber base membrane is prepared through a phase inversion method; then performing oxygen plasma pretreatment to activate the surface; immersing the activated base membrane into a Tris-HCl buffer solution of dopamine and polyethyleneimine, and forming a polydopamine intermediate layer on the surface of the membrane through auto-polymerization of dopamine; and finally, firmly loading the graphene oxide nanosheets on the surface of the base membrane by using the intermediate layer to form a graphene oxide functional surface layer, and carrying out vacuum drying to obtain a final product. A three-layer gradient structure of'base membrane-polydopamine middle layer-graphene oxide surface layer 'is constructed, the hydrophilicity of graphene oxide is utilized to form a water membrane on the surface of the membrane, oil drops are repelled, the anti-pollution performance of the membrane is improved, the problem that the coating is easy to fall off is solved by means of the adhesion of polydopamine, and the preparation process is simple and controllable and is suitable for large-scale production.

The invention belongs to the technical field of synthetic leather, and particularly discloses breathable stripping-resistant water-based / solvent-free polyurethane synthetic leather and a preparation method thereof.The synthetic leather comprises base cloth, a solvent-free polyurethane layer and a water-based polyurethane surface layer, and the solvent-free polyurethane layer and the water-based polyurethane surface layer are sequentially arranged on the base cloth; modifying and activating the base cloth by a wide plasma cleaning machine; the solvent-free polyurethane layer slurry is prepared from a carbon dioxide-based polyether type A material prepolymer, a polyether type B material prepolymer, color paste, a dispersing agent, isocyanate modified aerogel and nano filler; the waterborne polyurethane surface layer slurry is prepared from epoxy resin modified carboxylic acid type waterborne polyurethane emulsion neutralized by triethylamine, epoxy modified aerogel, waterborne color paste, a defoaming agent and a thickening agent. The modified aerogel is introduced into the solvent-free polyurethane layer and the waterborne polyurethane surface layer, and oxygen plasma pretreatment activation on the base cloth is cooperated, so that the obtained waterborne / solvent-free polyurethane synthetic leather has an excellent breathable function and high peel strength, and has a wide market prospect.

The invention relates to the technical field of ultrasonic sensors, and discloses a hollow glass bead, a sound matching layer material and a preparation method thereof, and the modified hollow glass bead comprises a surface hydroxylated bead, and a first coating layer and a second coating layer which sequentially coat the surface of the surface hydroxylated bead; the surface hydroxylated microbeads are prepared by performing oxygen plasma activation treatment on hollow glass microbeads, and the first coating layer and the second coating layer are formed by sequentially grafting a silane coupling agent and an acrylic acid maleic anhydride copolymer on the surfaces of the surface hydroxylated microbeads. According to the invention, a double interface layer of'chemical bond anchoring-macromolecular chain winding 'is constructed on the surface of the hollow glass bead, so that the bonding strength and shear strength of the modified hollow glass bead-resin interface can be effectively improved, and the modified hollow glass bead can reduce the addition amount of filler, improve the dispersity of the filler and improve the mechanical property of the filler. Furthermore, the agglomeration phenomenon of the hollow glass beads is reduced, and the sensitivity of the acoustic matching layer material is improved.

The invention belongs to the technical field of bionic cilium sensors, and particularly discloses a magnetic bionic cilium and vesicle complex and a preparation method and application thereof.The preparation method comprises the following steps that S1, a cilium array male mold is prepared; then carrying out oxygen plasma treatment, silanization and curing stabilization; s3, injecting the magnetic composite precursor into a polydimethylsiloxane female die, applying pressure, and striking off; and S4, coating the mold surface with an Ecoflex precursor, performing thermocuring forming, performing magnetization treatment, and performing stripping to obtain the magnetic bionic cilia. According to the magnetic bionic cilia, the vesicle complex and the preparation method and application of the magnetic bionic cilia, the vesicle complex and the preparation method and application of the magnetic bionic cilia, high-magnetic signal output is achieved while the deformability of the cilia is guaranteed, the magnetic bionic cilia is used for non-contact real-time hemodynamic monitoring, meanwhile, specific response release of the vesicle complex is achieved, and a new thought is provided for design of responsive vascular implants.

The invention discloses porous carbon with a gradient structure, a preparation method of the porous carbon and application of the porous carbon in a negative electrode of a lithium ion battery. The porous carbon has a gradient structure with compact micropores on the surface and loose macropores inside. The preparation method of the porous carbon comprises the following steps: carrying out oleophylic modification on SiO2 to obtain hydrophobic SiO2; carrying out hydrophilic coating on NH4Cl to obtain PVP (Polyvinyl Pyrrolidone) coated NH4Cl; the preparation method comprises the following steps: mixing coal pitch, methylbenzene, oleic acid, hydrophobic SiO2 and PVP (at) NH4Cl to form a suspension; preparing a spherical precursor by a micro-fluidic emulsification method; and carbonizing, sequentially carrying out oxygen plasma treatment and HF solution etching, and removing the template to obtain the porous carbon with the gradient structure. The gradient distribution of the template and the pore-forming agent is realized through surface modification difference and a microfluidic technology, the pore structure and the particle size can be accurately regulated and controlled, the process is simple, the compatibility is high, the prepared porous carbon can be used as a substrate for a silicon-carbon composite negative electrode material, the volume expansion of silicon can be effectively buffered, and the service life of the silicon-carbon composite negative electrode material is prolonged. And the first coulombic efficiency, the specific capacity and the cycling stability of the lithium ion battery are improved.

The invention discloses antibacterial and antiskid PU leather and a preparation method and application thereof, and belongs to the technical field of PU leather.The preparation method comprises the steps that a ZIF-8 / g-CNcomposite photocatalyst is obtained through an in-situ growth method, silver-doped nano-hydroxyapatite is prepared through an ion replacement method, the ZIF-8 / g-CNcomposite photocatalyst and the silver-doped nano-hydroxyapatite are compounded through liquid phase adsorption, and the antibacterial and antiskid PU leather is obtained. The preparation method comprises the following steps: preparing composite antibacterial powder, uniformly dispersing the composite powder into acrylamide, Arabic gum and polyethylene glycol methyl ether methacrylate serving as monomers, initiating polymerization to form composite coating slurry, performing oxygen plasma activation on PU leather, blade-coating the composite coating slurry, and curing to obtain the antibacterial antiskid PU leather. The material integrates the functions of self-cleaning, antibiosis, skid resistance and wear resistance.

The invention relates to the technical field of fiber reinforced resin-based composite materials, and discloses a basalt fiber epoxy resin composite material as well as a preparation method and application thereof. Comprising the following steps: carrying out oxygen plasma treatment and dopamine bionic liquid deposition treatment on basalt fibers, dipping the basalt fibers in a mixed coupling agent solution, and coating the basalt fibers with nano TiO2 sol to obtain nano roughened basalt fibers; mixing bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, hyperbranched polyesteramine and ionic liquid modified boron nitride nanosheets to obtain resin A; mixing an epoxy curing agent with a curing accelerator to obtain resin B; and mixing the resin A and the resin B to obtain a mixed material, and infiltrating the nano roughened basalt fibers in the mixed material to obtain the basalt fiber epoxy resin composite material. After the basalt fiber is subjected to bionic multi-stage interface treatment, the basalt fiber is matched with the modified epoxy resin, so that the interface strength, the mechanical property and the weather resistance of the composite material are remarkably improved, and the composite material has a relatively good application scene.

The invention discloses a preparation method of a lithium aluminum titanium phosphate solid electrolyte nano powder material, which comprises the following steps: S1, weighing a lithium source, an aluminum source, a titanium source and a phosphorus source, and preparing a sol precursor; s2, performing microwave treatment to obtain a gelatinous intermediate; s3, carrying out annealing treatment after grinding to obtain nano titanium aluminum lithium phosphate powder; s4, placing the substrate in a plasma enhanced atomic layer deposition reaction cavity, vacuumizing, and introducing plasma activation gas; alternately pulse trimethylaluminum and titanium tetrachloride precursors, and depositing to obtain a gradient oxide intermediate layer; s5, introducing oxygen plasma to oxidize the residual precursor to form a gradient oxide coating layer; and S6, carrying out annealing treatment to obtain the lithium titanium aluminum phosphate solid electrolyte nano-powder material. According to the preparation method disclosed by the invention, the side reaction of the LATP powder and lithium metal is effectively inhibited, the interface stability and the ionic conductivity are improved, and the high-performance requirement of an all-solid-state lithium ion battery on a solid electrolyte material can be met.

To provide a transistor including an oxide semiconductor film with higher field effect mobility and higher reliability.SOLUTION: A semiconductor device includes an oxide semiconductor film. The semiconductor device includes a first insulating film, an oxide semiconductor film on the first insulating film, a second insulating film and a third insulating film on the oxide semiconductor film, and a gate electrode on the second insulating film. In particular, the second insulating film includes a silicon oxynitride film. Because of excess oxygen by an oxygen plasma process, oxygen can be supplied to the oxide semiconductor film efficiently.SELECTED DRAWING: Figure 44

A polyelectrolyte hydrogel coating with strong substrate binding performance and a method of manufacturing the same are provided. The method includes: 1) activating a substrate by applying oxygen plasma; and 2) dissolving a polycationic polymer, a polymeric monomer, a silane coupling agent and an initiator to obtain a precursor solution, vacuumizing the precursor solution to remove air bubbles, applying the vacuumized precursor solution to a surface of the substrate activated by the oxygen plasma, and performing an in-situ polymerization and curing process under nitrogen or rare gas atmosphere. The polymeric monomer includes at least one of: acrylamide, acrylic acid, hydroxyethyl methacrylamide, 2-acrylamido-2-methyl-1-propanesulfonic acid, polyethylene glycol (diol) diacrylate, 2-methacryloxyethylphosphocholine, 3-[[2-(Methacryloyloxy)ethyl]dimethylammonio]propane-1-sulfonate, and 3-[[2-(methacryloyloxy)ethyl]dimethylammonium] propionate. The silane coupling agent has a carbon-carbon double bond functional group.

The application provides a microcapsule, a composite fabric, a preparation method of the composite fabric and a summer quilt. The preparation method of the composite fabric comprises the following steps: A1, treating the top surface and the bottom surface of a moisture-permeable layer by using oxygen plasma; A2, adding microcapsules and a crosslinking agent into water to obtain a sticky liquid; coating the sticky liquid on the bottom surface and the top surface of the moisture-permeable layer in a dotted form, bonding the moisture-permeable layer and a moisture-removing and air-permeable layer by taking the top surface of the moisture-permeable layer as a bonding surface, bonding the moisture-permeable layer and a skin-friendly cool layer by taking the bottom surface of the moisture-permeable layer as a bonding surface, drying and hot pressing; the microcapsule comprises a core material and a shell covering the outside of the core material, the core material comprises a glue, and the glue is selected from glue A or glue B or a combination of the two, the glue A is a solvent-free moisture curing reaction type polyurethane hot melt adhesive, and the glue B is an acrylate with an epoxy group and / or a urethane group. The application can guarantee the moisture permeability and air permeability of the composite fabric.

To provide a method of manufacturing a substrate structure capable of suppressing peeling of a protective film.SOLUTION: A method of manufacturing a substrate structure including an organic film and a silicon substrate, the method comprising: performing an ashing process on the substrate structure at a first temperature while applying a first bias; performing an ashing process on the substrate structure subjected to the first ashing process at a second temperature higher than the first temperature while applying a second bias lower than the first bias or without applying a bias; and forming a protective film on the substrate structure subjected to the second ashing process.SELECTED DRAWING: Figure 2

This invention belongs to the field of electrocatalytic materials and water electrolysis for hydrogen production, and discloses a Ni-RuO x Modified catalytic materials and their preparation methods, OER catalytic applications, and water electrolysis devices are disclosed. The preparation method of the catalytic material involves treating a mixture containing a ruthenium source, a nickel source, and potassium bromide with oxygen plasma to obtain a modified Ni-RuO2 precursor. The oxygen plasma treatment process is carried out at a temperature of 150-200℃ and a power of 100-150 W. The modified Ni-RuO2 precursor is then thermally annealed under a protective atmosphere at a temperature of 200-300℃ to obtain the Ni-RuO2 precursor. x Modified catalytic materials. This invention demonstrates that the preparation method described herein can achieve in-situ uniform doping of nickel in the RuO2 lattice, precise control of oxygen vacancies, and directional construction of discrete nanoparticles. This invention also demonstrates that the preparation method can significantly improve the OER performance of the prepared materials.

The application relates to the field of optical films, in particular to a preparation method of an optical diffusion film. The preparation method of the optical diffusion film comprises the following steps: uniformly mixing a curing agent with polydimethylsiloxane, curing, then performing oxygen plasma treatment and room temperature aging treatment to obtain a polydimethylsiloxane flat plate; dissolving PET particles and PMMA particles in a solvent to obtain a polymer solution; placing the polydimethylsiloxane flat plate above the polymer solution and standing to obtain the optical diffusion film. In the application, PMMA is used as a high glass transition temperature component to be blended with PET, the overall glass transition temperature of the blended system is improved, and the practicability of the optical diffusion film in a high-temperature environment is improved; strong scattering is provided by the difference between the refractive indexes of air holes and a polymer phase, a refractive index gradient is formed by using the refractive index difference between PET and PMMA, a secondary scattering interface is formed, high haze is ensured, light absorption is reduced, and high transmittance is maintained.

A hydrogen evolution electrode preparation method based on a three-period minimal curved surface structure belongs to the technical field of new energy electrolytic hydrogen production and fluid transportation, and comprises the following steps: constructing a three-dimensional model of the required three-period minimal curved surface structure; performing image slicing processing on the three-dimensional model by using slicing software; printing a required three-period minimal curved surface structure by using a plane projection micro-stereolithography 3D printer; a nanometer ultraviolet lamp is adopted to circularly irradiate the three-period extremely-small curved surface structure; soaking in a sulfuric acid solution and carrying out ultrasonic oscillation; carrying out vacuum drying and carrying out oxygen plasma hydrophilic treatment; depositing a nickel-based compact conductive layer on the three-period minimal curved surface structure by using chemical deposition; depositing a nickel-iron alloy catalyst on the three-period minimal curved surface structure of the nickel substrate by using electro-deposition; and carrying out ultrasonic oscillation with ethanol and vacuum drying. According to the application, collaborative design of catalyst distribution and a macro-microstructure is realized, and a new way is provided for preparation of a high-performance water electrolysis hydrogen production electrode.

The application belongs to the technical field of lithium ion battery cathode material, and provides a kind of plasma assisted in-situ construction lithium ion conductor coated high nickel ternary cathode material and its preparation method and application.The application forms oxygen plasma active group by high pressure ionization oxygen, the active group generated interacts with the gas generated by the thermal decomposition of the added solid source, can consume high nickel ternary cathode surface residual alkali and form a thin, continuous and dense lithium ion conductor coating layer on the surface of high nickel ternary cathode material in-situ, which helps to promote the development of high nickel ternary cathode material of lithium ion battery.The high nickel ternary cathode material prepared by the application shows high specific capacity, excellent cycle stability, rate performance and first charge-discharge efficiency.At the same time, the preparation method provided by the application is simple, fast, efficient and convenient, and the cost is low, which can effectively remove the residual alkali on the surface of high nickel ternary cathode material and improve the structural stability of high nickel ternary cathode material.

The application discloses a kind of pH-sensitive spectrum response film online monitoring methods based on chemical crosslinking.It is technical solution: first polyvinyl alcohol is dissolved in water, then with cellulose solution, pH indicator is mixed according to certain proportion, prepare pH-sensitive original solution, then it is drop-coated to amino glass substrate and incubated, prepare pH-sensitive substrate.Using etching or molding method to make cover piece with microchannel, it is bonded after being treated with oxygen plasma with pH-sensitive substrate, obtain pH microfluidic chip.And it is used in combination with self-built integrated pH sensing system.Self-built integrated pH sensing system includes light source (1), pH sensing chip (2), spectrometer or colorimeter (3) and host computer (4).This pH microfluidic chip online monitoring system based on chemical crosslinking has long service life, wide pH response range, strong anti-interference ability, good stability and other advantages, and can realize online, real-time monitoring of pH.

The invention relates to a wear-resistant HDPE (high-density polyethylene) pipe and a preparation method thereof.The wear-resistant pipe comprises an inner-layer pipe and an outer-layer pipe, the inner-layer pipe contains high-density polyethylene resin, pretreated aluminum oxide filler and antibacterial particles, and the pretreatment process comprises oxygen plasma treatment, metal organic framework coating treatment and titanate coupling agent treatment; the filler dispersity and the interface bonding strength are effectively improved. The preparation method comprises the steps of raw material mixing, extrusion molding, foaming agent spraying, outer layer covering and cooling shaping. By optimizing filler pretreatment and the pipe structure, the wear resistance, pressure resistance, impact strength and environmental adaptability of the pipe are remarkably improved, and the pipe is suitable for harsh working conditions and water purification pipes.

The invention discloses a method for improving the forming corrosion consistency of a HgCdTe chip ohmic hole and a metal electrode, which comprises the following steps of: adding an oxygen plasma treatment step between dry etching and wet etching to form hydrophilic functional groups such as hydroxyl (-OH) and carboxyl (-COOH) on the surfaces of materials such as photoresist and HgCdTe, so that the surface hydrophilicity is enhanced; therefore, the infiltration effect of the corrosive liquid is enhanced. When the dielectric film or the tellurium-cadmium-mercury is corroded, the method effectively avoids bubble holes caused by incomplete infiltration of the surface during wet etching, so that the corrosive liquid enters the photoetching pattern to be fully contacted and reacted with the dielectric film or the photosensitive layer. When metal is corroded, the wettability of the corrosive liquid and the metal can be improved, and the corrosion capability and the corrosion uniformity of the corrosive liquid are improved. According to the method, the wettability of the tellurium-cadmium-mercury material, the dielectric film and the photoresist surface in the corrosion process can be effectively improved, and the problems of bubbles, incomplete corrosion and the like on the surface and in a photoetching pattern in the wet corrosion process are solved.

The invention relates to the technical field of microelectronic manufacturing, and discloses a preparation method and a transfer method of a bearing support plate for transferring a miniature LED chip, and the preparation method comprises the steps: carrying out the cleaning and oxygen plasma activation of a bearing support plate base material; a five-layer structure composite membrane material is prepared by adopting a roller blade coating process, and the composite membrane material comprises a PET base material layer, and a first silica gel layer and a second silica gel layer which are respectively coated on two sides of the PET base material layer; after curing, the second silica gel layer side of the composite membrane material is attached to the bearing carrier plate base material; according to the transferring method, chip transferring is achieved through the steps of contact attaching, laser stripping and thermocompression bonding by means of the bearing carrier plate. According to the invention, the thickness uniformity of an adhesive layer is improved, precise adhesive force regulation and control of chip picking and releasing are realized, the high-temperature process of a traditional spin coating process on a carrier plate is avoided, the problems of chip fragmentation, displacement and the like are effectively solved, and the yield, efficiency and precision of Micro LED mass transfer are greatly improved.