30 results about "Microplasma" patented technology

The present invention discloses a liquid film reaction device and method based on dielectric barrier microplasma discharge. The device includes a power supply, a dielectric barrier microdischarge device, and a liquid input system. The dielectric barrier microdischarge device includes an insulating medium, a high-voltage electrode, and a ground electrode, with the power supply connected to the high-voltage electrode and the ground electrode, respectively. The liquid input system includes a liquid container and a water pipe, with the liquid container connected to the water inlet of the dielectric barrier microdischarge device via the water pipe. The device can perform liquid film dielectric barrier microplasma discharge at room temperature and pressure using common gases, air, and water as raw materials, achieving nitrogen / carbon fixation and organic wastewater degradation under mild conditions. The device has a simple structure, is compact and portable, uses cheap gas, has low technical costs, and has the characteristics of fast reaction speed and high energy efficiency. It can degrade organic wastewater and utilize the products of the nitrogen / carbon fixation process for drip irrigation of crops, providing carbon, nitrogen, and other elements to promote crop growth.

The utility model discloses a portable SO3 < 2-> / S < 2-> form analysis device in an environmental water sample. The device comprises a chemical gas phase generation assembly, a micro-plasma reactor and a visual colorimetric detector, the chemical gas phase generation assembly comprises a reaction bottle with an open end and a cover body covering the open end of the reaction bottle in a sealing manner, the reaction bottle is provided with an argon introducing pipe and a gas phase discharging pipe, and the other end of the gas phase discharging pipe is connected to the gas inlet end of the micro-plasma reactor; the exhaust end of the micro-plasma reactor is connected with an exhaust pipe, and the other end of the exhaust pipe is connected to the air inlet end of the visual colorimetric detector; the visible colorimetric detector comprises a transparent colorimetric reaction chamber, and a fluorescein derivative which is subjected to a color fading reaction with SO2 is arranged in the transparent colorimetric reaction chamber. The portable SO3 < 2-> / S < 2-> morphological analysis device in the environmental water sample can be used for field detection, and is simple and quick to operate.

A microplasma catalytic reactor for treating ambient air by decomposing VOC in the ambient air. The reactor comprises: a first electrode member comprising a conductive core and a dielectric coating; and a second electrode member disposed relative to the first electrode member so as to generate a plasma between the first and second electrode members upon application of a plasma generating voltage between the first and second electrode members such that, in use, VOC in ambient air in the reactor is decomposed to form a VOC decomposition product, and forming a plasma by-product. The dielectric coating further includes a catalyst that catalyzes the decomposition of one or more of: VOC; a VOC decomposition product; and a plasma by-product.

An in-chamber plasma source in a deposition reactor system includes an array of microcavity or microchannel plasma devices having a first electrode and a second electrode isolated from plasma in microcavities or microchannels. An inlet provides connection to deposition precursor. A region interacts deposition precursor with plasma. An outlet directs precursor dissociated with the plasma onto a substrate for deposition. A reactor system includes a substrate holder across from the outlet, a chamber enclosing the in-chamber plasma source and the substrate holder, an exhaust from the chamber, and conduit supplying precursors from sources or bubblers to the inlet. A reactor system can conduct plasma enhanced atomic layer deposition at high pressures and is capable of forming a complete layer in a single cycle.

The application discloses a kind of metal organic framework materials, preparation method and its application in photodynamic sterilization, it is related to biological medicine technical field, preparation method includes, and it is prepared to A solution by dissolving with the preparation of mid-four (4-carboxyl phenyl) porphyrin is added N,N-dimethylformamide;Scandium chloride hexahydrate is dissolved in ultrapure water, and B solution is prepared;The A solution and B solution prepared are mixed, and are treated with ultrasound, so that two kinds of solutions are fully mixed to prepare mixed solution;The mixed solution is treated with microplasma;After the mixed solution treated with microplasma is centrifuged, and metal organic framework solid is obtained.The application uses microplasma treatment to provide a large number of high-energy electrons in discharge process, promotes the rapid deprotonation of organic linker, has the advantages such as small volume, low energy consumption, simple and fast and reagent green.

The invention discloses a coaxial dielectric barrier discharge micro-plasma multi-dimensional element compound detection device which comprises a capillary column assembly and a capillary column interface assembly, the capillary column assembly is provided with a gas transmission channel extending in the axial direction of the capillary column assembly, one end of the capillary column assembly is a capillary gas inlet end, and the other end of the capillary column assembly is connected to the capillary column interface assembly. A conical contraction connector is arranged in the capillary column connector assembly, and the conical contraction connector is gradually transited from the large section to the small section in the gas flowing direction. The plasma discharge cavity is communicated with the capillary column interface assembly and extends along the axial direction; and a first electrode and a second electrode are wound outside the plasma discharge cavity. And a medium tube is arranged between the first electrode and the second electrode. And the first electrode and the second electrode are electrically connected with a high-voltage converter power supply. One end of the plasma discharge cavity away from the capillary column interface assembly is provided with a plasma lighting window; an optical detection assembly is arranged on the outer side of the plasma discharge cavity.

This invention relates to a hydride generation gaseous sample introduction method and apparatus for heavy metal element determination in conjunction with a liquid cathode glow discharge-atomic emission spectrometer, belonging to the field of atomic spectroscopy metal element analysis technology. This invention uses chemically generated carbon dioxide gas as a carrier gas, which is then used as the atmosphere gas in the liquid cathode glow discharge to ionize and generate micro-plasma. The chemical hydride generation method converts the applicable analyte element into a hydride, which is then carried into the micro-plasma by the carbon dioxide carrier gas, atomized, and excited to generate an emission spectrum.

A fabrication tool has at least one flat lamp photon source, or an array of flat lamps, that serve to non-thermally ablate polymer material from a surface. No photoresist is required and the desired photoablated pattern is determined by inserting a photolithographic mask between the lamp(s) and the surface to be processed. Methods of the invention pattern organic polymer and can pattern a substrate using a pattern established in an organic polymer layer on the substrate, and can also deposit materials in the pattern by breaking bonds in deposition precursors with photons from the microplasma array. Another method converts organic polymer material to have a hydrophylic surface. A tool of the invention can have width and depth comparable to a typical paperback book and a height comparable to a coffee cup.

A device may include a substrate having formed thereon a capping structure forming an enclosed volume filled with a gas other than ambient air. A device may include a first electrode and a second electrode having respective exposed electrode surfaces exposed to the enclosed volume, wherein the first electrode and the second electrode are configured to strike and sustain a plasma in the enclosed volume in response to being externally biased, wherein one or both of the first and second electrodes comprise a conductive beam structure extending lengthwise in a lateral direction over the substrate.

The application relates to the field of molten salt electrochemistry, in particular to application of normal-pressure micro-plasma discharge in preparation of nano uranium dioxide particles. The normal-pressure plasma discharge can be used for synthesizing nano uranium dioxide particles with high crystallinity in molten salt, the prepared uranium dioxide product has good crystallinity, high purity and excellent oxidation resistance, and the product particle size is between 20-200 nm.

The invention discloses a manufacturing method for inhibiting generation of burrs on a pole piece and the pole piece. The manufacturing method comprises the following steps: S1, preparing slurry, and adding a self-repairing material; s2, coating: carrying out biaxial orientation stretching treatment on the current collector; s3, drying, wherein three-stage temperature control is adopted; s4, calendering, wherein asymmetric rolling is adopted; s5, cutting is conducted, ultrasonic softening pretreatment is conducted firstly, and a composite cutting technology is adopted; and S6, edge treatment is carried out, and a micro-plasma polishing technology is adopted. Microcracks generated in the cutting process can be repaired through a self-repairing material adding technology; the biaxial orientation treatment of the current collector improves the mechanical property and isotropy of the current collector; the ultrasonic softening pretreatment reduces the cutting resistance and reduces the generation of burrs; and edge burrs are accurately removed through micro-plasma polishing. According to the invention, the burr height and density of the pole piece are obviously reduced, the safety and cycle performance of the battery are improved, and the problems of battery short circuit and safety risk caused by pole piece burrs are solved.

The application provides a system and method for quantitatively determining nanometer plastics in an aqueous solution, and belongs to the technical field of environmental analysis and detection. The system comprises: a carrier gas supply unit for providing carrier gas and regulating the flow rate of the carrier gas, a programmed heat treatment unit, a three-way valve, a drying unit, a microplasma excitation and spectrum detection unit, a data processing unit and a control unit. The entire system is built based on miniaturized electrothermal evaporation and microplasma excitation technology, has the characteristics of low energy consumption and compact structure, has the potential to develop into a field quantitative screening device, and provides a new practical technical scheme for accurate quantitative monitoring of nanometer plastics in environmental water.

Disclosed is a modular commercial food storage, sterilization, and drinking water supply system. The system comprises a food storage and drinking water supply apparatus, a user terminal, and an administrator terminal. The food storage and drinking water supply apparatus includes a solar power unit installed on an upper portion of the apparatus, an energy storage unit configured to store electric power, an ozone generation unit configured to receive power stored in the energy storage unit and generate ozone to be provided to a drinking water purification unit and a food processing management unit through an advanced oxidation process using microplasma, a food processing management unit configured to sterilize food using ozone generated from the ozone generation unit and deliver ozone into a food storage space, and a drinking water purification unit configured to purify drinking water by receiving ozone generated from the ozone generation unit.

The invention belongs to the field of portable and trace detection of pollutants, and particularly relates to an aM-level detection method of perfluorooctanoic acid. The method comprises the following steps: firstly, triggering enzyme-free catalysis hairpin assembly by using a PFOA aptamer to generate double-stranded DNA to activate a CRISPR-Cas12a system, so as to realize target cyclic amplification and signal transduction; a DNA signal is converted into a copper element signal through a gold-core copper-shell nanoparticle labeling strategy, and multi-stage signal amplification is achieved; and finally, quantifying a Cu signal at 327 nm by adopting a capillary tube-micro plasma emission spectrometer driven by a self-developed lithium battery. The detection limit of the platform to PFOA reaches 0.50 aM, which is 4 orders of magnitude lower than the American EPA standard; the linear range spans 6 orders of magnitude (2.5 aM-2.5 pM); the standard addition recovery rate of 6 kinds of complex environment water samples (landfill leachate, breeding wastewater and the like) and 3 kinds of dairy products is 95.54%-108.63% (RSDlt; 5%).

A method for manufacturing a distributed Bragg reflector is provided. The distributed Bragg reflector is applied to a 1550 nm vertical-cavity surface-emitting laser, which structurally includes a top distributed Bragg reflector, a bottom distributed Bragg reflector, and a vertical cavity (including a P-type and an N-type electrode) and a multiple quantum well light-emitting layer that are positioned therebetween. An optical multilayer film of the distributed Bragg reflector is formed by sputtering, and includes silicon layers and silicon dioxide layers alternately stacked to each other. The silicon dioxide layers are produced by a process of nano-sputtering and micro-plasma oxidation. A reflectance of the bottom distributed Bragg reflector at 1,550 nm is greater than 99.9%, and a reflectance of the top distributed Bragg reflector at 1,550 nm is controlled to be between 95% and 99%, so that basic physical / optical requirements for forming a resonant laser can be improved.

The application provides a kind of integrated in-situ internal reference, nano probe of dosing and fixed point recording and preparation method, and the preparation method comprises the following steps: inserting a metal wire into the middle of the length direction of one channel of a double-channel glass tube, heating and melting, and then drawing a double-channel nano tip; sputtering a metal conductive layer on the surface of the double-channel nano tip, depositing a functional layer, connecting the functional layer outer surface and the metal channel lead, and depositing a protective layer; using atmospheric pressure micro-plasma jet to controllably remove the protective layer of the tip, so that the functional layer is slightly exposed; using micro-plasma jet to remove the exposed functional layer tip, so that the metal channel and the dosing channel are exposed; placing the double-channel nano tip in a pre-set solution to form an internal reference electrode in the metal channel. The probe prepared by the application can simultaneously realize in-situ internal reference, drug delivery and reliable fixed point recording of specific signals in a single cell, which is of great significance for accurate diagnosis, real-time monitoring and in-situ treatment of diseases.

The invention discloses a 3D printing pump-free sample injection point discharge atomic emission spectrum analysis device and method for detecting arsenic, and belongs to the technical field of atomic emission spectrum analysis. Comprising a 3D printing integrated device, an external gas path system and a spectrum detection system, the 3D printing integrated device comprises a 3D printing module, a quartz glass sheet, a quartz capillary tube, two tungsten filament electrodes and a microsyringe; the external gas path system comprises a small argon steel cylinder, two argon pipelines, a gas flow meter and a trace gas flow meter; the spectrum detection system comprises an optical fiber and a small CCD spectrometer. The method comprises the following steps: injecting an arsenic-containing solution sample into a reaction chamber of a 3D printing device by using a microsyringe, converting the arsenic-containing solution sample into a gaseous analyte through hydride generation, blowing the gaseous analyte into a discharge chamber by argon, exciting an atomic emission spectrum of arsenic by using micro plasma, radially collecting a spectral signal from the outside of a quartz capillary by using a bare optical fiber, and transmitting the spectral signal to a CCD (Charge Coupled Device); and finally, the concentration of the arsenic in the sample can be obtained through calculation. The method has the characteristics of high excitation efficiency, strong anti-interference capability, low cost, open source sharing, environmental friendliness and the like.

The present application relates to the technical field of pesticide detection, and provides a method for determining dithiocarbamate pesticides based on a tandem microplasma-emission spectrum, which comprises the following steps: using stannous chloride-hydrochloric acid (SnCl2-HCl) solution as a reducing agent, separating DTCs pesticides by liquid chromatography (LC), exciting the SnCl2-HCl system by a first-stage liquid electrode glow discharge (LEGD) microplasma to reduce the DTCs pesticides into carbon disulfide (CS2) in real time, exciting CS2 to emit a spectrum by a second-stage dielectric barrier discharge (DBD) microplasma, thereby forming a LEGD reduction-DBD determination tandem microplasma system, and achieving the detection of dithiocarbamate pesticides, wherein the method has the advantages of real-time, accuracy, rapidity, simplicity, and the ability to analyze each subclass of DTCs pesticides, and meets the requirement of rapidly determining dithiocarbamate pesticide residues in fruits and vegetables in a short period of time.

This invention provides a low-temperature micro-plasma jet generator and its preparation method, comprising: an ultrasonic jet generator for generating ultrasonic jets; and a micro-plasma generator for generating plasma; wherein the ultrasonic jet generator and the micro-plasma generator are integrated into a single, sheet-like structure. The ultrasonic jet generator is located in the middle of the micro-plasma generator, effectively enhancing the transverse wave effect of negative oxygen ions and ozone waveguides through the ultrasonic jet effect. This invention integrates the ultrasonic jet effect and the generation of low-temperature micro-plasma, effectively solving the problem of low transverse waveguide efficiency for the propagation of low-temperature negative oxygen ions and ozone. It can be used in plasma disinfection and sterilization scenarios, providing an effective approach for the miniaturized integrated manufacturing of related products.

The invention relates to a triboelectric reactor device with microplasma discharge for the production of hydrogen from an aqueous electrolyte. The device comprises a translucent outer body and a dielectric inner body that define an intermediate cavity containing the electrolyte and an internal cavity. A triboelectric strip arranged on the outer surface of the inner body, with alternating zones of electronegative material and exposed substrate, generates electrical charge through solid-liquid interaction. This charge, optionally enhanced by a pyroelectric element subjected to thermal variations, accumulates in a multilayer capacitive architecture. Upon exceeding a threshold, a dielectric barrier microplasma discharge is generated between an emitting electrode tip and the inner body, producing reactive species and ultraviolet radiation that promote the dissociation of water into hydrogen.The system can operate autonomously without an external power source and can simultaneously generate plasma-activated water as a byproduct.

The present invention is related to a production method of porous materials comprising steps of: providing a micro-plasma system, which includes an anode, a cathode, and a reaction solution. The said anode is at least partially immersed in the reaction solution, while the cathode is a tube with its opening positioned near and above the reaction solution with a gas introducing to the opening. After applying a current to the micro-plasma system, a micro-plasma reaction occurs, resulting in the formation of a porous material in the reaction solution. The aforementioned reaction solution contains an amine precursor, an aldehyde precursor, and an electrolyte, and especially does not include any toxic or volatile organic solvents. The present invention presents a novel method for producing porous materials with simple and rapid steps without the need for volatile or toxic organic solvents, making the process more environmental friendly, cost-effective and high yielding rate.

The invention discloses a grounding-free anti-backflow electrostatic charge generator circuit and an electrostatic charge generator, the grounding-free anti-backflow electrostatic charge generator circuit comprises a wireless inductor L1, the wireless inductor L1 couples a signal to a high-voltage transformer T1 and a high-voltage transformer T2 through a coupling coil, and an AC signal generated by the high-voltage transformer T1 enters a first high-voltage generator module and completes DC conversion; an alternating current signal output by the high-voltage transformer T2 enters the second high-voltage generator module, the first high-voltage generator module and the second high-voltage generator module comprise a plurality of groups of bridge rectifier circuits which are connected in parallel, and two ends of the bridge rectifier circuit connected with the high-voltage transformer T2 are led out through wires and are exposed in the air. On the basis of the micro plasma technology, plasma and voltage difference are released through the second high-voltage generator module, a charge release field and voltage difference which do not need to be generated by a ground wire are provided, the first high-voltage generator module has rated voltage difference and charge release under the condition that the first high-voltage generator module does not need to be grounded, and a high-resistance loop is formed by the first high-voltage generator module and air.

The invention discloses an atomic fluorescence and micro-plasma emission spectrum all-in-one machine detection system, which relates to the technical field of atomic spectrum application, and comprises a sample introduction system, a data processing system, a hydride reaction system, an atomization system and a micro-plasma excitation device, the sample introduction system is connected with the atomization system through the hydride reaction system, a reducing agent and a sample enter the atomization system through the sample introduction system and the hydride reaction system to complete atomization of elements to be detected, and the atomic fluorescence detection system completes detection of a fluorescence spectrum; and the micro-plasma excitation device is connected with the sampling system, the micro-plasma excitation power supply and the emission spectrum detection system. The atomic fluorescence and the emission spectrum can be simultaneously measured by one instrument, the application of direct sample injection detection of a metal solution can be realized while heavy metals in a hydride generation atomic fluorescence test solution can be met, and respective measurement can be performed according to actual use requirements, so that the instrument cost and the space are effectively saved.

The present invention relates to a microplasma AOP water treatment apparatus based on a wave-type capacitive deionization-based magnetic field and electric field, comprising: an ozone generator that generates ozone using microplasma; an inlet pipe that receives raw water, is connected to an ozone transfer pipe to receive ozone and transfer the raw water and ozone to a primary mixer pipe; the ozone transfer pipe that is connected to the ozone generator and the inlet pipe to transfer the ozone generated by the ozone generator to the inlet pipe; a primary mixer pipe that dissolves ozone supplied from the inlet pipe into raw water to generate primary treated water; a first connection pipe that transfers the primary treated water generated in the primary mixer pipe to an electromagnetic field generator; the electromagnetic field generator that generates a wave-type electric field and a magnetic field with a hydrodynamic structure to apply an electromagnetic field to the primary treated water supplied from the first connection pipe to allow an oxidation reaction to take place; a second connection pipe through which the electromagnetic field generator transfers, to a secondary mixer pipe, the primary treated water that has undergone the oxidation reaction; the secondary mixer that generates secondary treated water by promoting ozone dissolution of the primary treated water supplied from the second connection pipe; and an outlet pipe that discharges the secondary treated water for which dissolution has been completed in the secondary mixer to the outside.

This invention relates to the fields of analytical detection and online solid-phase extraction technology, specifically to a rapid detection method for trace plasma samples used in pharmacokinetic studies. The method first measures the empty baseline pressure; after injection, it calculates the net sample pressure and total resistance integral in real time, and identifies the transition point from injection to cleaning to lock the fluid dynamics boundary parameters; during the cleaning phase, it calculates the measured pressure decay rate and extrapolates the theoretical pressure decay rate under ideal emptying conditions, uses the total resistance integral to compensate for viscosity at the measured rate, and then obtains the flow hysteresis ratio characterizing the sample matrix retention effect based on both; finally, it uses the flow hysteresis ratio to adaptively correct a standard threshold to obtain a target threshold, and performs flow path switching when the measured rate reaches the target. This invention effectively decouples sample viscosity from adsorption characteristics, enabling adaptive adjustment of the cleaning time based on real-time sample kinetic feedback, completely eliminating matrix residue contamination while ensuring the recovery rate of polar drugs.

The invention discloses a series micro-plasma source and an atomic emission spectrum analysis device and method. An excitation source is composed of a coaxial dielectric barrier discharge body and a point discharge body which are coaxially arranged in series; point discharge micro-plasma is modulated through dielectric barrier discharge jet, and a point discharge atmosphere is activated to enhance plasma characteristics and excitation capability of an excitation source. According to the atomic emission spectrum analysis device, an excitation source and a steam sampling mode are combined, sample steam is completely introduced into an effective discharge area through a dielectric barrier discharge hollow inner electrode to be fully atomized / excited, characteristic spectrum response of elements to be detected is generated, and a final atomic emission spectrum signal is obtained after the characteristic spectrum response is collected by a small CCD optical fiber spectrometer. The excitation source and the analysis device and method thereof have the characteristics of strong excitation capability, high excitation efficiency, strong anti-interference capability and the like, are combined with the advantages of miniaturization, low power consumption, easiness in operation and the like, and have a good application prospect in field analysis of diversified scenes.

The invention discloses a uranium oxide molten salt electrolytic reduction and molten salt spectrum online analysis method and device based on a micro-plasma anode array. The device comprises a micro-plasma anode array, a high-voltage direct-current power supply, a gas control system and a spectrum collection device. According to the method, the micro-plasma array is creatively used as an electrolytic anode and a spectrum excitation source at the same time, the atomic emission spectrum of the molten salt can be excited and collected in situ while efficient electrolytic reduction of uranium oxide such as uranium dioxide is achieved to prepare metal uranium, and therefore element components such as cesium in the molten salt can be monitored online in real time. The device solves the industrial problems that a traditional anode is easy to corrode and fused salt components are difficult to analyze in situ, has the advantages of being high in corrosion resistance, good in stability, dual-purpose and sensitive and efficient in analysis, and has wide application prospects in the field of nuclear fuel dry post-treatment.

The invention provides a three-dimensional enhanced SCGD-OES device and a heavy metal detection method, and relates to the technical field of spectrum detection and analysis. A solution cathode unit, a main discharge anode unit and a multi-point discharge enhancement unit are arranged in the excitation chamber; and the multi-point discharge enhancement unit comprises at least two pairs of point discharge electrodes which are arranged in a spatially crossed manner, are positioned below the main discharge channel and are used for generating point discharge micro-plasmas which are spatially coupled with the main discharge channel, so that a three-dimensional synergistic discharge region is formed near a solution interface. The three-dimensional structure expands an effective discharge area, enhances the interaction between plasma and a solution, and improves the atomization and excitation efficiency of an analyte. The emission signal intensity and the detection sensitivity of heavy metal elements are greatly improved, the detection limit is as low as 0.06-1.90 mu g L <-1 >, and the device is compact in structure, good in stability and suitable for on-site, rapid and multi-element simultaneous detection of trace heavy metal in complex samples such as environmental water samples and food.

The invention relates to the technical field of micro-plasma emission spectrum detection, in particular to a micro-plasma emission spectrum detection device which comprises a sample injection system and a detection system. The sample introduction system consists of an electric heating evaporation sample introduction pipe and a micro plasma reaction pipe which are communicated through a gas homogenization treatment pipeline. The turbulent flow mixing pipeline is connected with the tail end of the electric heating evaporation sample injection pipe, the outer side of the turbulent flow mixing pipeline is sleeved with the mixing regulation and control mechanism, and the turbulent flow mixing pipeline and the mixing regulation and control mechanism cooperate to realize rapid homogenization of gas; the connecting pipeline is fixedly connected with the tail end of the turbulence mixing pipeline, the outer side of the connecting pipeline is connected with the angle adjusting frame, the micro-plasma reaction tube is sleeved in the frame to be communicated with the connecting pipeline, the connecting angle of the two tubes in different detection modes can be adjusted through the angle adjusting frame and the micro-plasma reaction tube, various detection requirements are met, the application range of the device is effectively widened, and convenience and practicability are achieved.