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54 results about "Pulse laser irradiation" patented technology
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Method and apparatus for nanometer-scale focusing and patterning of ultra-low emittance, multi-MeV proton and ion beams from a laser ion diode
InactiveUS6852985B2Stability-of-path spectrometersBeam/ray focussing/reflecting arrangementsLow emittanceGrating
Methods and apparatus for focusing proton and ion beams within the profile of the beam envelope of an ultra-low emittance, charge neutralized emission to create a pattern without focusing the entire beam envelope or rastering. In one implementation, a method for use with laser accelerated ion beams comprises the steps: irradiating a surface of a target with pulsed laser irradiation to produce an electron plasma emission on a non-irradiated surface of the target, the electron plasma emission producing an ion beam emission on the non-irradiated surface, the ion beam emission having a beam envelope; and focusing ions of the ion beam emission into a plurality of component beams within the beam envelope as a result of the shape of the non-irradiated surface of the target.
Owner:GENERAL ATOMICS
Optical component and method of manufacture of optical component
InactiveUS7405883B2Easy to manufactureIncrease freedomOptical fibre with graded refractive index core/claddingDiffusing elementsLow-pass filterRefractive index
An optical component or optical low-pass filter has two or more regions demarcated by differences in refractive indexes, in which a region having a refractive index different from the refractive index of the continuous region with the largest volume among the two or more regions is formed in the interior of a transparent material. This optical component or optical low-pass filter has regions with different refractive indexes formed in the interior by pulsed laser irradiation or focused irradiation of the transparent material.
Owner:OHARA
Semitransparent medium radiation characteristic measuring method based on pulse laser irradiation
ActiveCN103472036ASimple setting with few parametersHigh speedScattering properties measurementsTransmissivity measurementsBlack bodyLaser light
The invention relates to a semitransparent medium radiation characteristic measuring method based on pulse laser irradiation. The problem that an existing semitransparent medium radiation parameter measuring method based on transmission and reflection radiation signal measuring is complex, low in speed and bad in accuracy is solved. A laser light source irradiates the surface of one side of a semitransparent medium to be measured, black body coating layers are evenly arranged on the two sides of the semitransparent medium to be measured in a coating mode, and on the surface of one side of the semitransparent medium with the black body coating layers evenly coated, a thermocouple thermodetector is used for measuring and recording changing of temperature of the two surfaces of the medium along with time. According to the temperature on the two sides changing along with time, and the absorbing coefficient and the scattering coefficient of the semitransparent medium to be measured are obtained through an inverse problem algorithm. The semitransparent medium radiation characteristic measuring method is suitable for a plurality of fields such as aerospace, military, energy, chemical engineering, biology medical treatment and atmospheric sciences.
Owner:HARBIN INST OF TECH
SnO2/graphene composite material as well as preparation method and application thereof
InactiveCN111640925AHigh reactivityLarge specific surface areaNegative electrodesSecondary cellsMetallic foilFreeze-drying
The invention discloses a SnO2 / graphene composite material as well as a preparation method and application thereof, and belongs to the technical field of new energy materials. The preparation method comprises the steps of taking a metal Sn foil as a target material and deionized water as a solvent, and preparing a SnOx colloidal solution by adopting a liquid-phase pulse laser irradiation technology; and dropwise adding the SnOx colloidal solution into the graphene oxide solution, uniformly mixing and dispersing, carrying out hydrothermal reaction, and carrying out freeze drying on the productto obtain a SnO2 / graphene composite material. According to the SnO2 / graphene composite material prepared by the invention, SnOx and graphene oxide are subjected to an in-situ oxidation-reduction reaction in a hydrothermal process, so that uniform and tight anchoring of covalent bonding of ultrafine SnO2 quantum dots on a reduced graphene oxide lamellar wall is realized; and the porous structure ofthe reduced graphene oxide can also be maintained when SnO2 quantum dots are highly loaded.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Method for improving solar cell efficiency and preparing high-efficiency solar cell
InactiveCN102280526AImprove junction characteristicsImprove efficiencyFinal product manufactureLaser beam welding apparatusPulse laser irradiationSemiconductor
The invention discloses a method for improving the efficiency of a solar cell. The method is to irradiate the doped region of the solar cell with a pulsed laser, so that the impurities in the doped region form supersaturated replacement doping and are activated to reduce the gap The amount of doping can improve the quality of the semiconductor junction, reduce the recombination of carriers, increase the short-circuit current and open-circuit voltage, and finally achieve the purpose of improving the efficiency of solar cells.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Optical component and method of manufacture of optical component
InactiveUS20060119956A1Easy to manufactureIncrease freedomOptical fibre with graded refractive index core/claddingDiffusing elementsLow-pass filterRefractive index
An optical component or optical low-pass filter has two or more regions demarcated by differences in refractive indexes, in which a region having a refractive index different from the refractive index of the continuous region with the largest volume among the two or more regions is formed in the interior of a transparent material. This optical component or optical low-pass filter has regions with different refractive indexes formed in the interior by pulsed laser irradiation or focused irradiation of the transparent material.
Owner:OHARA
Method for regulating and controlling oxygen defects of cerium dioxide nano material by pulse laser irradiation in liquid phase
ActiveCN111003724AMild conditionsEfficient and fast regulation processMaterial nanotechnologyCerium oxides/hydroxidesFreeze-dryingCerium(IV) oxide
The invention discloses a method for regulating and controlling oxygen defects of a cerium dioxide nano material by pulse laser irradiation in a liquid phase, and the method comprises the following steps: dispersing CeO2 nanosheet powder in a solvent to prepare a 1mg / mL turbid liquid; wherein the solvent is at least one of water, methanol, ethanol or acetone; while stirring the turbid liquid, irradiating the turbid liquid for 5-60 minutes by adopting pulse laser with the wavelength of 355 nm or 532 nm, the pulse frequency of 20 Hz and the monopulse energy of 10-120 mJ; carrying out centrifugaltreatment, cleaning precipitates obtained by the centrifugal treatment by adopting deionized water, and then carrying out freeze drying to obtain the cerium dioxide nano material with reduced oxygendefects. The method is simple, safe, mild in condition, efficient and rapid in regulation and control process and environmentally friendly, other impurities are not introduced, and the pure and high-performance CeO2-x nano material with reduced oxygen defects can be obtained.
Owner:合肥中科纳普新材料有限公司
High-speed DDR single event effect evaluation system and method based on FPGA
PendingCN111444662AValid testEfficient StatisticsCAD circuit designComputer hardwarePulse laser irradiation
The invention relates to a high-speed DDR4 single event effect evaluation system and method based on an FPGA. The high-speed DDR4 single event effect evaluation system comprises a DDR4 to be tested, ahigh-energy irradiation experiment terminal or pulse laser irradiation platform and a single event test system. A DDR4 active region to be tested is located in the center of the high-energy irradiation experiment terminal or the pulse laser irradiation platform, and the DDR4 to be tested is in real-time communication with the single-particle test system; the lower computer system of the single particle test system is used for performing read-write operation on the DDR4 to be tested according to an instruction sent by the upper computer system and sending read-back data of the DDR4 to be tested to the upper computer system; and the upper computer system is used for issuing an instruction, carrying out read-write operation on the to-be-tested DRR4 in real time, carrying out read-back verification on written data, and discriminating single-particle soft errors, thereby realizing testing of the single-particle effect of the to-be-tested DRR4. The method can be widely applied to the fieldof single event effect testing.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
Online monitoring device for surface hardness of 3D printing part in forming process and method
PendingCN110763715AGuaranteed validityAvoid the phenomenon that the hardness does not meet the standardMaterial analysis using wave/particle radiation3d printOptical spectrometer
The invention belongs to the technical field of 3D printing equipment detection and discloses an online monitoring device for the surface hardness of a 3D printing part in a forming process. The device comprises a workbench, a laser, a spectrograph, a light path device, a reflector, an electric control displacement device, a computer and a support. The electric control displacement device, the laser and the support are sequentially arranged on the workbench, the laser is arranged below the reflector, the light path device is arranged on one side of the electric control displacement device, andthe computer is arranged above the workbench. The invention further discloses a detection method. The device is mounted in a forming chamber of 3D printing equipment, the pulse laser irradiation canbe performed on a formed part of the part in real time to generate plasma, plasma spectrum data are collected to evaluate the surface hardness of the formed part, a condition that the overall surfacehardness of the 3D printing part meets a design requirement is ensured through online real-time hardness detection, and the phenomenon that the hardness does not reach a standard due to unpredictablefactors in the forming process is avoided.
Owner:FUJIAN UNIV OF TECH
Laser-assisted positive electrode interface layer construction method
ActiveCN113937252AAvoid time costReduce energy consumptionSecondary cellsPositive electrodesHeat stabilityLasing wavelength
The invention relates to a laser-assisted positive electrode interface layer construction method, which is characterized in that a specific precursor solution is decomposed on the surface of an electrode and deposited on the surface of the electrode through pulse laser irradiation, electrolyte decomposition and interface side reaction are inhibited, and the cycling stability is improved. The method is characterized in that an additive in a precursor solution is induced by pulse laser to be decomposed on the surface of a positive electrode to realize construction of a positive electrode protection layer, wherein the pulse laser power is 20-200 mJ cm<-2>, the electrode area corresponding to the use amount of the precursor solution is 20 [mu] L<-1> mL cm<-2>, and the laser wavelength is 1064 cm<-1>. Due to locality of laser heating, the additive with relatively good thermal stability can be decomposed on the surface of the electrode plate without damaging the electrode structure, so that the electrode is protected. The construction method for the positive electrode protection layer can be used for large-scale production, and is simple to operate and low in cost.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Method for improving quality of proton beam in interaction of laser and target
The invention relates to a method for improving the quality of a proton beam in the interaction of laser and a target. The method comprises the following steps: 1, pre-pulse laser being positively incident on the front surface of a metal target, and heating an irradiated area into plasma; 2, performing pre-pulse laser irradiation, the forward laser I21 being used as a main pulse, emitting forwardly on the front surface of the ionized metal target; 3, irradiating reverse laser I22 from a target back to the back surface of the target in the direction opposite to the forward laser I21; wherein the incident time of the reverse laser light falls behind the incident time of the forward laser light by delta t from the back of the target to the back surface of the target, the value range of deltat is 4-10 fs, the intensity I22 of the reverse laser light I22 being equal to a I21, and the value range of a being 0.1-0.6; when the reverse laser meets the condition that a is equal to 0.2, and whendelta t is equal to 8fs, forward expansion of hot electrons on the back of the target can be inhibited by the prime power of the reverse laser, so that the electron cloud set is distributed at a specific position near the surface of the back of the target, the strength of a sheath electric field on the back of the target is improved to be optimal, the energy of protons is improved to be optimal,and the divergence angle of the protons is reduced.
Owner:ZHENGZHOU UNIVERSITY OF AERONAUTICS
Processing and analyzing system and method of mass spectrum device
PendingCN113745090AAccurate measurementTime-of-flight spectrometersSamples introduction/extractionData acquisitionEngineering
The invention discloses a processing and analyzing system of a mass spectrum device. The processing and analyzing system comprises a sample injection system, a sample ionization system, an ion detector, a data acquisition card, a control panel and analysis software, the sample injection system comprises a sample injection cavity and a main body cavity, and a sample target is arranged at the position of the sample cavity; the sample ionization system comprises a vacuum system and an ion source, and the vacuum system is used for vacuumizing a vacuum area; the ion detector is used for detecting flight time of ions with different mass-to-charge ratios; the data acquisition card is used for acquiring and converting an electric signal output by the ion detector and transmitting the electric signal to the control panel; the analysis software is installed on a processor, and the processor receives data transmitted by the control panel and analyzes the data through the analysis software. According to the vacuum system, the pressure intensity in a vacuum area can reach 3*10<-4> Pa or below, under high-pulse laser irradiation, a sample is effectively ionized, the detection limit reaches 1 fmol / ul, and the quality detection accuracy is as follows: the precision of an internal standard method is 150 ppm, and the precision of an external standard method is 200 ppm.
Owner:深圳泰莱生物科技有限公司 +1
Joining carbon laminates using pulsed laser irradiation
ActiveUS20200290293A1Improve accuracyDefect and stressLayered productsVehicle componentsSurface patternAdhesive
A method for bonding two elements, the method including receiving first and second elements, the first element being a composite material; applying a laser-based treatment to a surface of the first element to obtain a treated surface; patterning the treated surface to have plural trenches; applying an adhesive to one of the first and second elements; and joining the first element to the second element so that the adhesive is between the first and second elements.
Owner:UNIV DELLA CALABRIA +1
Method for coloring substrate of capacitive touch screen
ActiveCN104375723ANot easy to fall offImprove permeabilityInksInput/output processes for data processingCooking & bakingEngineering
The invention provides a method for coloring a substrate of a capacitive touch screen. The method for coloring the substrate of the capacitive touch screen comprises the following steps that a hydrographics transfer film is flat laid on the water surface; an activating agent is sprayed on the surface of the hydrographics transfer film, wherein the activating agent comprises, by weight, 20 parts to 25 parts of diethylene glycol monoethyl ether, 15 parts to 20 parts of N'N-carbonyldiimidazole, 40 parts to 50 parts of xylene and 5 parts to 10 parts of n-butyl alcohol; polishing, pulse laser irradiation and baking are conducted on the substrate of the capacitive touch screen in sequence, then the substrate of the capacitive touch screen is immersed in water, printing ink in the hydrographics transfer film is transferred to the surface of the substrate of the capacitive touch screen under the action of water pressure, and cleaning and drying are conducted. According to the method, the hydrographics transfer printing method is used for coloring the substrate of the capacitive touch screen, it is guaranteed that the thickness of a formed coating is small, the stability is high, falling is unlikely to happen, the technology is simple, and reliability is high.
Owner:FUJIAN FEIYANG OPTRONICS
Method and system for amorphizing metal material by adopting ultrafast pulse laser
The invention relates to a method and system for amorphizing a metal material by adopting ultrafast pulse laser, and belongs to the technical field of ultrafast pulse laser application. Firstly, an ultrafast laser pulse sequence is focused on a metal crystal in water through an objective lens, an ultrafast pulse laser irradiation area of the metal crystal is melted by regulating and controlling the number and energy flux of ultrafast laser pulses incident on the metal crystal, and rapidly cooling and quenching are carried out to prepare amorphous metal. According to the method and the system,the single pulse energy incident into the metal crystal material is strictly controlled by adjusting a precise attenuation wheel, so that metal is rapidly melted and rapidly cooled, and therefore, thedegree of amorphization can be controlled. The cooling speed of the metal can reach 1012-1013K / s and is faster than that of a conventional processing means, and the new method and the related systemfor realizing the amorphization of the metal are provided. According to the method, the mechanical property and the corrosion resistance of the material are more optimized, so that the amorphous single metal has a wider application prospect.
Owner:TSINGHUA UNIV
Preparation method of organic-inorganic composite microcapsule, obtained product and application
The invention discloses a preparation method of an organic-inorganic composite microcapsule as well as an obtained product and application of the organic-inorganic composite microcapsule. The preparation method comprises the following steps: firstly, preparing a MoS2-metal composite material by adopting pulse laser irradiation, mixing the MoS2-metal composite material, PAO5 oil, polysulfone and an organic solvent to obtain an organic phase, and dissolving lauryl sodium sulfate and polyvinyl alcohol in water to obtain a water phase; and mixing the organic phase and the water phase, and obtaining the microcapsule by adopting a solvent evaporation method. The method disclosed by the invention is simple to operate and low in cost, and the obtained microcapsule can automatically store a lubricant and has excellent tribological performance in the friction process.
Owner:QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)
Method of pulsed laser irradiation with reduced thermal damage
Optical energy for example, ultra-short laser beam pulses are delivered to a substrate by applying a temporal group 17 of optical pulses 16 to a region of the substrate 24. The temporal group 17 which
Owner:UNIV OF SOUTHAMPTON
Pulse laser-based over-focus scanning optical microscopic imaging device and method
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Electrolysis method for efficiently recovering copper from electroplating waste liquid / waste mud
PendingCN121321096APhotography auxillary processesElectrolysis componentsChemical industryHigh concentration
The invention relates to the technical field of metallurgy and chemical engineering, and particularly discloses an electrolysis method for efficiently recovering copper from electroplating waste liquid / waste mud, which specifically comprises the following steps: copper leaching, purification and acid regulation, complexing iron removal, electrodeposition copper deposition and photocatalytic air flotation treatment. Wherein in the electrodeposition copper deposition stage, through the synergistic effect of a pulse power supply, pulse laser irradiation and a rotating cathode, the rotating cathode continuously conveys high-concentration copper ions to a cathode interface through the convection effect; the pulsed power supply reduces an electric crystallization nucleation energy barrier in cooperation with laser irradiation while increasing the deposition rate, and improves the copper deposition compactness. And high-speed and high-efficiency deposition of copper and high density and high purity of a cathode product are realized through cooperation of the three components. And in the photocatalytic air flotation treatment stage, a trace amount of residual copper in the copper-poor liquid is efficiently enriched through a bismuth tungstate photocatalytic reduction and new copper reagent selective complexing air flotation separation technology, and the total recovery rate of copper is increased.
Owner:WENZHOU KERUI ENVIRONMENTAL RESOURCES UTILIZATION CO LTD
Oxyferric chloride microsheets loaded with noble metal nanoparticles and preparation method thereof
InactiveCN105251519BLarge specific surface areaHigh catalytic degradation efficiencyPhysical/chemical process catalystsWater/sewage treatment by oxidationPt elementFerric Compounds
The invention discloses an oxyferric chloride microsheet loaded with noble metal nanoparticles and a preparation method thereof. Microsheets have a length of 5-50 μm, a width of 2-10 μm, and a thickness of 0.2-1 μm, and are loaded with noble metal nanoparticles with a particle size of 10-120 nm, wherein the noble metal is gold, or platinum, or silver ;Methods First place the noble metal target in the ferric chloride solution under stirring, and then use laser irradiation with a wavelength of 532nm or 1064nm, a repetition frequency of 1-20Hz, a pulse width of 5-15ns, and a power of 40-120mJ / pulse The noble metal target is used for at least 1 min to obtain a mixed colloidal solution, and then the mixed colloidal solution is sequentially subjected to solid-liquid separation, washing and drying to obtain the target product. It has a higher performance of Fenton's catalytic degradation of sewage, and is extremely easy to be widely commercially applied to the catalytic degradation of pollutants in aqueous solution.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
A method for supporting small-size noble metals on a molybdenum carbide carrier
The application discloses a kind of liquid-phase laser preparation methods of molybdenum carbide carrier load metal composite material, first based on liquid-phase pulse laser ablation technology in acetone ablation elemental Ag or Au target material, obtain the Ag or Au nanoparticle of uniform dispersion with 1-2 layers carbon layer coating, the process metal nanoparticle size distribution is uniform and adjustable.Then utilize pulse laser irradiation technology to make oxide MoO3 powder in high carbon reduction liquid phase environment (acetone) in situ carbonization change into MoC nanoparticle.Finally, using 355nm wavelength laser irradiation metal nanoparticle and MoC mixed liquid can prepare Ag@MoC or Au@MoC etc. series composite materials.The method improves the traditional metal doped molybdenum carbide process, without adding any other surfactant, stabilizer and other chemical reagents, avoid the generation of other impurity products.Operation is simple, green and efficient, and strong universality.
Owner:HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
Method for detecting unwanted interface charge of mercury cadmium telluride thin film photovoltaic device
The invention discloses a method for detecting harmful interface charges of mercury cadmium telluride thin-film photovoltaic devices. The method uses a beam of ultrafast pulsed laser light with photon energy greater than the band gap of the tested device to back-irradiate the HgCdTe device, and uses a digital oscilloscope to measure the two phases of the photovoltaic device. The evolution relationship between the transient photovoltaic signal between electrodes and time, according to the interface charge-induced electric field measured by the external circuit and the photo-generated electromotive force formed by the pn junction electric field are separated in the time dimension, and the photo-generated electromotive force formed by the interface charge-induced electric field and the effective The identification of the photoelectromotive force formed by the built-in electric field of the metallurgical pn junction can easily obtain the information of the interface charge that has a great influence on the photoelectric response of the device. This is a convenient, rapid and non-destructive identification method, which is of great significance for improving device performance, improving device stability, and guiding people to explore new devices.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
A non-contact all-optical photoacoustic imaging device and method thereof
ActiveCN108051369BThere will be no phenomenon that the photoacoustic signal cannot be detectedAchieve clinicalMaterial analysis by optical meansContinuous lightLine width
The invention discloses a non-contact all-optical photoacoustic imaging device and a method thereof. The device includes a photoacoustic signal excitation component, a photoacoustic signal detection component, an interference phase modulation component, a photoacoustic signal acquisition / processing component, and a scanning platform. The acoustic signal excitation component, the photoacoustic signal detection component, the interferometric phase modulation component and the photoacoustic signal acquisition / processing component are connected in sequence, the photoacoustic signal acquisition / processing component is respectively connected to the photoacoustic signal excitation component, the photoacoustic signal detection component, and the interferometric phase modulation component The scanning platform is respectively connected with the photoacoustic signal excitation component and the photoacoustic signal detection component. The invention utilizes pulsed laser to irradiate biological samples to generate photoacoustic signals, and uses a narrow-linewidth superluminescent diode continuous light source as a photoacoustic signal detection light source to improve the detection sensitivity of samples with insufficiently flat surfaces, which is of great significance to the realization of the clinical application of photoacoustic technology. impetus.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Dual-path multi-angle optical fiber probe pulsed laser irradiation simulation system
The application discloses a kind of double optical path multi-angle optical fiber probe pulse laser irradiation simulation systems, including pulse laser generation device, optical path beam splitting device, light splitting link component, optical fiber probe component, sample bearing mechanism, probe adjusting mechanism and electrical detection device, wherein optical path beam splitting device is divided into two roads by pulse laser, and each road independently sets power adjusting unit and power monitoring unit;Two optical fiber probes are aligned to the same target point in the unified coordinate system, and the incident angle and the azimuth angle are continuously adjustable;Sample bearing mechanism is configured with hollow light window, and supports front, back and inclined angle incidence;Electrical detection device synchronously acquires device response.This application solves the problem that existing platform is difficult to realize double-beam multi-angle incidence on the same target point, independent calibration and timing calibration of branch power, can obtain characteristic data of device single event effect and its synergistic effect in angle-power-timing three-dimensional parameter space, and improves test accuracy, repeatability and comparability.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Preparation method of metal cluster in-situ implanted mesoporous silicon oxide catalytic material and application thereof in propane dehydrogenation to propylene
The application discloses a preparation method of a metal cluster in-situ implanted mesoporous silica catalytic material and application of the metal cluster in-situ implanted mesoporous silica catalytic material in preparation of propylene from propane dehydrogenation. First, a nanometer colloid with a very small size is prepared in deionized water which is a solvent for synthesizing mesoporous silica through liquid phase pulse laser irradiation technology, and then the nanometer colloid is in-situ synthesized with a silicon source and a surfactant and the like which are precursors for synthesizing mesoporous silica through a one-pot solvothermal method. After the product is subjected to freeze drying and calcination treatment, a composite catalytic material of the metal cluster in-situ implanted mesoporous silica is obtained. The type, loading amount and size of the implanted metal in the silica carrier are controlled by adjusting laser irradiation time, wavelength and energy size, the metal in the obtained composite catalytic material is uniformly dispersed and the loading amount is high, a novel universal strategy is provided for designing and preparing a metal limited mesoporous silica composite catalytic material, and finally, a composite catalytic material with high activity, high propylene selectivity and high stability for preparing propylene from propane dehydrogenation is obtained.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
A kind of preparation method containing molybdate radical solution
ActiveCN108557887BImprove production efficiencyMolybdeum compoundsUltravioletPulsed laser irradiation
Owner:合肥中科纳普新材料有限公司
Semiconductor element cleaning solution and manufacturing method thereof
PendingCN121991769Ahigh purityNon-surface-active detergent compositionsDetergent mixture composition preparationPhysical chemistryPulse laser irradiation
The invention relates to a semiconductor element cleaning solution and a manufacturing method thereof. The semiconductor element cleaning solution is characterized by containing 10 ppb or less of a phenolic compound, and by the laser-induced breakdown detection method, the ratio of the number of times of plasma generation per unit pulse laser irradiation is less than 2%. The semiconductor element cleaning liquid is a high-purity semiconductor element cleaning liquid capable of suppressing generation of residues on the surface of a cleaning object during cleaning of a semiconductor element by effectively controlling phenolic compounds inevitably generated in a manufacturing process of the semiconductor element cleaning liquid.
Owner:DONGWOO FINE CHEM CO LTD
A method for constructing supported catalytic materials based on laser ablation technology and application thereof
The application belongs to the technical field of catalytic materials, and particularly relates to a method for constructing a supported catalytic material based on a laser ablation technology and application thereof. The method is to treat a suspension liquid containing a catalytic active component and a carrier material or a suspension liquid containing raw materials for preparing the catalytic active component and the carrier material by a liquid-phase laser ablation technology, and to load the catalytic active component on the carrier material by pulse laser irradiation to obtain the supported catalytic material. The supported micro-nano catalytic material prepared based on the technology is a composite micro-nano structure functional material formed by loading a catalytic active component on a non-catalytic active carrier material, and belongs to a multifunctional supported composite catalyst, which has a good overpotential under alkaline and acidic conditions, has a catalytic performance comparable to a platinum-based catalyst, and can be applied in an electrochemical field or an electrocatalysis field.
Owner:SUN YAT SEN UNIV
Forming process of pc composite material
The invention discloses a molding process of a PC composite material, which comprises the following steps: A, adding a composite nano-lubricant prepared after drying aluminum sol mixed with inorganic nano-lubricant particles into the material components of the PC layer, and then forming the PC layer; B. The surface of the formed PC layer is modified by pulsed laser irradiation to increase the surface roughness; C. The coating solution is prepared by methyltrimethoxysilane, tetraethyl orthosilicate, and aluminum sol by gel method, and the coating solution is coated The surface of the modified PC layer in step B is dried to form a PC composite multilayer body. In this plan, the coating method is used to improve the scratch resistance of the PC material, and the aluminum sol is compounded with an inorganic nano-lubricant. According to the method of modifying the surface of the PC layer to improve the surface roughness, a coating with an organic-inorganic cross-linked network structure is formed through a co-condensation reaction. After testing, the coating has good adhesion to the PC surface, and the formed PC-coating is composite The multilayer body has strong scratch resistance and good heat resistance.
Owner:NINGBO FUERDA SMARTECH CO LTD
Micro-nano particle cleaning method based on laser-induced water cavitation effect
The invention discloses a micro-nano particle cleaning method based on a laser-induced water cavitation effect, and relates to the technical field of micro-nano cleaning, the micro-nano particle cleaning method comprises the following steps: selecting transparent glass with cerium oxide micro-nano particles attached on the surface as a substrate to be cleaned; the transparent glass to be cleaned is horizontally soaked in water, the face, with cerium oxide particles deposited, of the surface of the transparent glass faces downwards, and the face, without particles, of the surface of the transparent glass faces upwards; adopting an electro-optic Q-switched nanosecond pulse laser to perform single-pulse laser irradiation on the transparent glass soaked in the water in a reverse cleaning manner; in the laser irradiation process, cerium oxide particles in water below the transparent glass and a water medium are rapidly heated due to laser energy absorption, and cavitation bubbles are generated after saturated vapor pressure of the water is reached; shock waves are released when the cavitation bubbles collapse, and the direction of the shock waves is close to the tangential direction parallel to the transparent glass substrate; the tangential shock wave overcomes the adsorption force between the cerium oxide particles and the transparent glass, so that the particles are separated from the surface of the transparent glass in a sliding manner to realize micro-nano particle cleaning.
Owner:SICHUAN ZHIZHEN PRECISION OPTICAL CO LTD