107results about How to "Promote excitation" patented technology

The invention discloses a double-color laser light source which comprises a blue laser and a red laser which emit blue laser light and red laser light respectively; and a fluorescent wheel, the surface of which is coated with green fluorescent powders, wherein the green fluorescent powders emit green fluorescence when excited by the blue laser light. The double-color laser light source also comprises a speckle dissipation system. The speckle dissipation system comprises a first diffusion portion which is controlled to rotate, is arranged in a beam shaping optical path of the blue laser light and red laser light and is used for diffusing the blue laser light and the red laser light; and a second diffusion portion which is controlled to rotate, is arranged before a blue laser light, red laser light and green fluorescence incident light bar, and is used for at least penetrating the blue laser light and the red laser light sequentially and forming blue light and red light output. The double-color laser light source can effectively reduce speckle effect and improve display quality of projected images.

The invention relates to an infrared radiation enhanced coating and a preparation method thereof. The downconversion frequency shift infrared radiation enhanced coating is characterized by consisting of the following components in percentage by mass: 20 to 50 percent of radiation synergistic enhancer, 1 to 7 percent of downconversion frequency shift additive, 15 to 45 percent of high-temperature resistant base stock, 32 to 50 percent of high-temperature binder, 1 to 4 percent of flexibilizer and 1 to 4 percent of coating auxiliary agent, and the sum of the mass percentage of the components is 100 percent. The coating not only has high emissivity and good thermal shock resistance, but also can convert visible light into infrared radiation; and the thermal conversion efficiency of the coating is effectively improved.

The invention discloses an ultraviolet fluorescence three-signal water quality sensor taking a single UV-LED as a light source and an application thereof and belongs to the fields of environmental monitoring and water treatment. The ultraviolet fluorescence three-signal water quality sensor comprises a light path part and a signal control processing part, wherein the light path part comprises one UV-LED, a sample tank, an ultraviolet probe, a fluorescent probe A and a fluorescent probe B; and the signal control processing part comprises a power supply module, a signal amplifier A, a signal amplifier B, a signal amplifier C, an analog-digital converter and a micro processor. The ultraviolet fluorescence three-signal water quality sensor has the advantages that no chemical reagent is consumed, real-time monitoring on change of overall concentration of dissolved organic matters in water can be realized, and real-time change of concentration of a protein or humus fluorescent component can be reflected, so that the ultraviolet fluorescence three-signal water quality sensor can be used for online predicting disinfection byproduct formation potential and degradation degree of micropollutants in an advanced oxidation process, and a flexible, rapid, efficient, economic, simple and informative online monitoring device is provided for water treatment.

The invention discloses a method for determining low-temperature working stress limit of an aircraft anti-skid braking control box. The low-temperature working stress limit of the control box is determined by applying low-temperature stress to the control box in a stepped mode with a low-temperature step environment stress test method. In the method, the test time for testing the low-temperature working stress limit of the control box is 6-8 hours; the temperature drop step length is 1-5 DEG C; the temperature drop rate is 25-60 DEG C/minute; the temperature is kept for 5 minutes each time after the temperature is dropped to a specified value; the time for temperature balance of the control box is reserved; then performance test is performed, and the test time is 5 minutes; and the sum oftemperature keeping time at each step is 10 minutes. The low-temperature working stress limit of a sample is obtained according to such stepped temperature drop test method. Since the failure of the control box occurs in a working process, application of working stress in the test process of dropping the temperature by using the stepped method more facilitates excitation and observation of the failure; and a test method capable of quickly determining the low-temperature failure hidden trouble of the control box and determining the low-temperature working stress limit of the control box is formed.

The invention belongs to the technical field of photoelectric display materials and devices, which relates to a process for manufacturing phosphor excited by royal purple light or blue light and a white diode which is produced by encapsulating the phosphor and a chip. The components of the phosphor includes Sr3-a-bBaaSi1-cO5: bD, cE, dF and eG, wherein D is divalent Eu, E is trivalent Ce, F is element B, G is univalent Li, and a, b, c, d, and e are atom mole numbers, and number range is that 0.0<=a<=0.2, 0.0<=b<=0.2, 0.0<=c<=0.2, 0.0<=d<=0.2 and 0.0<=e<=0.2. According to the components of the phosphor, a compound silica sol is prepared for processing spray granulation to gain xerogel particles, and phosphor particles are gained by microwave high-temperature heating the xerogel particles. The employment of the components of the phosphor and the process for preparation ensures the easy regulating of the size, appearance, optical spectrum, brightness and luminous efficiency of the phosphor particles, thereby realizing mass production. The white diode is gained by encapsulating the phosphor particles and the royal purple light or blue light GaN (Gallium nitride) base chip.

The invention discloses a preparation method of PbSxSe1-x ternary nanocrystal. The method disclosed by the invention comprises the following steps of: mixing selenium powder and sulfur powder according to a certain proportion, slowly adding alkylamine which has long chain and has boiling point more than 180 DEG C, sufficiently stirring, heating (the selenium powder and the sulfur powder) amine mixed liquor into 180-260 DEG C, forming into settled solution at constant temperature, and adding the alkylamine which is dissolved with lead chloride and has the long chain and the boiling point more than 180 DEG C, so that a system is naturally cooled into room temperature after being sufficiently reacted, adding 10mL of chloroform into the system, and adding ethanol of which the volume is twice as high as the volume of the reaction solution into the reaction system, so that PbSxSe1-x ternary nanocrystal particle precipitate is separated out, therefore, the PbSxSe1-x ternary nanocrystal particle can be obtained.

The invention discloses a matrix-assisted excitation spectrum detection system adopting plasma surface sample injection. The matrix-assisted excitation spectrum detection system adopting plasma surface sample injection comprises a carrier gas system, a microwave source system, a sample injection system, a microwave induced plasma excitation source, a detection system for carrying out collection, transmission, beam splitting and detection on the detection light emitted by the microwave induced plasma excitation source, and a data processing system for carrying out analysis processing on the output signal of the detection signal, wherein the carrier gas system is connected with the gas discharge tube inlet of the microwave induced plasma excitation source, the signal input end of the data processing system is connected with the signal output end of the detection system; the microwave induced plasma excitation source is connected with the microwave source system through a microwave transmission line. According to the matrix-assisted excitation spectrum detection system adopting plasma surface sample injection, disclosed by the invention, elemental analysis is carried out in a manner of surface sample injection; the system is miniaturized in composition, good in production stability, high in sensitivity, simple in device, simple and convenient to operate, low in sample consumption, high in analysis speed, low in energy consumption, and low in gas consumption.

The invention belongs to the technical field of preparation of hexagonal boron nitride (h-BN) and a hybrid structure thereof, and particularly relates to a method for preparing h-BN and the hybrid structure thereof through plasma enhanced chemical vapor deposition (PECVD). Copper foil serves as a substrate, solid borane ammonia complex serves as a boron source and a nitrogen source, and the hybrid structure of the h-BN is prepared through PECVD. The method includes the specific steps that the substrate and the borane ammonia complex are arranged in a quartz boat and then put into a PEVCD system to be vacuumized; a reaction furnace is heated to a corresponding temperature, gas is introduced to the reaction furnace, and then the substrate is moved to the center of the furnace; the system pressure is adjusted, and heat treatment is carried out; the h-BN and the hybrid structure thereof are grown; and the h-BN and the hybrid structure thereof are cooled to the room temperature. The method for preparing the h-BN and the hybrid structure thereof through PECVD is simple in process, easy and convenient to operate, high in controllability and capable of achieving continuous regulation of the band gap of the h-BN and the hybrid structure thereof.

The invention discloses a method for determining the vibration working stress limit of an aircraft anti-skidding braking control box. the method comprises the following steps: applying vibrating stress on a control box in a stepping manner to determine the vibration working stress limit of the control box, wherein the step size of the vibration stress applied in a stepping manner is 1-5Grms; the state is kept for 5min every time stepping vibration reaches a specified value to reserve time for vibration stress balancing of the control box, and then a test is performed and lasts for 5min, and the total amount of vibration maintaining time in each step is 10min; and obtaining the vibration working stress limit of a sample piece by using the stepping vibration testing method. According to theinvention, a method that working stress is applied to the control box in the testing process is adopted, and a fault vibration value is determined in time by tracking and observing. If the vibration amount value does not satisfy a design requirement, an improvement advice focused on the vibration performance is proposed. If the vibration amount value satisfies the design requirement, the vibration amount value is taken as an initial value of the vibration working stress limit.

The invention relates to an optimum design method of a seismic survey line by utilizing remote sensing information for arranging and determining an optimum position according to a survey line theory at an early stage of seismic construction. The method comprises the following steps of: firstly, acquiring remote sensing images, and fusing the remote sensing images by utilizing a field actual measurement control point; acquiring more than one selectable survey line according to mobile limiting conditions and seismic acquisition parameters; generating an evaluation point set according to integral track pitches to obtain various evaluation factor index values; normalizing the evaluation factor index values; calculating the goodness of the integral survey lines in a weighting way; sequencing; and selecting a straight survey line with maximal goodness for construction. The invention can meet the requirements for selecting a better survey line position under the condition of detecting an underground target, overcome the defect of limitation on the arrangement and the regulation of seismic survey lines in complex surficial seismic engineering, enhance the implementation of the survey lines, improve the exciting and receiving conditions and increase the signal to noise ratio.

The invention discloses a health detecting system for a composite board structure and a work method thereof. The system comprises a random waveform function generator, a power amplifier, an ultrasonic transducer, a signal processing circuit, a data collecting card and a computer. The invention further discloses a novel health detecting method for the composite board structure, namely an integrated ultrasonic guided-wave and machine magneto-impedance compound detecting method. The integrated ultrasonic guided-wave and machine magneto-impedance compound detecting method comprises the steps of firstly utilizing an ultrasonic guided-wave method to measure and obtain a damaged position, then utilizing a machine magneto-impedance method to measure and obtain a damage category and a damage degree, then performing correlation operation on ultrasonic guide-wave signals and machine magneto-impedance signals in a damaged state and an undamaged state of the composite board, fusing obtained correlation coefficients to obtain a new damage evaluation index and utilizing the damage evaluation index to qualitatively identify defects. The compound detecting method can effectively measure the position, category and degree of damage and make up the shortcoming that two methods cannot obtain all information of the damage in independent measurement.

The invention relates to a method and a system for detecting and positioning micro-cracks based on an ultrasonic phased array. The method comprises the following steps of loading a low-frequency excitation signal onto a defect specimen by a low-frequency ultrasonic probe, loading a high-frequency excitation signal onto a defect specimen by an ultrasonic phased array transducer, and enabling the low-frequency excitation signal and the high-frequency excitation signal to mutually act and generate an echo signal; collecting the echo signal, and filtering the echo signal; performing time reversalsimulation treatment on the filtered echo signal, so as to obtain a plurality of focus points; according to the multiple focus points, determining the position of the micro-crack. The method has the advantages that the phased array technique, the vibration sound modulation and the time reversal are combined, so as to provide the method and the system for detecting and positioning the micro-cracks;the system and the method can be widely applied to the detection and positioning of the micro-cracks in the structures of different types; the identification rate and precision are higher, and the universality is high.

The invention discloses a method for preparing a molybdenum disulfide/silver nano-immune substrate material, and a repeatable immunodetection application thereof. The method is characterized by comprising the following steps: 1) preparing a molybdenum disulfide nanomaterial; 2) spin coating a molybdenum disulfide nano-material solution on a clean silicon wafer, and after vacuum drying, sputteringa layer of Ag nanoparticles on the surface of the silicon wafer by using a magnetron sputtering method to obtain a molybdenum disulfide/silver nanomaterial; and 3) connecting an antibody to the molybdenum disulfide/silver nanomaterial to obtain the molybdenum disulfide/silver nano-immune substrate material. The immunodetection method of the molybdenum disulfide/silver nano-immune substrate material is as follows: dripping an antigen to be tested onto the molybdenum disulfide/silver nano-immune substrate material for incubation, dripping a gold nanorod immune probe solution and performing spectral measurement. After catalytic degradation, the molybdenum disulfide/silver nanomaterial can achieve the repeatable immunodetection of cancer markers, and has the advantages of being low in detection limit and being recyclable.

The invention relates to a method for in-situ preparation of 100-face diamond through microwave plasma-magnetron sputtering composite vapor deposition.and equipment thereof. The method comprises the following steps: etching inorganic matters and surface defects on the upper surface of a silicon substrate by using a ground and polished monocrystalline silicon or potassium tantalate substrate and using reaction or inert gas plasma; then forming a 2-micron Ir buffer layer through magnetron sputtering, and forming SP3 bonds of the carbon element to promote growth of the diamond film; then, starting diamond 100-face bias pressure enhanced nucleation; and starting heteroepitaxial diamond growth. The diamond preparation efficiency and preparation quality are improved.

The invention provides an infrared light detection thin film, device and display device and a fabrication method of the infrared light sensing thin film. Compared with a device employing a TFT leakagecurrent as an infrared photosensitive thin film transistor, a bottom gate-type field-effect transistor structure is in a way that a photovoltaic gate is arranged in a gap between a source and a drain, the photoelectron simulation is substantially improved. In each detection pixel, the source and the source are connected in parallel, the drain and the drain are also connected in parallel, adjacentsource and drain are in clearance fit, the recombination probability of electrons and holes of optical excitation is reduced, the success probability of the photoelectrons collected by an electrode under a field-effect effect is improved, and the photosensitivity of the TFT leakage current infrared light thin film transistor is improved to the maximum extent. The infrared light detection thin film can be implemented without doping boron-containing gas, the pollution to an environment during the production process of the infrared light detection thin film is effectively reduced, and the production cost is reduced.

The invention discloses a preparation method of a composite straw sheet. The method includes: increasing the content of sulphate aluminium cement clinker into common sulphate aluminium cement, adding hydraulic calcium oxide as an exciting agent, and conducting blending to form compound sulphoaluminate cement, and bonding the cement with crop straw to obtain the sheet. And the side effects of straw on cement setting and hardening can be overcome. In the method, the straw is not soaked by alkaline water, a chlorine-containing material is unnecessary for modification treatment on straw, wastewater discharge does not exist, heating is not needed, smoke dust and exhaust emission are absent. The advantages of light weight and abundant fiber of crop straw are utilized for low energy consumption and pollution-free preparation of the composite straw sheet.

The invention relates to an ultrasonic welding technology, and aims at providing a longitudinal-radial coupled vibration integrated ultrasonic roll welding tool head. The tool head comprises an end part circular plate structure and an axial amplitude-change pole structure which are integrally machined, the overall axial section of the tool head is in a T shape, and the tail end of the axial amplitude-change pole structure is provided with a counter bore with an internal thread or a stud with an external thread. According to the longitudinal-radial coupled vibration integrated ultrasonic roll welding tool head, rolling contact of the integrated ultrasonic roll welding tool head and an auxiliary roller is realized, so that linear speed synchronization between the integrated ultrasonic roll welding tool head and the auxiliary roller is realized, and therefore, the problem of material extrusion in the welding process is avoided, better welding sealing can be achieved on different material thicknesses, the problem of material extrusion is synchronously solved, larger welding pressure can be allowed between the the integrated ultrasonic roll welding tool head and the auxiliary roller, the welding speed can be remarkably increased under the condition of the same amplitude, the impact force borne by the radial surface of the end part circular plate structure cannot directly act on a transducer of an external ultrasonic structure, the risk of transducer damage is greatly reduced, installation is convenient, and use requirements of most welding scenes can be met.

The invention discloses a coupling device with an electrode fixture applied to coupling of a laser and a silicon waveguide. The coupling device comprises a workbench, a stand column and a cross beam;a coupling component, a coupling locating fixture and a light receiving component are sequentially arranged on the workbench; the coupling component comprises an X-direction first sliding rail fixed on the workbench, a three-directional floating adjustment mechanism and an angle adjuster; a lifting electrode fixture is arranged at the horizontal end part of the angle adjuster; the coupling locating fixture comprises a first support fixedly installed on the workbench; a first objective table and a locating fixture are arranged on the first support; the light receiving component comprises a photoelectric detector, a lens sleeve and a light beam quality analyzer; the photoelectric detector right faces the electrode fixture and the first objective table; a first movable camera component is arranged right above the coupling locating fixture, and a second movable camera component is installed on the lateral side of the coupling locating fixture. The coupling device is high in free degree ofadjustment and convenient to adjust the direction and angle; the light beam is easy to adjust and align, and the success rate of coupling is relatively high.

The invention relates to a bovine herpes virus antigen composition and an application thereof. The bovine herpes virus antigen composition comprises at least two of bovine herpes virus recombinant gBprotein having an amino acid sequence as shown in SEQ ID NO: 1, bovine herpes virus recombinant gD protein having an amino acid sequence as shown in SEQ ID NO: 2, bovine herpes virus recombinant gH protein having an amino acid sequence as shown in SEQ ID NO: 3 and bovine herpes virus recombinant gL protein with an amino acid sequence as shown in SEQ ID NO: 4. Sequence information and space structures of gB protein, gD protein, gH protein and gL protein of bovine herpes virus are comprehensively analyzed, site-specific mutagenesis is performed on the four proteins respectively, respective immunogenicity of the proteins is improved, neutralizing antibody can be better stimulated, the immune effect is better, and the immune period is longer.

The invention discloses a manufacture method for a mirror surface blind trough aluminum substrate. The manufacture method for the mirror surface blind trough aluminum substrate comprises the following steps: firstly, producing a circuit line on a core plate and conducting pretreatment; then, selecting a mirror surface aluminum substrate with corresponding thickness according to the need of a user, pretreating the mirror surface aluminum substrate, and pasting stagnant glue on the side which is not the mirror surface and conducting roasting treatment; finally, compressing the mirror surface aluminum substrate together with the stagnant glue in an overlapped mode, so that a mirror surface blind trough aluminum substrate is formed. A normal drill and an end mill can be used when the manufacture method for the mirror surface blind trough aluminum substrate is adopted, thus cost of consumable items is reduced. Meanwhile, the manufacture of the mirror surface aluminum substrate is not affected by the thickness of a plate, production efficiency and quality are improved and market popularization prospect is good.

The invention provides a white-light OLED (organic light emission diode) device. The device comprises a conductive anode substrate as well as a hole-transmission layer, a blue light emitting layer, an electronic transmission layer and a cathode which are stacked on the conductive anode substrate sequentially, wherein the conductive anode substrate comprises a glass substrate and a conductive anode arranged on the glass substrate, and a red light color conversion layer is arranged on one surface, facing air, of the glass substrate; materials of the red light color conversion layer comprise a red light fluorescent material, scattering nanoparticles and a photocuring adhesive, and the light absorption wavelength peak of the red light fluorescent material ranges from 460 nm to 470 nm; the materials of the blue light emitting layer comprise a blue light fluorescent material and a blue light host material, and the light absorption wavelength peak of the blue light fluorescent material ranges from 460 nm to 470 nm. The white-light OLED device can realize emission of white light with stable light color, and the light emitting efficiency can be improved by means of the red light color conversion layer. The invention further provides a preparation method of the white-light OLED device.

The invention discloses a fluorescence excitation testing device. The fluorescence excitation testing device comprises a camera obscura used for light shielding, a sample tray which is arranged at the top of the camera obscura and used for placing a tested sample, a plurality of excitation light sources arranged at the bottom of the camera obscura, as well as an optical receiver which is arranged between the sample tray and the excitation light source and positioned in the middle of the camera obscura, wherein the bottom of the sample tray is transparent, the plurality of excitation light sources are symmetrically distributed at the bottom of the camera obscura and emit excitation light which irradiates onto the tested sample in the sample tray through the transparent bottom of the sample tray and excites the tested sample to emit excited light, and the optical receiver is used for collecting mixed light of the excitation light and the excited light. According to the fluorescence excitation testing device disclosed by the invention, measurement results are accurate and have very high reference values.

The invention is a method for synthesizing diamond membrane at low temperature by microwave plasma, comprising the steps of: charging Ar and H2 gases into a microwave plasma synthesizing cavity; at a microwave power of 600-750W and a gas pressure of 900-1100Pa, ionizing the gases into plasma; when the plasma is stable, charging CH4 gas into the plasma cavity and able to implement deposition of diamond membrane without intensifying external magnetic field. And the method has advantages of simple process, easy to implement, high deposition rate, etc.

The invention discloses an electromagnetic ultrasonic critical refraction longitudinal wave excitation device which comprises a wedge block, a printed circuit board, conductive paste and a permanent magnet. The device utilizes the excitation principle of the electromagnetic ultrasonic transducer to excite longitudinal waves in the conductive paste, and then the longitudinal waves are conducted through the wedge block so that critical refraction longitudinal waves are generated on the surface of a tested piece. Then the wave velocity of the critical refraction longitudinal wave under differentexcitation frequencies is measured, and the stress under different excitation frequencies is obtained according to the linear relation between the wave velocity of the critical refraction longitudinalwave and the stress in the acoustic elasticity principle; the penetration depth under different excitation frequencies is obtained according to the relationship between the penetration depth of thecritical refraction longitudinal wave on the surface of the tested piece and the excitation frequency, then the corresponding relationship between the penetration depth and the stress is obtained, andthe stress under different depths can be calculated. The conductive paste is a soft paste and can be used as a coupling agent while being used as a conductive medium so that the usage amount of the coupling agent is reduced, the conductive paste is conductive and is not liable to volatilize and the measurement accuracy is ensured.