18results about How to "Boost launch" patented technology

The invention belongs to the technical field of luminescent materials, and particularly relates to a luminescent material, an anti-counterfeiting optical thin film and a preparation method thereof. The chemical general formula of the luminescent material is SrGa < 12-x > Mn < x > O < 19 > / Ga < 2 > O < 3 >, and x is equal to 0.025 to 0.035. The preparation method of the anti-counterfeiting optical thin film comprises the following steps: uniformly mixing a luminescent material, a PDMS polymer and a curing agent to obtain colloid, and curing to obtain the optical thin film, the mass ratio of the luminescent material to the PDMS polymer is 1: (0.65-1.5), and the mass ratio of the PDMS polymer to the curing agent is (9-10): 1. The invention overcomes the defects that inorganic fluorescent powder in the prior art only has one light-emitting mode of photoluminescence, is poor in anti-counterfeiting effect and is easy to counterfeit.

The invention discloses a hemispherical lens coupling method for a terahertz photoelectric chip, and the method comprises the steps: carrying out the ultrasonic cleaning of a printed circuit board and a hemispherical lens, buckling the plane side of the hemispherical lens on the back surface of the printed circuit board, dropping ultraviolet glue into the connection part, carrying out the solidification through an ultraviolet lamp, fixing the printed circuit board and the hemispherical lens on a pedestal, and carrying out the ultrasonic cleaning. The center hole of the terahertz photoelectric chip is aligned with the circle center of the hemispherical lens by using a two-dimensional imager, and finally the terahertz photoelectric chip and the hemispherical lens are coupled by using a chip mounter. The method can be used for the manufacturing process of the transmitting or receiving chip, and the coupling method is high in standardization degree, good in compatibility and good in repeatability and can be used for large-scale production and manufacturing.

The invention discloses a high-color-rendering-index and high-thermal-conductivity composite fluorescent ceramic for solid-state illumination and a preparation method thereof. The composition of the composite fluorescent ceramic is xLu2.94 Al5O12: 0.02 Ce < 3 + >-K1. 98SiF6: 0.02 Mn < 4 + >, x refers to the mass fraction of LuAG in KSF, and x is greater than or equal to 1wt% and less than or equal to 10wt%. The preparation method comprises the following steps: preparing Lu2.94 Al5O12: 0.02 Ce < 3 + > green fluorescent powder by adopting a solid-phase reaction method, preparing K1. 98SiF6: 0.02 Mn < 4 + > nanoscale fluoride powder by adopting a hydrothermal synthesis method, respectively weighing the two kinds of fluorescent powder according to a chemical formula xLu2.94 Al5O12: 0.02 Ce < 3 + >-K1. 98SiF6: 0.02 Mn < 4 + >, loading into a graphite mold, carrying out vacuum sintering, carrying out air annealing, and then carrying out double-sided polishing to obtain the composite fluorescent ceramic. The color rendering index of the ceramic is obviously improved and reaches up to 90 or above under the excitation of a blue light LED chip with the wavelength of 450 nm. By adding LuAG, the heat conductivity and luminous efficiency of the KSF can be effectively improved, and meanwhile, the method is easy to realize industrial production.

The present application provides a perovskite photodetector and a method for preparing the same. The perovskite photodetector comprises a polyvinyl alcohol-nanometallic particle layer and a perovskite layer which are stacked; there is a cavity between the polyvinyl alcohol-nanometallic particle layer and the perovskite layer. The method for preparing the perovskite photodetector comprises: forming the polyvinyl alcohol-nanometallic particle layer on a first substrate using a polyvinyl alcohol solution containing metal nanoparticles; coating a PbX solution on a second substrate to obtain a PbX film, then reacting the PbX film with a YX solution to obtain a perovskite polycrystalline film, and annealing to obtain a perovskite layer; and laminating the polyvinyl alcohol-nanometallic particle layer and the perovskite layer to obtain a perovskite photodetector. The perovskite photodetector provided in the present application achieves the control of the distance between the metal nanoparticles and the perovskite through the cavity between the polyvinyl alcohol-nanometallic particle layer and the perovskite layer, thereby achieving an LSPR enhancement effect.

This invention discloses nanoparticles that enhance the near-infrared II fluorescence of indocyanine green, their preparation method, and applications. The nanoparticles are prepared by mixing PLGA-PEG-PLGA and ICG-NHS. The specific method is as follows: S1, dissolve PLGA-PEG-PLGA in a solvent to form a first solution; S2, dissolve ICG-NHS in a solvent to form a second solution; S3, thoroughly mix the first and second solutions, react them, and remove unreacted substances by ultrafiltration to obtain the nanoparticles. The order of steps S1 and S2 is not limited. This invention enhances the emission of ICG through PLGA-PEG-PLGA, extending the application of ICG in the near-infrared II region to the NIR-IIa region (1300nm-1400nm), and effectively prolongs the circulation time of ICG in the blood, thus removing limitations in its application in fields such as tumor and vascular disease diagnosis.

This application relates to a nanodiamond radiation heat dissipation coating composition, its preparation method, and the product thereof. It belongs to the field of heat dissipation materials technology. The composition of this application uses silanization modification to solve the problem of nanodiamond agglomeration, resulting in uniform nanodiamond dispersion and long-term storage stability. It uses an organic-inorganic dual resin of silicon-modified polyurethane / inorganic siloxane protease, which balances adhesion, hardness, and temperature resistance, with a temperature resistance ≥600℃. The magma extract dispersant has three functions: dispersion, enhanced infrared radiation, and weather resistance. During spraying, surface drying at room temperature ≤5 minutes, complete curing ≤24 hours, insulation withstand voltage ≥4000V, and UV aging simulated life >10 years.

The invention belongs to the technical field of micromachinery, and particularly relates to a preparation method of a piezoelectric type and capacitive type compatible micromechanical ultrasonic transducer. The preparation method of the micromechanical ultrasonic transducer comprises a silicon-silicon bonding process and an anodic bonding process. The micro-mechanical ultrasonic transducer is divided into a capacitance type, a piezoelectric type and a piezoelectric-capacitance mixed type; each piezoelectric unit structure comprises a substrate layer, a cavity layer, an elastic layer, a middle electrode layer, a piezoelectric layer, a top electrode layer, a passivation layer and a bonding pad; the capacitive unit structure comprises a substrate layer, a bottom electrode layer, a cavity layer, an elastic layer, a middle electrode layer and a bonding pad; the piezoelectric-capacitance hybrid unit structure comprises a substrate layer, a bottom electrode layer, a cavity layer, an elastic layer, a middle electrode layer, a piezoelectric layer, a top electrode layer, a passivation layer and a bonding pad. According to the invention, processing of the three devices can be realized, and the three devices can be compatible on the same wafer. Wherein the piezoelectric-capacitance hybrid type breaks through the loop sensitivity bottleneck of the traditional piezoelectric type and capacitance type micromechanical ultrasonic transducers.

The invention belongs to the technical field of inorganic laser materials, and particularly relates to a Pr ion doped gallate laser crystal material and a preparation method and application thereof. The chemical formula of the Pr ion doped gallate laser crystal material provided by the invention is shown as a formula 1: xPr: AB1-xGa3O7 formula 1, in the formula 1, an element A is at least one of Ca, Sr and Ba, an element B is at least one of Y, La, Gd and Lu, and x is greater than 0 and less than or equal to 0.2. The Pr ion-doped gallate laser crystal material provided by the invention is a single crystal material, and can enhance the absorption and emission intensity of Pr ions according to the disordered structure of the host crystal, so that more efficient laser output is realized when the crystal is directly pumped by a blue light LD (laser diode). The crystal provided by the invention can be used for laser output of a visible light band, and has a wide application prospect in the fields of scientific research, industrial manufacturing and military affairs.

The present invention discloses a gas distribution system and control method for a mixed ice projectile. The gas distribution system for the mixed ice projectile of the present invention includes an acceleration unit for performing gas acceleration when launching the projectile, and includes a propulsion gas source, which is connected to the barrel inlet of the condensing gun barrel through a pipeline; includes an exhaust unit for exhausting gas in the gas distribution system, and includes a vacuum unit, which is connected to other pipelines in the gas distribution system through pipelines; includes a raw material gas supply unit for providing the gas distribution system with the raw material gas required for the condensing projectile, and includes a raw material gas source, which is connected to the barrel inlet and the barrel outlet of the condensing gun barrel through a pipeline; includes a control unit for controlling the start and stop of the acceleration unit, the exhaust unit and the raw material gas supply unit, and the detection of the projectile making or launching process. The present invention can accurately supply the raw material gas for the projectile, and realize the detection of projectile forming and acceleration.

The application provides a kind of millimeter wave three-dimensional detection imaging radar, including millimeter wave MIMO transceiving antenna, millimeter wave transceiving link, radar control processing module, external display control unit and power module;The antenna port area of mouth-shaped transceiving antenna array can be minimum under the condition that resolution requirement is relatively high, the antenna array carries out cutting angle processing, increases the transmitting and receiving spacing, reduces transmitting and receiving coupling, improves the action distance;wk imaging algorithm solves the problem that traditional three-dimensional FFT conversion imaging algorithm exists distance bending under large bandwidth, cannot realize focusing imaging and obtains material surface three-dimensional data.This application adopts millimeter wave technology, meets the surface of cement, ore and other material level in harsh environment to carry out three-dimensional imaging, detects silo inner wall sticky material, material virtual hitch, cavity;The application can also be applied to composite material flaw detection field, reconstructs three-dimensional image under surface layer by penetrating surface layer structure, realizes non-destructive flaw detection to composite material.

The present invention relates to the field of fiber production technology, and in particular to a detection mechanism suitable for multi-axis positioning. The detection mechanism includes a rotating unit, a detection unit and a window. The rotating unit includes a support, a support bar and a detection bracket. The window is arranged on both symmetrical sides of a box body. The support is arranged on the left and right sides of the window and is fixedly connected to an outer frame. The support is hingedly connected to the support bar. The other end of the support bar is hingedly connected to the detection bracket. The same rotating unit is arranged on the outer frame on the opposite side of the box body. The detection unit includes a reflector and an electrical detection element. The reflector and the electrical detection element are respectively fixedly mounted on the detection brackets on both sides of the box body. The detection mechanism of the present invention realizes movement and positioning in the horizontal direction and the vertical direction respectively through the rotating unit. The detection unit composed of the electrical detection unit and the reflector completes the detection of the fiber stacking height. The overflow of the fiber is avoided by the cooperation between the detection mechanism and the feeding unit.

A class of metal halide-based metal-organic frameworks (MOFs) materials with multicolor tunable long-lasting emission and white light properties were synthesized by self-assembly of 15-crown ether-5 (CE) ligands and metal halide salts (CdX2), resulting in three complexes (15-5-CdCl2, 15-5-CdBr2, and 15-5-CdI2). In the solid state, the complexes (15-5-CdCl2, 15-5-CdBr2, and 15-5-CdI2) all exhibited near-standard white light emission under 340 nm ultraviolet radiation at room temperature, with CIE coordinates of (0.28, 0.32), (0.31, 0.39), and (0.30, 0.34), respectively. Simultaneously, they exhibit excitation-dependent room-temperature phosphorescence (RTP) ranging from blue / cyan to green / yellow, with 15-5-CdCl2 and 15-5-CdBr2 exhibiting multicolor tunable and visible light luminescence (LPL) with time-resolved luminescence lifetimes as high as 1-2 seconds. Single-crystal X-ray diffraction analysis and theoretical calculations indicate that the bright LPL of 15-5-CdCl2 and 15-5-CdBr2 originates from the aggregation state induced by the 15-crown ether-5 ligand and halogen bonds. The LPL obtained in this way can be widely used in lighting and display devices, optical recording devices, biological imaging, security systems, and other fields.

The application discloses a kind of construction and application of biosensor based on high-efficiency antifouling interface and double signal amplification, belong to photo / electro analytical chemistry, biosensing, material science and technology field.In the present application, by being modified polytannin acid doped polyaniline as antifouling film on electrode interface, resist the non-specific adsorption of interfering biomolecules in complex medium;Prepared EuTb-MOF as high-efficiency luminophore, wherein, Tb 3+ The energy of itself and ligand can be transferred to Eu 3+ , realize effective signal self-enhancement;Utilize the valence reversible conversion of Co 2+ / Co 3+ And Fe 2+ / Fe 3+ , and the synergistic catalysis of Ag NPs, promote the reduction of S2O8 2‑ , to further improve the electrochemiluminescence signal of EuTb-MOF.Based on the above strategy, the biosensor constructed has high detection sensitivity and precision, and long service life, linear range is 10fM~100nM, and detection limit is as low as 3.62fM.

Various methods and systems are provided for increasing the fractional bandwidth (618, 718, 518) of an ultrasound device for both low and high frequency applications. In one example, where the transducer array (300) comprises one or more transducer elements (310, 314, 352, 106, 304, 302), which comprise a plurality of capacitive micromachined ultrasonic transducers (cMUTs (251, 200, 302)), the fractional bandwidth (618, 718, 518) can be advantageously increased by applying different bias voltages to different groups of cMUTs (251, 302) within each transducer element (310, 352, 106, 304, 312). The ratio between the different bias voltages can be optimized to maximize the fractional bandwidth (618, 718, 518). In another example, the different bias voltages can be configured to operate a first packet (320) of cMUTs (251, 302) in a transmit mode and to operate a second packet (322) of cMUTs (251, 302) in a receive mode.

The application belongs to the technical field of inorganic laser materials, and particularly relates to a Pr ion doped gallate laser crystal material and a preparation method and application thereof. 1‑x The chemical formula of the Pr ion doped gallate laser crystal material is shown as formula 1: xPr:AB 1‑x Ga3O7, wherein A is at least one of Ca, Sr and Ba, B is at least one of Y, La, Gd and Lu, and 0 The Pr ion doped gallate laser crystal material provided by the application is a single crystal material, and can enhance the absorption and emission intensity of Pr ions according to the disordered structure of the substrate crystal itself, so that the crystal can realize higher laser output when directly pumped by blue light LD. The crystal provided by the application can be used for laser output in the visible light band, and has wide application prospects in the fields of scientific research, industrial manufacturing and military.

The utility model relates to the technical field of external wireless network cards, in particular to an external wireless network card with a built-in antenna and the antenna. The external wireless network card comprises a PCB (Printed Circuit Board), a built-in antenna and a shell, and the PCB and the built-in antenna are arranged in the shell; the built-in antenna comprises a signal radiation main body, a grounding pin, a radio frequency signal pin and a bent wiring section in a bent shape. The grounding pin, the radio frequency signal pin and the bent wiring section are connected with the signal radiation main body, the grounding pin is inserted into a GND (Ground) of the PCB, and the radio frequency signal pin is inserted into a radio frequency signal feed-in point of the PCB. According to the built-in antenna, the radiation area is increased through the bending wiring section, meanwhile, the space three-dimensional level of the built-in antenna can be improved, the overall structure of the built-in antenna is more three-dimensional, the signal transmitting and receiving capacity of the built-in antenna is improved, the bending wiring design does not need a larger space, and under the condition that the size is small, signals are good, the signal receiving distance is long, and the anti-interference capacity is high.

The invention provides a light beam synthesis scanning system based on an optical fiber laser phased array, which utilizes a large-angle high-precision light beam scanning array formed by cascading a self-adaptive optical fiber collimator (1-2) and a micro-lens array scanner (1-1) to realize rapid, efficient and large-deflection-angle confocal scanning pointing control under the action of a confocal scanning control platform (1-3). By using the phase modulator array (2-1), under the action of the co-phase synthesis control platform (2-2), stable and efficient co-phase synthesis of array light beams is realized, and finally large-angle high-precision electric control scanning of the synthesized light beams is realized. The invention has the advantages of simple and compact structure, modularization and expandability; an equivalent large aperture can be constructed by increasing the number of arrays, and the manufacturing difficulty and cost are reduced; the system has the functions of large dynamic range, high precision and rapid deflection, and can compensate the atmospheric turbulence effect in a transmitting or receiving system.

According to the technical scheme, the camping lamp is characterized by comprising a lamp holder, a lamp body is arranged at the upper end of the lamp holder, a hanging ring is installed at the upper end of the lamp body, the lamp holder is connected with the lamp body in a rotating mode, a storage battery and lamp beads are installed on the lamp body, and a hand-cranking power generation device and a photovoltaic power generation device are installed on the lamp holder. The hand-cranking power generation device and the photovoltaic power generation device are jointly connected with a vertical elastic ejector pin, the storage battery is connected with a metal sheet for the elastic ejector pin to abut against and press, the metal sheet is of an open-ring-shaped structure, and the design that the lamp holder and the lamp body are split is adopted, so that the camping lamp with the green charging function can be shortened in height and hung in a tent; and the situation that a user and the suspended lamp body are frequently collided is avoided.