91results about How to "Luminous intensity" patented technology

The invention discloses luminescent glaze for enamel painted porcelain and a preparation method and application thereof. The luminescent glaze for enamel painted porcelain comprises basic glaze for the enamel painted porcelain and a protective-glaze luminescent material, wherein the protective-glaze luminescent material is prepared by firstly mixing and then repeatedly braking the flux for the protective-glaze luminescent material and a luminescent material, and the flux for the protective-glaze luminescent material comprises the following components in percentage by weight: 42-48 percent of SiO2, 3-7 percent of SrO, 15-21 percent of B2O3, 0.2-1.2 percent of Al2O3, 3-7 percent of Li2O, 2-7 percent of Na2O, 1-3 percent of K2O, 0.6-3.8 percent of metal fluoride, 2-3.5 percent of P2O5, 0-0.5 percent of Ta2O3, 0-1 percent of Nb2O5, 0-0.5 percent of ZrO2, 0-3 percent of CeO2, 0-0.5 percent of La2O3, 0-2 percent of Y2O3, 5-10 percent of ZnO, and 0-5 percent of MgO. According to the luminescent glaze for the enamel painted porcelain provided by the invention, the thermal stability and luminescence properties of the luminescent material can be guaranteed so as to improve the luminance and luminous time of the prepared painted porcelain after irradiation, while the various characteristics of the traditional enamel painted porcelain can be maintained.

The invention discloses a titanium barium phosphate salt, and a preparation method and application thereof. A chemical formula of the titanium barium phosphate salt is Ba2-2xM2xTiP2-2yN2yO9, in the formula, M is divalent metal ions or trivalent rare earth elements; x is a mol percentage of M-substituted barium ion Ba2<+>, and x is more than or equal to 0.00001 but less than or equal to 0.5; N is one or more of vanadium ion V<5+>, zirconium ion Zr<4+>, tungsten ion W<5+> and molybdenum ion Mo<5+>; and y is the mol percentage of N-substituted phosphorus ion P<5+>, and y is more than or equal to 0.00001 but less than or equal to 0.5. The titanium barium phosphate salt is high in crystallinity, good in lighting quality, low in cost, simple in preparation process and free of pollution. Under exciting of X-ray, light output of Ba2TiP2O9 is equal to that of a commercial scintillator bismuth germinate Bi4Ge3O12; a lighting peak position is excellently matched with a photomultiplier tube; and the titanium barium phosphate salt can be used for detecting energetic particles, X-ray computer tomography, positron emission tomography technology, security checking, industrial detection and nuclear medical imaging.

The invention discloses a peroxynitrite ion detection probe as well as a preparation method and application thereof. The peroxynitrite ion detection probe comprises a fluorescent nano material and an enzyme, wherein the enzyme is combined with the fluorescent nano material, has an oxidation-reduction property and can be selectively oxidized by peroxynitrite ions to form an oxidized enzyme; after the fluorescent nano material is radiated by excited light, electrons in an excited state can be transferred to the oxidized enzyme and cannot turn back to a base state, and then fluorescent light of the fluorescent nano material can be quenched. As an inorganic light-emitting material is adopted as fluorophore, the peroxynitrite ion detection probe disclosed by the invention is intense in light emission, good in stability and less prone to photo-bleach; the surface of the probe is modified with the enzyme with oxidation-reduction property, and the enzyme can be selectively oxidized by ONOO<->, so that the probe is not interfered by other active oxygen (ROS) or active nitrogen (RNS), and is excellent in specificity.

The invention discloses an LED lamp and a control circuit thereof. The control circuit comprises a photosensitive resistor, a light adjusting potentiometer and a control module, wherein the photosensitive resistor and the light adjusting potentiometer are connected in series between a power supply input end and a grounding end; the adjustable end of the light adjusting potentiometer is connected with the first input end of the control module; the control module is used for processing and analyzing a voltage signal received by the first input end and driving an LED light source to emit light with corresponding luminance; in the control module, a light adjusting gear setting unit receives a first voltage signal input by the first input end due to the change of the light adjusting potentiometer, and chooses the corresponding duty ratio of a PWM modulation wave; a luminance sensing adjusting unit receives a second voltage signal input by the first input end due to the change of the photosensitive resistor, and chooses the corresponding duty ratio of the PWM modulation wave; and a control signal generating unit generates the PWM modulation wave according to the duty ratio chosen by the light adjusting gear setting unit or the luminance sensing adjusting unit. According to the technical scheme provided by the embodiment of the invention, the LED lamp can automatically adjust the light with the change of the environment luminance.

The invention provides a polymer quantum dot capable of detecting heavy metal ions. The polymer quantum dot is based on the principle that an amino group and a mercapto group coordinate metal ions to make polymer quantum dot fluorescence quenched or strengthened, a simple and low-cost high-temperature hydrothermal synthesis method is adopted, the biological toxicity of a polymer is low, the size is small, light is strong, and the polymer quantum dot has very high selectivity and sensitivity on heavy metal ions such as Hg<2+>, Cu<2+>, Cr<6+> and Ag<+>.

The invention discloses a blue light-emitting material and a preparation method thereof. The blue light-emitting material has a chemical composition expression formula of Ba1-xEuxCa2MgSi2O8, wherein Eu<2+> ( bivalent rare earth europium ion) is an active ion, and x is the molar percentage coefficient of the active ion Eu<2+> relative to alkaline earth metal ion Ba<2+> and is not less than 0.001 and not more than 0.10. According to the invention, the preparation method is simple; and the prepared novel rare earth light-emitting material can emit blue light under the excitation of ultraviolet, has stronger light intensity than traditional commercial blue fluorescent powder BaMgAl10O17:Eu<2+> (BAM), and also has relatively better luminance intensity under the vacuum ultraviolet excitation.

A light emitting diode and a method of fabricating the same are described. The light emitting diode has: a hole transport layer, an active layer and an electron transport layer. The active layer is disposed on the hole transport layer, and the active layer has a mesophase structure of an organic amine compound and a perovskite structure compound. The electron transport layer is disposed on the active layer.

The invention provides a preparation method of a one-dimensional SiO<2> luminescent material with europium ions doped and the dimension controllable and belongs to the field of inorganic luminescent materials. According to the method, an electrostatic spinning method is adopted, and the high-temperature calcination after-treatment is combined, one-dimensional SiO<2> fibers with europium doped are prepared out, and the method is characterized in that the fibers are synthesized by one step, the yield is high, the shape and appearance are uniform, Eu<3+> ions exist in the fibers stably, the washing process is not required, and impurity components can be completely removed through the high-temperature calcination in air, thereby pure and homogeneous SiO<2> : Eu<3+> fibers are obtained. Under the ultraviolet excitation, the fibers present obvious transition from <5>D<0> to <7>F<2> of the Eu<3+> ions, and the fibers are in bright red under the illumination of an ultraviolet lamp. The preparation method is great in operability and good in reproducibility, an obtained product is stable in performance and excellent in light-emitting, and the possibility of applying one-dimensional fluorescent materials with rare-earth ions doped to preparation of opto devices and optical sensors in future is provided.

The invention discloses white-light fluorescent powder as well as a preparation method and application thereof, the white-light fluorescent powder is selected from at least one of substances with a chemical general formula shown in a formula I: Cs2Sn1-xTexCl6, wherein the x is greater than 0 and less than 1. The white light fluorescent powder is stable in structure and performance, simple in preparation process and good in repeatability.

The invention discloses 2,7-bis(2,4-dimethoxyphenyl)diphenylmethylene fluorene, a trimer compound as well as a preparation method and application thereof. The 2,7-bis(2,4-dimethoxyphenyl)diphenyl methylene fluorene in an AIE material molecule is used for forming, through connection of methylene, a cyclic trimer blue light material molecule, wherein the tetraphenyl ethylene is a typical AIE molecule, and the performance and the application range of AIE can be greatly expanded by constructing the molecule containing the tetraphenyl ethylene skeleton. The monomer containing the tetraphenyl ethylene skeleton and the cyclic trimer can be used as AIE luminescent materials, the novel macrocyclic compound and the monomer have good AIE luminescent properties, and the emission wavelength of fluorescence is 373 nm. In addition, the material does not emit light in a benign solvent, a light emitting phenomenon can occur along with gradual addition of a benign solvent, when the benign solvent accounts for 70% of the total volume, the light emitting is strongest and is enhanced by nearly 1000 times, and the material belongs to a typical AIE material.

The invention relates to an automobile lamp which comprises an LED light-emitting component, a circuit board, a lamp shell, a cooling ring, a lamp holder, a reflecting cover and a front lens. The LED light-emitting component is fixedly installed at the front end of the circuit board, the lamp holder is fixedly installed at the rear end of the circuit board, the cooling ring is arranged on the outer periphery of the circuit board, the rear end of the cooling ring is fixedly connected with the lamp holder, the front end of the cooling ring is detachably connected with the reflecting cover which is located on the outer periphery of the LED light-emitting component, the lamp holder is detachably installed at the rear end of the lamp holder, and the front lens is fixedly installed at the front end of the reflecting cover. Compared with the prior art, the automobile lamp is good in lighting effect, high in light intensity, good in cooling and long in service life.

The invention relates to the technical field of non-contact micro-area temperature detection measurement and discloses a nano probe for biological micro-area and photothermal therapy and a synthesis method and a detection method thereof. Upconversion nanoparticles adopt optical rate detection temperature and are excited by 808 nm laser, heat effect interference of water absorption is avoided, 808nm two-photon near-infrared direct excitation and two-excitation process based on dye energy resonance transfer excitation effectively improve the luminescent conversion efficiency and the temperaturemeasurement sensitivity of the nanoparticles. By applying the nano probe for biological micro-area and photothermal therapy and the synthesis method and the detection method, the non-contact measurement of the temperature of a biological cell micro-area or regional temperature can be achieved, the redundant energy during the strong laser excitation can be converted into heat by adjusting the excitation light power and utilizing the strong absorption of a dye, and the accurate thermal shock and simultaneous temperature monitoring for a tumor photothermal therapy can be achieved.

A light emitting diode includes a substrate, an n-type semiconductor layer, a p-type semiconductor layer, an active layer, a first electrode, and a second electrode. The n-type semiconductor layer is located between the substrate and the p-type semiconductor layer. The active layer is located between the n-type semiconductor layer and the p-type semiconductor layer. The wavelength of light emitted by the active layer is λ, and 222 nm≦λ≦405 nm. The active layer includes i quantum barrier layers and (i−1) quantum wells, each quantum well is located between any two quantum barrier layers, and i is an integer greater than or equal to 2. The thickness of each of the quantum barrier layers counting from the p-type semiconductor layer is T₁ to T_i, and T₁ is greater than T₂ and T₃, or T₁=T₂>T₃, or T₁>T₂>T₃.

The invention discloses a scintillation crystal of sodium caesium tungstate, and a preparation method and application thereof, wherein the chemical compositions of the crystal is Cs2-xNaxW2O7,wherein X is more than 0 and less than 2. The poly-crystals containing the compositions is prepared through the solid phase sintering method, and the single crystals containing the compositions is prepared with Bridgman Method. The crystal of sodium caesium tungstate Cs2-xNaxW2O7 with stable performance is the scintillation material with intrinsic illumination, without any doped ion, the illumination of the product excited by X-rays is strong, and the wavelength of the light couples well with the electron-multiplier phototubes of the prior art.

The invention discloses a method for synthesizing organic-inorganic hybrid perovskite monocrystals. The method comprises the steps: 1) dissolving lead bromide in hydrobromic acid, preparing a hydrobromic acid solution of lead bromide with the mass-volume ratio of 0.01 g/mL, and recording the solution as a solution A; 2) adding N,N-dimethyl ethylenediamine to the solution A to obtain a solution B,wherein the molar ratio of lead bromide to N,N-dimethyl ethylenediamine is 1:1; and sealing a container mouth with a thin film, and carrying out ultrasonic treatment for 8-10 min; 3) carrying out assisted crystallization with acetone: connecting a constant pressure funnel loaded with acetone with a container containing the solution B, closing a cock of the constant pressure funnel, standing for 2-3 d, and removing the liquid to obtain monocrystals; and 4) washing the obtained crystals with acetone, carrying out vacuum drying, and thus obtaining the perovskite monocrystals. The solid light-emitting monocrystals can be synthesized by trace reaction raw materials and can be implemented in general laboratories, and a green, low-cost and highly operable method is provided for volatile solvent diffusion-assisted monocrystal growth.

The invention aims to provide a decorating body and a decoration display device employing the decorating body, by which thinning can be realized and stereoscopic luminescent patterns can be identified visually, in contrary to the fact that stereoscopic patterns cannot be uniformly displayed previously. The decorating body is characterized by comprising a first light guiding body (1) used for guiding light from a light source (LE1) and a light permeating body (2) arranged on the upper surface side of the first light guiding body (1) and allowing light emitted from the first light guiding body (1) to permeate through. The surface of the first light guiding body (1) is provided with a first pattern (11) which is equipped with multiple first pixels (1g) at stipulated intervals (P1). The surface of the light permeating body (2) is provided with a second pattern (12) which is equipped with multiple second pixels (2g) at stipulated intervals (P2) different from the intervals of the first pattern (11). The first pixels of the first pattern enable the light to scatter, while the second pixels of the second pattern shield the light.

The invention discloses a nitrogen point-based room-temperature phosphorescent material and a preparation method and application thereof. The preparation method comprises the following steps: taking 2-azido imidazole with high reaction activity (azido at the 2 position) as a precursor, carrying out self-polymerization and nucleophilic polymerization in the presence of a liquid nucleophilic reagentto obtain a fluorescent nitrogen point; and enabling the fluorescent nitrogen point to be compounded with a substrate material so as to prepare the room-temperature phosphorescent material. The method for preparing the room-temperature phosphorescent material is simple, controllable, low in energy consumption, convenient to operate, not harsh in condition, good in reproducibility and beneficial to expanded production. The room-temperature phosphorescent material prepared by the method has the characteristics of strong luminescence and good stability, and still has excellent room-temperature phosphorescent characteristics, ultra-long phosphorescent service life and long afterglow time in an amorphous or glassy state; the material can be applied to the fields of environmental detection andbiochemical analysis, and can also be used for preparing fluorescent ink for ink-jet printing, anti-counterfeiting marks and the like.

A sensing light-emitting wild fish catching cage is characterized in that a steel framework is square, one corner of the top end of the steel framework is connected with a hanging nose, a square frame on the outer side of the steel framework is wrapped by steel wire meshes, two ends of the steel framework are respectively connected with a fish inlet, each fish inlet is connected with an inner inverted beard in an inward extending manner, a sensor, a fluorescent ring and a bait bag are arranged in the middle of the inner bottom of the steel framework of the cage, the sensor and the fluorescent ring are connected onto the steel framework through pull ropes, one side of the top end of the steel framework is connected with a fish pouring door, and the fish pouring door is hooked on the steel framework through door hooks.