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45results about How to "Promote Applied Research" patented technology

Integrated single-fiber droplet manipulator

The invention provides an integrated single-fiber droplet manipulator. The integrated single-fiber droplet manipulator is characterized in that the device is composed of a section of multi-core optical fiber comprising a cladding and a fiber core, the fiber end is ground to form a cone frustum fiber end, the end face of the cone frustum fiber end is provided with a layer of liquid injection smoothporous surface film doped with a photosensitive material, and the film is provided with an array groove structure filled with a lubricating agent; when light waves transmitted by the fiber core are reflected by the cone frustum fiber end and then gathered to the liquid injection smooth porous surface film on the end face, the light waves are absorbed and converted into heat energy by the photosensitive material, a temperature gradient field is formed in an irradiation area, droplets attached to the liquid injection smooth porous surface film generate wetting gradient force under the influenceof the temperature gradient field, the droplets are affected by force, the posture of the droplets changes to generatesdirectional sliding, and finally, the droplets are controlled under the action of different temperature gradient fields by controlling the power of the light injected into the fiber core. The manipulator can be applied to the fields of hydromechanics, biology, medicine and the like.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Polyoxometalate compound

InactiveCN1765751AImprove reducibilitySpecial network structureSpace groupCell parameter
The poly metal acid salt compound has molecular formula as Na14[MoVI126MoV28O462H14(H2O)68]íñca.300H2O, belongs to orthorhombic crystal system with space group as Cmca and single cell parameters as aú¢50.6844(4)ú¼bú¢56.3056(1)(cú¢30.6337(1)ú¼Vú¢87422.9(8)(3)ú¼Zú¢4. This product uses elementary huge-wheel ring shape as basic unit and Oxygen Bridge to link into two-dimension layer structure of calandria form, which can be used in adsorption material or solid fuel cell.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI

Infrared two-photon coincidence measurement device and method based on periodically poled lithium niobate waveguide

The invention discloses an infrared two-photon coincidence measurement device and method based on a periodically poled lithium niobate waveguide, and the device comprises an infrared laser device, the laser emitted by the infrared laser device sequentially passes through an optical fiber attenuator and a polarizer and then enters an optical fiber beam splitter, and the incident light is divided into two light beams; one beam of light is received by a single-photon detector after being subjected to two-photon up-conversion through a PPLN waveguide to generate visible light; and the other beam of light is received by a light intensity detector for calculating the light intensity entering the PPLN waveguide, and the infrared two-photon up-conversion efficiency of the corresponding two-photon coincidence measurement device is obtained by comparing the counting rate of the single-photon detector with the detection dependency relationship of the light intensity detector. The infrared two-photon coincidence detector overcomes the defects that an existing infrared single-photon detector is low in efficiency and large in noise, infrared two-photon coincidence measurement can be achieved more efficiently, and second-order interference experiments and application research of infrared photons are facilitated.
Owner:XI AN JIAOTONG UNIV

Electric conduction composite material with poly-2, 3-dimethylaniline/polyaniline core shell structure and preparation method of electric conduction composite material

The invention relates to an electric conduction composite material with a poly-2, 3-dimethylaniline/polyaniline core shell structure, and a preparation method of the electric conduction composite material. In the composite material, the poly-2, 3-dimethylaniline is used as a core, and the polyaniline is used as a shell. The preparation method comprises the following steps: the poly-2,3-dimethylaniline is firstly prepared by a solution polymerization process, and then is filtered, washed, dried and ground to obtain the powdered poly-2,3-dimethylaniline; and the powered poly-2, 3-dimethylaniline is used as the core, polymerization is carried out to the surface of the powered poly-2, 3-dimethylaniline by the solution polymerization process or emulsion polymerization process, and then a product is filtered, washed, dried and ground to obtain the electric conduction composite material with the poly-2, 3-dimethylaniline/polyaniline core shell structure. In the electric conduction composite material with the poly-2, 3-dimethylaniline/polyaniline core shell structure, the electric conductivity of the poly-2, 3-dimethylaniline/polyaniline is remarkably improved, thereby being beneficial tobeing applied to the field of sensors, electric conductive devices, electrode active materials and the like.
Owner:CHONGQING UNIV +1

Method and system for improving adversarial defense capability of Bayesian neural network

The invention provides a method and system for improving the adversarial defense capability of a Bayesian neural network, and relates to the technical field of Bayesian neural networks in the deep learning direction and adversarial defense, and the method comprises the following steps: a network training step: inputting initial data, and optimizing a cross entropy loss function and the KL divergence between parameter distribution and prior distribution to obtain a network model; training the initial data; and a robustness enhancement step: taking the parameters of the Bayesian neural network as input, calculating and optimizing the mathematical expectation of the spectral norm of the network parameter matrix, and reducing the sensitivity of the network to various noises according to the optimized mathematical expectation, thereby improving the adversarial defense capability of the Bayesian neural network model to the noises. According to the invention, the adversarial robustness of the Bayesian network model can be effectively improved, and the application prospect of the network model in practical problems is effectively enhanced; the output uncertainty of the network model is effectively reduced, the prediction of the network to the adversarial sample is more consistent, and the noise resistance of the network model is improved.
Owner:SHANGHAI JIAO TONG UNIV

Method for preparing nano material layer by self-assembling diphenylacetylene on surface of metal single crystal

The invention provides a method for preparing a two-dimensional porous nano material based on diphenylacetylene molecule self-assembly. The method aims to prepare the two-dimensional nano material with a uniform porous structure on the surface of the single crystal by utilizing diphenylacetylene molecule self-assembly under an ultrahigh vacuum condition. The method comprises the following steps that 1, argon ion sputtering is carried out on a metal single crystal substrate, then annealing is carried out, and the sputtering and annealing processes are repeated; and 2, the metal single crystal treated in the step 1 is placed in an ultrahigh vacuum preparation cavity and heated to 50-53 DEG C, then diphenylacetylene molecules are deposited on the surface of the metal single crystal under the room temperature condition, the deposition time is 3-5 s, and the two-dimensional porous nanometer material is prepared. The method is simple in process, and the nanometer material with the uniform porous structure can be obtained. The pore size is 3.37 nm to 3.46 nm, the thickness of the pore wall is 0.7 nm to 1.2 nm, the height is 115 pm to 125 pm, and the coverage rate can reach 18% to 30%.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

In situ cultivation device, and method of high through-put separating and screening microorganism

The invention discloses an in situ cultivation device, and a method of high through-put separating and screening microorganism. The in situ cultivation device comprises an in situ bacterium separatingdevice, the in situ bacterium separating device comprises a vacuum chassis, a clamping lower layer, a chip, a clamping pressing sheet and a clamping upper layer, the upper part of the vacuum chassisis provided with a vacuum groove, and lower part of the vacuum chassis is provided with a circular cylinder ring communicating with the vacuum groove, the clamping lower layer is connected with the top of the vacuum chassis in a fastening mode, and a base plate of the clamping lower layer is provided with through holes communicating with the vacuum groove, the chip is placed on the base plate of the clamping lower layer, the chip is evenly provided with a plurality of cultivation through holes, the clamping pressing sheet is arranged on the chip in a pressing mode, the clamping pressing sheetis provided with a plurality of sample-adding holes one-one corresponding to the cultivation through holes on the chip, the clamping upper layer is fixedly arranged above the clamping lower layer, andthe clamping upper layer is provided with a sample-adding window.
Owner:PEKING UNIV

Single-pixel imaging method and system based on terahertz free electron laser

The invention relates to the technical field of terahertz imaging, in particular to a single-pixel imaging method and system based on terahertz free electron laser, and the main points of the technical scheme are that the method comprises the following steps: S1, providing a single-pixel imaging system based on terahertz free electron laser; and S2, on the single-pixel imaging system, obtaining a target object image according to a generalized orthogonal tracking algorithm. The method has the advantages of being good in reconstructed image quality, high in peak signal-to-noise ratio and high in structural similarity.
Owner:GUANGDONG UNIV OF TECH

ADSS (all dielectric self supporting optic fiber cable) typhoon resistance estimation method at coastal region

An ADSS (all dielectric self supporting optic fiber cable) typhoon resistance estimation method at a coastal region comprises following steps of S1, the nonoccurrence probability of an ADSS fault is calculated with a formula: P=A*sigma (X1, X2, X3...); A=A1*A2*...*An; in the formula, P is nonoccurrence probability of the ADSS fault and is in a hundred mark system; an ADSS nonoccurrence fault estimation coefficient is represented, a nonoccurrence fault estimation coefficient of estimation objects is represented by An, if an occurrence fault is non-maintainable or directly affects typhoon resistance, An is equal to 0, if the occurrence is maintainable or capable of recovering typhoon resistance, An is equal to 1; X1, X2, X3 ... respectively represent the weights of the occurrence fault probabilities of the estimation objects; the estimation objects comprise an ADSS self fault, an ADSS electrified corrosion state, an ADSS optical fiber attenuation state, an ADSS design standard application status quo, an ADSS sag state, applicable status quo of matched tools and engineering acceptance quality. The method promotes the application research of the ADSS in a typhoon environment, solves the problem existing in the application, and has an important significance in safe operation and development of power communication networks.
Owner:POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD

Liquid crystal state composite fiber membrane as well as preparation and application thereof

The invention discloses a liquid crystal state composite fiber membrane as well as preparation and application thereof. The method comprises the following steps of mixing cholesteryl nonanoate and cholesteryl oleyl carbonate according to a formula ratio, heating until the temperatures of the two liquid crystal compounds reach the clearing point temperature or above, fully stirring until the two liquid crystal compounds are fully mixed, and cooling to obtain powder, so as to obtain CN-COC binary blended liquid crystal; and then adding the liquid crystal and a polyurethane elastomer into dichloromethane according to a formula ratio, stirring a mixture until solutes are completely dissolved, and obtaining the composite fiber membrane through an electrostatic spinning technology. The liquid crystal state composite membrane not only has liquid crystal state ordered fluidity and good biological performance, but also has the elastic characteristic of polyurethane, has good biological performance and mechanical performance, and can be used for constructing a biological membrane model imitating the extracellular matrix of the living body, and the influence of the liquid crystal performance of the living body on cell behaviors is researched on the basis, so that theoretical and technical supports are provided for ascertaining the interaction between the cells and the matrixes in the microenvironment of the living body.
Owner:FOSHAN UNIVERSITY

A method for assessing anti-typhoon ability of adss in coastal areas

An ADSS (all dielectric self supporting optic fiber cable) typhoon resistance estimation method at a coastal region comprises following steps of S1, the nonoccurrence probability of an ADSS fault is calculated with a formula: P=A*sigma (X1, X2, X3...); A=A1*A2*...*An; in the formula, P is nonoccurrence probability of the ADSS fault and is in a hundred mark system; an ADSS nonoccurrence fault estimation coefficient is represented, a nonoccurrence fault estimation coefficient of estimation objects is represented by An, if an occurrence fault is non-maintainable or directly affects typhoon resistance, An is equal to 0, if the occurrence is maintainable or capable of recovering typhoon resistance, An is equal to 1; X1, X2, X3 ... respectively represent the weights of the occurrence fault probabilities of the estimation objects; the estimation objects comprise an ADSS self fault, an ADSS electrified corrosion state, an ADSS optical fiber attenuation state, an ADSS design standard application status quo, an ADSS sag state, applicable status quo of matched tools and engineering acceptance quality. The method promotes the application research of the ADSS in a typhoon environment, solves the problem existing in the application, and has an important significance in safe operation and development of power communication networks.
Owner:POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD

A kind of ultra-thin silicon nanosheet photocatalyst and its preparation method and application

The invention discloses an ultra-thin silicon nanosheet photocatalyst and its preparation method and application. It uses crystalline silicon powder as a precursor, disperses it into a solvent after being dipped in an ultra-low temperature liquid gas, and then assisted the liquid phase by ultrasonic waves. The ultra-thin silicon nano-sheet suspension is obtained by peeling off, and after the suspension is centrifuged and freeze-dried, an ultra-thin silicon nano-sheet photocatalyst with a thickness of 0.3-2.1 nm and a size of 0.1-6.5 μm is obtained. When the silicon nanosheets obtained in the present invention are used for visible light photocatalytic hydrogen production, the hydrogen production efficiency can reach 5.102 mmol h ‑1 g ‑1 , the photocatalytic hydrogen production efficiency is about 93 times higher than that of the original crystalline silicon powder. The method for preparing silicon nanosheets disclosed by the invention is simple to operate, low in cost, and can be prepared in large quantities, and the obtained silicon nanosheets have excellent visible-light photocatalytic hydrogen production performance, providing a new method for building stable and efficient photolysis of water for hydrogen production materials. train of thought.
Owner:HEFEI UNIV OF TECH
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