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50results about How to "Realize in situ observation" patented technology
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High-temperature in situ tension-fatigue test system and test method thereof
ActiveCN104913981AReliable principleSimple structureMaterial strength using tensile/compressive forcesElectric machineryFatigue testing
The invention relates to a high-temperature in situ tension-fatigue test system and a test method thereof, and belongs to the technical field of scientific instruments and material test. The test system comprises a tensile loading and detecting unit, a fatigue loading and detecting unit, an in situ observation unit, and a high temperature loading and detecting unit. The tensile loading and detecting unit is powered by a motor, and realizes quasi-static loading through worms, gears and a ball screw; a piezoelectric ceramic drives a flexible hinge to realize medium and low frequency reciprocating motion in the tensile axial direction of a test piece in order to realize fatigue loading; and an optical microscope dynamically monitors the test process in order to realize in situ observation. The test system has the advantages of reliable principle, important scientific meaning, good application values, and accurate test and analysis of the relationship among mechanical performances of a test piece material, the microstructure of the material and the deformation damage mechanism in high temperature environment.
Owner:JILIN UNIV
Seabed lateral deformation and sliding observation device and method
ActiveCN105301193AObvious lateral deformationTest accurateMaterial analysisOcean bottomMeasurement device
The invention provides a seabed lateral deformation and sliding observation device and method. The seabed lateral deformation and sliding observation device comprises an auxiliary ship and a seabed observation system, wherein the auxiliary ship is provided with an offshore drilling rig and a lifting device, and the seabed observation system is provided with a displacement measurement device, a data acquisition sealing cabin and a subsidence prevention frame. The displacement measurement device is of a rod joint combination structure with a cable, each joint point is provided with a three-axis acceleration sensor, and the displacement deviation of each joint point can be calculated according to the posture change of the corresponding three-axis acceleration sensor. The method includes the steps that the auxiliary ship is utilized for drilling a target point position so that the seabed observation system can be arranged, the seabed lateral deformation and sliding are observed and recorded through the displacement measurement device in the seabed observation system, fishing and recycling are conducted after the in-situ observation cycle is ended, and the deformation amount and the deformation process of seabed soil can be obtained by analyzing data. The seabed lateral deformation and sliding observation device and method provide a new thought and a new method for seabed lateral deformation and sliding observation and have the advantages of being long in observation cycle, capable of being repeatedly used, wide in observation range, high in accuracy and the like.
Owner:OCEAN UNIV OF CHINA
Variable-temperature tension-torsion combined-load in-situ testing device and method for mechanical properties of materials
ActiveCN107607390ALarge loading forceImprove test accuracyMaterial strength using tensile/compressive forcesMaterial strength using steady torsional forcesTemperature loadEngineering
The invention relates to a variable-temperature tension-torsion combined-load in-situ testing device and method for mechanical properties of materials, and belongs to the field of precise instruments.The device adopts a vertical type structure, and comprises a tension unit, a torsion unit, a force and displacement detection unit, a high- / low-temperature loading system and a sealed cavity. The mechanical properties of the materials under the loading of a single tension or torsion load in a variable-temperature environment can be tested, and particularly can also be tested in a tension and torsion combined load mode in the variable-temperature environment. A variable-temperature load module carries out loading by adopting the high- / low-temperature loading system, continuous temperature changing from -100 DEG C to 300 DEG C can be achieved, and thus, a complicated environment of the materials in an actual service environment is simulated. A biaxial-tension and forward-and-reverse-torsionload test is ingeniously achieved through a symmetrical mechanical structure, the microarea position invariance of in-situ monitored materials is thoroughly guaranteed, and thus, mechanical behaviorsand damage mechanisms of specific microareas of specimen materials can be dynamically monitored in situ.
Owner:JILIN UNIV
Mechanical-thermal composite in-situ loading system
InactiveCN103091178AAchieve in-situ compressionRealize in situ observationMaterial strength using tensile/compressive forcesBall screwCoupling
The invention discloses a mechanical-thermal composite in-situ loading system which comprises a stepping motor connected with the base, wherein a motor shaft of the stepping motor is connected with a bidirectional ball screw through a coupler; a left lead screw nut and a right lead screw nut are in threaded connection on the bidirectional ball screw; a left objective table and a right objective table are respectively arranged on the left lead screw nut and the right lead screw nut; a left end support and a left clamp are fixedly connected to the left objective table; one end of the base is fixedly connected with the left objective table and the other end of the base is freely suspended; a force sensor is arranged between the left end support and the left clamp; an electric heating film is fixed on the left clamp; a right clamp is fixedly connected to the right objective table; a grating ruler reading head of a grating ruler displacement sensor is fixed on the one side face of the right objective table; a grating ruler main body of the grating ruler displacement sensor is adhered to the base; and the right clamp can press a test piece which is arranged on the electric heating film of the left clamp. The in-situ loading of submicron scale can be realized.
Owner:TIANJIN UNIV
Self-powered marine three-dimensional online observation system
InactiveCN108423126ARealize in situ observationLong-term continuous in-situ observationBatteries circuit arrangementsWaterborne vesselsEngineeringBuoy
The invention relates to a self-powered marine three-dimensional online observation system which is composed of a buoy, a wind power generator, a solar panel, a satellite communication module, a wave-activated generator, an optoelectronic composite cable, an underwater observation instrument, an underwater float ball, a bottom-supported underwater platform, a uninterruptible power supply (UPS) andan ocean current generator. The system acquires environmental parameters in the seawater by utilizing the underwater observation instrument, and transmits the obtained seawater environmental parameters to shore-based station through the satellite communication module. The system obtains wind energy, solar energy, wave energy and ocean current energy from the environment by utilizing the wind power generator, the solar panel, the wave-activated generator and the ocean current generator and converts the energy into electric energy for use by the system itself, and self power supply and long-term continuous in-situ observation of the marine three-dimensional online observation system are achieved.
Owner:TONGJI UNIV
Method for preparation of nanometer clearance electrode
InactiveCN101226879ARealize in situ observationPrecise and effective controlSemiconductor devicesPhysicsNanometre
A process for preparing nanometer-spaced electrodes comprises steps of preparing electrode pairs with larger gaps on nano materials which can not be destructed by electron beams, adsorbing raw material molecules induced and deposited by the electron beams on the surface of the electrode pairs, focusing the electron beams on gap areas of the electrode pairs and stopping irradiation by the electron beams to prepare and obtain the nanometer-spaced electrodes, when the gaps of the electrodes achieve the required width. Compared with the traditional process, the gaps of the electrodes can be observed in-situ in the process of preparation of the invention, thereby accurately controlling the gaps of the nanometer-spaced electrodes. Simultaneously, the invention has the advantages of convenient operation, simplicity and feasibility and high success rate, which is favorable for increasing preparing efficiency of the nanometer-spaced electrodes. The prepared nanometer-spaced electrodes have quite wide gap range from 2 nanometers to 100 nanometers, which is extremely significant for the control and application of nano and molecular devices.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Multi-energy complementary power supply ocean observing device
InactiveCN105346692AHigh device independenceAvoid the impact of power supply capacityMachines/enginesEngine componentsSolar powerAcoustic release
The invention relates to a multi-energy complementary power supply ocean observing device, which belongs to the field of ocean engineering equipment. The multi-energy complementary power supply ocean observing device comprises a solar power generating device, a main buoy, a floating body, a cable, an anchor chain, a counterweight, a wave power generation module, a floating ball and an observation device, wherein the observation device comprises a buoyancy chamber, a supporting frame, a signal transmitter, a control chamber, a battery chamber, a acoustic doppler current profiler, a conductivity-temperature-depth system and an online pH detector. The multi-energy complementary power supply ocean observing device is characterized by further comprising a power generation adjusting chamber, a damping disc, a transparent sealing chamber and an acoustic releasing device. During working, the floating body moves up and down under an effect of waves, the main buoy moves with small amplitude under an effect of the damping disc, and the power is generated by means of relative motion between the floating body and the buoy. Electric powers generated by the solar power generating device and the wave power generating device are sent to the observation device after being treated by the power generation adjusting chamber. According to needs, the special observation device can be placed in the transparent chamber. During recycling, a signal is transmitted to the acoustic releasing device, the counterweight is released, and the observation device rises to the sea surface under an effect of buoyancy.
Owner:SHANDONG UNIV
In-situ liquid environment mechanics test platform of transmission electron microscope
PendingCN110044700ARealize in situ observationRealize Mechanical TestingMaterial strength using tensile/compressive forcesMicro nanoCorrosion
The invention relates to the field of raw material in-situ micro-nano experiment platforms and provides an in-situ liquid environment mechanics test platform of a transmission electron microscope. Thein-situ liquid environment mechanics test platform comprises a sample rod and a loading platform, wherein the loading platform comprises a lower chip, an upper chip and a loading device; a first groove is formed in the upper surface of the lower chip; a groove is formed in the bottom surface of the first groove; a lower film window and two through holes are formed in the bottom surface of the groove; a second groove and an upper film window are formed in the lower surface of the upper chip; the second groove and the first groove are used for forming a receiving space for mounting the loadingdevice; a thermal resistor is arranged on the upper surface of the upper chip; the lower surface of the upper chip is connected with the upper surface of the lower chip; the lower surface of the loading device is connected with the bottom surface of the first groove; a driving beam is arranged on the loading device; a sample loading area is arranged in the driving beam; the lower film window, thesample loading area and the upper film window are centered. The in-situ liquid environment mechanics test platform can achieve mechanics test of samples in the liquid corrosion environment; the problem that the transmission electron microscope is incapable of effectively carrying out in-situ mechanics test in the liquid environment at present is solved.
Owner:BEIJING UNIV OF TECH
Method for realizing three-dimensional imaging of symmetrical micro/nano sample through single X-ray measurement
InactiveCN103487452AImprove experimental efficiencyImprove sample utilizationMaterial analysis using radiation diffractionSpatial OrientationsSymmetry operation
The invention discloses a method for realizing three-dimensional imaging of a symmetrical micro / nano sample through single X-ray measurement. The method comprises the following steps: by taking a coherent X-ray diffraction microscope as imaging equipment and utilizing the characteristics of free electron laser all-coherence, high flux and short pulse of X ray, acquiring two-dimensional diffraction data of the symmetrical micro / nano sample under single pulse irradiation, calculating an equivalent line of the diffraction data of the sample according to crystallographic symmetry characteristics of the symmetrical sample to determine spatial orientation of the sample, performing symmetry operation of a crystallographic point group of the sample on the two-dimensional diffraction data by utilizing the spatial symmetry of the sample to obtain three-dimensional diffraction data of the sample, and performing phase retrieval and image reconstruction on the three-dimensional recombinant diffraction data according to an oversampling and iterative algorithm to finally obtain a three-dimensional structure of the symmetrical sample. According to the method, three-dimensional reconstruction of the sample can be realized through single measurement only, the experiment efficiency of three-dimensional imaging is effectively improved, and a new thought is provided for enriching a three-dimensional imaging method.
Owner:SHANDONG UNIV
Multifunctional uniaxial tensile test device for microstructure in-situ online observation
ActiveCN105675396AIngenious designImprove reliabilityMaterial strength using tensile/compressive forcesMicrostructureBiomedical engineering
The invention relates to a multifunctional uniaxial tensile test device for microstructure in-situ online observation. The device comprises a rack, a power transmission mechanism, a clamping mechanism and a force measurement mechanism, wherein the clamping mechanism comprises three detachable fixing bases corresponding to a pair of sliding tables and fixation bases, three pins and three insulating washers; the detachable fixing bases are in an inverted-T shape, can be mounted on top surfaces or side surfaces of the sliding tables / the fixation bases through concave holes in the sliding tables and the fixation bases and are fixed through the pins; an upper clamping block and a lower clamping block used for clamping a test sample are fixed on the first two detachable fixing bases; the three insulating washers separate the three detachable fixing bases from the corresponding sliding tables or the fixation bases; the clamping mechanism and the force measurement mechanism are mounted at the upper parts of the sliding tables and the fixation base at the right end of a screw. The test sample keeps balanced, and microstructure in-situ observation is performed in the horizontal plane of the test sample in the tensile process; the clamping mechanism and the force measurement mechanism are mounted on side surfaces of the sliding tables and the fixation base at the right end of the screw, the test sample stands on one side, and the microstructure in-situ observation in a side plane of the test sample can be realized in the tensile process.
Owner:SHANGHAI JIAO TONG UNIV
Full-strain measurement type in-situ nanometer impress/scratch testing device
ActiveCN102928308ARealize the scoring functionRealize in situ observationInvestigating material hardnessDiffractometerX-ray
The invention relates to a full-strain measurement type in-situ nanometer impress / scratch testing device, belonging to the field of an electric integrated precise scientific instrument. The full-strain measurement type in-situ nanometer impress / scratch testing device comprises a macro-adjustment mechanism, a precise pressing unit, a load and displacement signal detecting unit, and a scratch driving unit; the macro-adjustment mechanism is mounted on a base; the precise pressing unit is connected with an x direction sliding table of the macro-adjustment mechanism through a transition connection board; the load and displacement signal detecting unit comprises two groups of eight strain sheets; the strain sheets are respectively mounted on a flexible hinge and an x direction flexible hinge for detecting a load of the precise pressing unit in an embedded manner; and the scratch driving unit is connected with the base through a screw. Signal detection is carried out by using the internal strain sheets, so that the entire testing device has the advantages of compact structure and small size; and the entire testing device is conveniently mounted on carrier tables, such as a scanning electron microscope (SEM) or an X-ray diffraction meter, so that the in-situ impress and scratch test of the material can be realized. Therefore, the full-strain measurement type in-situ nanometer impress / scratch testing device provides technical support for researching a damage mechanism of the material.
Owner:中机试验装备股份有限公司
Low-temperature micro-nano indentation test system for large-stroke low-temperature drift under microscopic assembly
ActiveCN108535129AConvenient researchSimple structureInvestigating material hardnessMicro nanoClosed loop
The invention relates to a low-temperature micro-nano indentation test system for large-stroke low-temperature drift under a microscopic assembly, belonging to the technical field of precision instruments. The low-temperature micro-nano indentation test system comprises a vacuum chamber system module, a sliding cryostat assembly and an indentation testing mechanical structure module. Large-strokequasi-static loading is carried out with a hybrid drive mode of a precision displacement drive platform and a voice coil motor in cooperation; a sample and an indenter are simultaneously cooled by a contact refrigeration method; an embedded integrated heating element and temperature measuring element are used to carry out continuous temperature varying closed-loop adjustment and weaken the influence of low temperature drift on test results; the microscopic imaging assembly is used to carry out accurate positioning of indentation locations and in-situ observation of surface topography. The low-temperature micro-nano indentation test system can be used for providing the experimental basis for studying the mechanical properties of materials in low temperature environment and the change rule of mechanical properties of materials with temperature, and has significant application value in research on the mechanical properties of key service materials of aerospace and polar and deep-sea scientific research equipment, superconducting transmission equipment, etc.
Owner:JILIN UNIV
Portable cutting-in testing system
ActiveCN106644715AEnables in-situ scratch-in testingRealize in situ observationMaterial strength using tensile/compressive forcesUsing mechanical meansComputer moduleTest fixture
The invention provides a portable cutting-in testing system. The portable cutting-in testing system comprises a cutting-in testing device and a computer, wherein the cutting-in testing device comprises a base, and a working platform adjusting module, a cutting-in testing module, an in-situ observation module, a signal measuring and controlling module and a power supply module which are mounted on the base, wherein the working platform adjusting module, the cutting-in testing module, the in-situ observation module and the signal measuring and controlling module are connected with the power supply module respectively; the working platform adjusting module comprises a vertical adjusting module, a horizontal adjusting module and a working platform; and the cutting-in testing module comprises a piezoelectric ceramic driver for horizontal driving, an electromagnetic driving device for vertical driving and a pressing head. The invention provides the portable cutting-in testing system which can carry out in-situ cutting-in testing and has relatively high testing precision.
Owner:ZHEJIANG UNIV OF TECH
Mini-type precise in-situ nano impression and scratching testing device
InactiveCN105021478ARealize detectionRealize the scoring functionInvestigating material hardnessElectricityEngineering
The invention relates to a mini-type precise in-situ nano impression and scratching testing device. The mini-type precise in-situ nano impression and scratching testing device comprises macro adjusting mechanisms, a precise pressing-in unit, a load and displacement signal detection unit and a scratch driving unit, wherein an x-directional macro adjusting mechanism is mounted on a substrate; a y-directional macro adjusting mechanism is mounted on an x-directional slide platform; the precise pressing-in unit is mounted on a y-directional slide platform of the y-directional macro adjusting mechanism; a force sensor and y-directional packaging piezoelectric ceramic are mounted at the front end and the inner part of a y-directional flexible hinge respectively; a displacement signal is detected by using the packaging piezoelectric ceramic; a pressing-in load is measured by the force sensor; precise driving is realized by the y-directional packaging piezoelectric ceramic and a pressing-in displacement is measured; a test piece is heated by a silicon nitride heating element so that an impression load displacement curve at a high temperature is obtained; precise scratching driving is realized through z-directional packaging piezoelectric ceramic; and deformation and damage conditions of a material at the high temperature can be observed in real time through heating the test piece by the silicon nitride heating element.
Owner:JILIN UNIV
Optical microscope beam splitter device
InactiveCN104267488ARealize white light imaging observatioRealize in situ observationRaman scatteringMicroscopesBeam splitterMeasurement point
The invention discloses an optical microscope beam splitter device which comprises a beam splitter shell and a beam splitter cover plate. The beam splitter cover plate is used for guaranteeing that space in the beam splitter shell does not leak light. Two sets of beam splitting sheet fixing frames are arranged in the beam splitter shell in parallel, one set is used for white light imaging observation, and the other set is used for spectral measurement. A switching mechanism used for switching the two sets of beam splitting sheet fixing frames is further arranged in the beam splitter shell. An in-situ observation white light imaging focus point and a laser in-situ measurement point of a measured sample are kept consistent by switching a double-beam-splitting-sheet white light imaging observation module and a spectral measurement full-reflection mirror module, the utilization ratio of light intensity of incoming lasers and the efficiency of collecting light signals (raman scattering light or fluorescent light) from the sample are improved, and the testing space resolution and testing sensitivity are improved.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Portable pressure testing system having in situ observation and continuously testing functions
PendingCN106370517ARealize in situ observationEnable continuous testingMaterial strength using tensile/compressive forcesInvestigating material hardnessTest efficiencyEngineering
A portable pressure testing system having in situ observation and continuously testing functions comprises a host testing system, which comprises a working platform adjusting module, a pressure testing module, an in situ observation module and a mounting and fixing module, wherein the working platform adjusting module comprises a working platform and a working platform lifting adjustment assembly, the working platform is connected to the working platform lifting adjustment assembly, the in situ observation module and the pressure testing module are coaxially mounted on a swivel plate of the working platform with respect to each other at a fixed angle, the swivel plate is connected to a switching and driving assembly used for driving the swivel plate to rotate for the fixed angle to implement switching between a pressure mode and an observation mode, and the working platform is fixed on the mounting and fixing module used for locating the entire testing system on a surface of an object to be tested. The invention provides a portable pressure testing system having in situ observation and continuously testing functions which can effectively achieve in situ observation, implement continuously testing, and improve testing efficiency and testing accuracy.
Owner:ZHEJIANG UNIV OF TECH
In-situ observation device and observation method for crystal growth based on tiny droplets
InactiveCN107941804AEasy to controlRealize in situ observationInvestigating crystalsObservation methodFemto-
An in-situ observation device for crystal growth based on tiny droplets includes a droplet generation and control unit, a droplet bearing platform and an observation recording unit. The droplet generation and control device includes a micro dropper, a droplet generation controller and a dropper fixing holder. A part, located below the micro dropper, of the droplet bearing platform is used for placing a glass slide. The observation and recording unit includes an observation mirror and a data acquisition system, the observation mirror is located below the glass slide, and a lens faces to the glass slide. The observation mirror includes a microscope or a spectrometer. The droplet generation and control device can produce tiny droplets with the volume from a femto-liter level to a micro-literlevel, and the volume of the droplets can be accurately controlled by the diameter of the micro dropper and the droplet generation controller. A solution is quantitatively jetted on the glass slide, then the observation mirror is used for observation and the data acquisition system is used for recording, and the shape change and rule of the nucleation, growth and precipitation processes of the crystal formed from micro droplets can be obtained. The invention provides a simple and rapid technical means to realize in-situ observation of the crystal material growth process.
Owner:TSINGHUA UNIV +1
Method for crystallizing germanium antimony tellurium materials through electronic beam irradiation induction
ActiveCN108588672AFacilitate in-situ observation and microstructure characterizationEnables in-situ performance testingVacuum evaporation coatingSputtering coatingMicrostructureVoltage
The invention discloses a method for crystallizing germanium antimony tellurium materials through electronic beam irradiation induction. The method comprises the steps that a substrate capable of carrying out microstructure representation or electrical property testing or in-situ performance testing is selected for preparing a germanium antimony tellurium amorphous film; the substrate for preparing the germanium antimony tellurium amorphous film is subjected to electron microscope sample pretreatment; a clean and smooth area of the surface of the germanium antimony tellurium amorphous film isfound in an electron microscope sample; the irradiation range, irradiation voltage, irradiation intensity and irradiation time are set in an electron microscope; the crystallizing process of the irradiation area of the electron microscope sample is observed in the electron microscope in real time, germanium antimony tellurium crystals meeting the crystallizing range, the crystal structure and thegrain size are obtained, and the process of crystallizing the germanium antimony tellurium materials through electronic beam irradiation induction is completed. The method provides experimental evidences for the study of the phase-change material crystallization mechanism and corresponding structural performance.
Owner:XI AN JIAOTONG UNIV
High-temperature mechanical simulation and in-situ observation device
PendingCN112113993AFast heatingHeating fastHeating element shapesMaterial thermal analysisEngineeringMachine
The invention discloses a high-temperature mechanical simulation and in-situ observation device which comprises a high-temperature environment box (13), a sample (12) transversely penetrates through the middle of the high-temperature environment box (13), the two ends of the sample (12) are both located on the outer side of the high-temperature environment box (13), and the two ends of the sample(12) are connected with a load unit through clamps (10). The high-temperature mechanical simulation and in-situ observation device provided by the invention can realize in-situ observation of high-temperature service behaviors, and different from a traditional high-temperature testing machine, the device uses the left-handed and right-handed screw rods, the two ends of a sample move relatively inthe loading process, and the center of the sample is kept still, so that in-situ observation of a specific area can be realized. The device is simple in structure, low in cost, easy and convenient tooperate and complete in function, and scientific and real experiment results can be obtained.
Owner:李旋
A method for realizing three-dimensional imaging of symmetrical micro-nano samples with a single X-ray measurement
InactiveCN103487452BImproving the efficiency of 3D imaging experimentsRealize in situ observationMaterial analysis using radiation diffractionSpatial OrientationsX-ray
The invention discloses a method for realizing three-dimensional imaging of a symmetrical micro / nano sample through single X-ray measurement. The method comprises the following steps: by taking a coherent X-ray diffraction microscope as imaging equipment and utilizing the characteristics of free electron laser all-coherence, high flux and short pulse of X ray, acquiring two-dimensional diffraction data of the symmetrical micro / nano sample under single pulse irradiation, calculating an equivalent line of the diffraction data of the sample according to crystallographic symmetry characteristics of the symmetrical sample to determine spatial orientation of the sample, performing symmetry operation of a crystallographic point group of the sample on the two-dimensional diffraction data by utilizing the spatial symmetry of the sample to obtain three-dimensional diffraction data of the sample, and performing phase retrieval and image reconstruction on the three-dimensional recombinant diffraction data according to an oversampling and iterative algorithm to finally obtain a three-dimensional structure of the symmetrical sample. According to the method, three-dimensional reconstruction of the sample can be realized through single measurement only, the experiment efficiency of three-dimensional imaging is effectively improved, and a new thought is provided for enriching a three-dimensional imaging method.
Owner:SHANDONG UNIV
Mass transfer reinforced bubbling fixed bed photocatalytic carbon dioxide reduction reactor and method
PendingCN114832732AEnhanced mass transferAchieve enrichmentEnergy based chemical/physical/physico-chemical processesAir quality improvementPhotocatalytic reactionPtru catalyst
The invention belongs to the field of solar photocatalytic reaction, and discloses a mass transfer enhanced bubbling fixed bed photocatalytic carbon dioxide reduction reactor and method, and the reactor comprises a reaction cavity which is in an inverted circular truncated cone shape, and the interior of the reaction cavity is hollow to form a reaction space; the quartz light window is mounted at the top of the reaction cavity; the gas inlet base is mounted at the lower part of the reaction cavity; and the bubbling bed is arranged between the lower end of the reaction cavity and the upper end of the air inlet base. Compared with a traditional powder suspension system photocatalytic reaction system, the reactor has the advantages that the mass transfer performance of a catalyst interface is fully improved, the CO2 reduction reaction of the interface is always in a sufficient state of protons, electrons and CO2 molecules through regulation and control of a three-phase interface while efficient light absorption is achieved, and the activity of the CO2 reduction reaction of a solution system is effectively improved.
Owner:XI AN JIAOTONG UNIV
Method for in-situ study of amorphization mechanism of germanium-antimony-tellurium material under electron beam irradiation
InactiveCN110554060AAvoid molten stateUniversalPreparing sample for investigationMaterial analysis by transmitting radiationDirect observationTe element
The invention discloses a method for in-situ study of an amorphization mechanism of a germanium-antimony-tellurium material under electron beam irradiation. The method comprises the following steps: selecting a germanium-antimony-tellurium crystal thin film of which the surface is deposited on a carbon supporting film copper carrying net with a standard size of a transmission electron microscope;carrying out surface pretreatment on the prepared film sample by adopting a plasma cleaning technology, and carrying out plasma cleaning by selecting argon; placing a pretreated electron microscope sample in the transmission electron microscope, and searching an area which is smooth in surface, free of carbon deposition, pollution and damage and uniform in thickness in the thin film sample to serve as an irradiation area; setting irradiation parameters, and inducing the material to be gradually amorphized; and observing and recording the evolution process of the amorphous structure of the material in situ, and analyzing the amorphous phase change mechanism of the material. According to the method, the gradual amorphization of the germanium-antimony-tellurium material is realized through electron beam irradiation, and the structural evolution process of the material amorphization is directly observed and analyzed by virtue of the transmission electron microscope, so that the convenientresearch method and a reliable experimental basis are provided for exploring the amorphization mechanism of the germanium-antimony-tellurium material.
Owner:XI AN JIAOTONG UNIV
Method for testing dynamics and interface behaviors of molten slag dissolved solid oxide based on hot filament method
InactiveCN110988015ARealize in situ observationSimple and fast operationMaterial analysis using wave/particle radiationMaterial analysis by optical meansTemperature controlTest sample
The invention relates to a method for testing dynamics and interface behaviors of molten slag dissolved solid oxide based on a hot filament method. The method comprises the following steps: step 1, setting an experimental temperature control curve of hot filament method equipment; step 2, wetting the powder slag with alcohol, adding the wetted powder slag into a melting zone of the hot filament method equipment, and performing heating for melting; step 3, after reaching of the temperature to a set value, adding a certain mass of solid oxide particles into the slag; step 4, observing a dissolution process of the solid oxide particles in situ through a video, processing a picture by utilizing graphic processing software, and calculating an average dissolution rate; and step 5, carrying out quenching and cooling at a set rate to obtain an in-situ test sample, and acquiring parameters or performance indexes of dynamics and interface behaviors of the molten slag dissolved solid oxide through a micro-area analysis means. According to the invention, in-situ observation of the solid oxide dissolving process can be realized; an opaque slag system containing transition metal oxide can be researched; an in-situ sample for micro-area structure and component analysis is obtained through quenching, and the obtained micro-area component analysis sample has good in-situ performance.
Owner:CHONGQING UNIV
Seabed Lateral Deformation and Sliding Observation Device and Method
ActiveCN105301193BObvious lateral deformationTest accurateMaterial analysisOcean bottomMeasurement device
The invention provides a seabed lateral deformation and sliding observation device and method. The seabed lateral deformation and sliding observation device comprises an auxiliary ship and a seabed observation system, wherein the auxiliary ship is provided with an offshore drilling rig and a lifting device, and the seabed observation system is provided with a displacement measurement device, a data acquisition sealing cabin and a subsidence prevention frame. The displacement measurement device is of a rod joint combination structure with a cable, each joint point is provided with a three-axis acceleration sensor, and the displacement deviation of each joint point can be calculated according to the posture change of the corresponding three-axis acceleration sensor. The method includes the steps that the auxiliary ship is utilized for drilling a target point position so that the seabed observation system can be arranged, the seabed lateral deformation and sliding are observed and recorded through the displacement measurement device in the seabed observation system, fishing and recycling are conducted after the in-situ observation cycle is ended, and the deformation amount and the deformation process of seabed soil can be obtained by analyzing data. The seabed lateral deformation and sliding observation device and method provide a new thought and a new method for seabed lateral deformation and sliding observation and have the advantages of being long in observation cycle, capable of being repeatedly used, wide in observation range, high in accuracy and the like.
Owner:OCEAN UNIV OF CHINA
Device and method for in-situ observation of domain structure of ferroelectric material before and after electric field action
ActiveCN104880577AReduce leakageObservation position unchangedScanning probe microscopyInsulation layerObservation point
The invention discloses a device and a method for in-situ observation of a domain structure of a ferroelectric material before and after an electric field action. The device is mainly characterized in that an insulation layer grows on the surface of a ferroelectric film which is provided with a lower electrode; the insulation layer is provided with at least one electrode hole; and a part of the ferroelectric film enclosed by each electrode hole serves as an observation point for observing the domain structure of the ferroelectric film before and after the electric filed action. During observation, an upper electrode is arranged in one of the electrode holes, voltage is applied between the upper electrode and the lower electrode for performing polarization of the ferroelectric film covered by the upper electrode. According to the invention, different voltages can be applied to the ferroelectric film, meanwhile, the upper electrode is configured to be capable of being easily removed from the corresponding electrode hole, so that a fact that different voltages can be applied to the same observation point of the ferroelectric film, and in-situ observation of change in a longitudinal direction in the domain structure of the ferroelectric material before and after different electric field actions can be achieved.
Owner:嘉兴巨腾信息科技有限公司
Totally-enclosed inverted microscope with multi-region scanning function
ActiveCN111258048ARealize in situ observationExtended service lifeMicroscopesCulture fluidEngineering
The invention discloses a totally-enclosed inverted microscope with a multi-region scanning function, which comprises an inverted microscope body, and the inverted microscope body comprises a light source, and the light source is connected with an optical lens assembly through a connecting structure; and the optical lens assembly is connected with a transverse moving structure and a longitudinal moving structure. A fixedly arranged transparent objective table is installed between the light source and the optical lens assembly. According to the invention, the light source and the optical lens assembly move synchronously, and the objective table is immovable, so that in-situ observation of a liquid culture is realized; the inverted microscope is positioned in the completely closed box body and is not influenced by a high-temperature and high-humidity environment in the incubator, so that the service life of the inverted microscope is prolonged; by means of the specially-arranged longitudinal moving mechanism, the occupied area of the microscope is greatly reduced; and the inverted microscope and the culture medium are isolated, so that the culture solution is effectively prevented from being scattered on the objective table to cause microscope pollution.
Owner:上海观纳智能科技有限公司
Device for testing solid-state lithium battery
PendingCN113433459ARealize in situ observationAvoid clarityElectrical testingApparatus for force/torque/work measurementElectrical batteryMechanical engineering
The invention discloses a device for testing a solid-state lithium battery. The device comprises a box body, a first current collector, a second current collector, a bolt, a connecting rod, a first sensor, a sealing cover plate and at least one tab for electrically connecting components in the box body with the outside. Threaded holes are formed in one side wall, in the length direction, of the box body and the first current collector, so that the first current collector can be horizontally moved through rotation of a bolt outside the box body, and a battery to be detected is suspended and clamped between the first current collector and a second current collector which are arranged in the length direction of the box body. The other end of the second current collector is sequentially connected with the connecting rod and the first sensor, so that the first sensor is propped against the inner surface of the other side wall of the box body to test the pressure output by the solid-state lithium battery during operation; wherein the sealing cover plate is provided with a transparent baffle plate for observing the operation of the battery to be detected, and the baffle plate is made of quartz glass, polytetrafluoroethylene or sapphire materials.
Owner:TIANJIN UNIV
Heating device for micro-area controllable nano functional material synthesis
InactiveCN101481818BRealize in situ observationUniform responseFrom chemically reactive gasesFrom condensed vaporsElectricityMaterial synthesis
Owner:HEFEI UNIV OF TECH
Scanning electron microscope electron detector with high collection efficiency
PendingCN113421813AImproving Imaging AccuracyImprove collection efficiencyElectric discharge tubesSecondary electronsLight guide
The invention provides a scanning electron microscope electron detector with high collection efficiency. The scanning electron microscope electron detector improves the collection efficiency of secondary electrons or backscattered electrons and can further improve a signal-to-noise ratio and resolution of images. The scanning electron microscope electron detector comprises a grid mesh; a Faraday cup; a scintillator; a light guide column; a photomultiplier tube; a high-voltage power supply; a current amplification circuit board; and a stainless steel shell, wherein an electronic signal input end of the Faraday cup is provided with a convex screen, an electronic signal output end of the Faraday cup is arranged towards the scintillator, a photon signal output end of the scintillator is arranged towards an input end of the light guide column, an output end of the light guide column is connected to a signal input end of the photomultiplier tube, a signal output end of the photomultiplier tube is connected with a signal input end of the current amplification circuit board, and the photomultiplier tube is connected with the high-voltage power supply; and the high-voltage power supply, the photomultiplier tube, the light guide column and the scintillator are coated in the stainless steel shell, and the Faraday cup is fixedly arranged at the input end of the front part of the stainless steel shell.
Owner:无锡量子感知技术有限公司
A method for preparing in-situ stretched samples for transmission electron microscopy
ActiveCN107664593BWide adaptabilitySave materialPreparing sample for investigationTest samplePlastic materials
The invention relates to a method of preparing an in-situ tensile sample of a transmission electron microscope. The method comprises the steps of preparing a block sample and feeding the block sampleto an FIB sample cabin, and focusing an ion beam onto the block sample; preparing an I-shaped rough blank with two thick ends and a thin middle crossbeam by using an ion beam; preparing a substrate, digging an I-shaped hole with two big ends and a thin middle crossbeam on the substrate, and cutting at two sides of the thin crossbeam of the I-shaped hole to form slopes, wherein the thin crossbeam is at the highest position of the slopes; connecting the rough blank with the substrate so as to form a sample; thinning the middle of the rough blank, and drilling a hole in the axis of the rough blank; and thinning the thin crossbeam of the rough blank in the thickness direction till the bottom end of the rough blank is damaged. The in-situ tensile sample of the transmission electron microscope comprises the substrate and the rough blank, wherein the rough blank is cut from a to-be-observed test sample, the substrate is made of a plastic material, and the rough blank is fixed in the substrate. Both plastic material and brittle material can be prepared into samples suitable for existing transmission electron microscope sample rods, and the yield of finished products is high.
Owner:ZHEJIANG UNIV
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