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37 results about "Electric field magnitude" patented technology
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The magnitude of the electric field can be found using the formula: The electric field 1.000 mm from the point charge has a magnitude of 0.008639 N/C, and is directed away from the charge. ... The magnitude of the electric field can be found using the formula: The electric field 0.2500 m away from the small metal ball has a magnitude of, and is directed toward the charge.
Non-thermal disinfestation of biological pests with pulsed radio frequency power systems
InactiveUS20060024195A1Maximize RF peak powerFast rise timeLavatory sanitoryInsect catchers and killersBatch processingEngineering
An apparatus and method for disinfestation of temperature sensitive and other commodities using short duration, high peak power radio frequency pulses and intense electric fields to preferentially induce drift of conduction charges, spot heating and other mortal damage to infesting insects and mites without raising the temperature of the host commodity. A low frequency mode is provided with a frequency range of approximately 10 Hz to 1 MHz and is particularly suited for large batch processing of pallets or field containers. A high frequency mode is also provided that is suited for continuous or small batch processing and uses a preferred frequency range of approximately 1 MHz to 150 MHz. Both modes preferably have an electric field strength of greater than approximately 5 kV / cm and pulse repetition rates of between one pulse and approximately 10 million pulses per second. The method is non-contact, residue free and effective with all biological stages of an infesting insect, mite or other biological pest including egg, pupa, larvae, juvenile and adult forms. The apparatus and methods of the invention are an effective alternative to methyl bromide fumigation that does not leave any toxic residues or damage the cosmetic appearance or flavor of the commodity.
Owner:RGT UNIV OF CALIFORNIA
Method and system for estimating fractional fat content of an object
ActiveUS9888879B1Organ movement/changes detectionDiagnostic recording/measuringUltrasonic sensorBipolar signal
A method and system for estimating fractional fat content of an object of interest. An energy emitter is used to direct an energy signal with an energy signal electric field strength toward the region of interest, wherein the region of interest has an object of interest, a reference, and a boundary between the object of interest and the reference. Next, a thermoacoustic or ultrasonic transducer is used to receive a thermoacoustic bipolar signal from the boundary, wherein the thermoacoustic bipolar signal is induced by the energy signal. Finally, a machine is used to accept data from the energy emitter and thermoacoustic or ultrasonic transducer, correlate the thermoacoustic bipolar signal to an electric field strength of the reference at the boundary to generate a corrected thermoacoustic bipolar signal at the boundary, and calculate a fat concentration of the object of interest as a function of the corrected thermoacoustic bipolar signal at the boundary.
Owner:ENDRA LIFE SCI INC
Preparation method of non-linear composite material having adaptive uniform electric field
ActiveCN102424576ASolve the problem of bearing uneven electric fieldUniform electric fieldSilicon oxideSlurry
The invention relates to a preparation method of a non-linear composite material having adaptive uniform electric field, belonging to the technical field of electric materials. The method comprises the following steps: using zinc oxide, bismuth oxide, manganese oxide, cobalt oxide, chrome oxide, antimony oxide and alumina as raw materials, mixing after weighing in proportion, adding alcohol in the mixture, grinding with a grinding ball prepared by pure silicon oxide, and drying and crushing the grinded slurry; adding a vulcanizing agent in methyl vinyl silicone rubber, dissolving with tetrahydrofuran to obtain a mixed solution, mixing the mixed solution with zinc oxide pressure-sensitive powder to obtain a mixture, and carrying out hot forming on the mixture to obtain the non-linear composite material. The prepared non-linear composite material disclosed herein can effectively reduce electric field intensity when being applied in high voltage power transmission and transformation system insulation parts having strong nonuniform electric field, and can keep good insulation characteristic in low electric field intensity regions.
Owner:TSINGHUA UNIV +1
Method for testing ion diffusion coefficient at presence of electric field function based on molecular dynamics
ActiveCN110097927AFast diffusion coefficientShorten the timeChemical property predictionComputational theoretical chemistryData fileMATLAB
The invention belongs to the technical field of a microscopic nano-material technology, and particularly relates to a method for testing an ion diffusion coefficient at presence of an electric field function based on molecular dynamics. The method comprises the following steps of constructing a calcium silicate hydrate (C-S-H) model based on molecular dynamics simulation software Materials Studio,and exporting a car,cor file; exporting a data file based on a large-scale atomic / molecular massively parallel simulator (lammps); wherein an LJ potential function is used for estimating a module size and a lowest value of a non-bonding junction effect potential energy; compiling an in file, and operating the in file; wherein the strength of the electric field which is applied to the model in anX-direction is mean square displacement value in calculating different electric field magnitudes; outputting a cl.msd file; and obtaining an ion diffusion coefficient according to an Einstein diffusion law through Matlab analysis and Origin drawing. The method can quickly and accurately predict a chloride ion diffusion coefficient of concrete without pollution.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY +1
High-voltage cable detection robot equipped with electric field intensity detector
The invention discloses a high-voltage cable detection robot equipped with an electric field intensity detector. The high-voltage cable detection robot comprises a robot body, wherein an L-shaped shaft arm is arranged on each of the two sides of the robot body separately; the free ends of the shaft arms are coupled with rolling wheels for enabling the robot body to move forwards or backwards within a cable pipeline; the rolling wheels prop against the inner wall of the cable pipeline; the high-voltage cable detection robot comprises driving motors used for driving the rolling wheels to rotate; and a control circuit is arranged in the robot body. The robot is arranged in the cable pipeline; the robot moves forward through the rolling wheels so as to monitor conditions in the pipeline at any time, so that the conditions of other cables can be checked within one section of linear pipeline without detaching the pipeline.
Owner:TONGLING POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CO +1
Miniature X-ray source based on carbon nanotube field emission
InactiveCN104867800AImprove emission efficiencyImprove stabilityX-ray tube electrodesX-ray tube vessels/containerTemporal resolutionTime delays
The invention discloses a miniature X-ray source based on carbon nanotube field emission. A field emission cathode is low in working temperature, is low in power consumption, is easy to achieve the miniaturization of the X-ray source, and is suitable for on-orbit calibration of an X-ray detector. There is no time delay on field electron emission, and a generated pulse X-ray is greatly high in temporal resolution. Moreover, the X-ray can be transmitted in a programmable manner, so the field electron emission is suitable for the calibration of time characteristics of the X-ray detector. The carbon nanotube field emission is high in efficiency, is stable in performance, and is longer in service life. Moreover, a stronger electron beam flow can be generated with no need of too high electric field intensity of a cathode surface. The operation that the electron beam generated by field emission impacts on a focal spot of an anode target can be controlled through a voltage of a focusing electrode, thereby improving the emission efficiency and stability of the X-ray. An emergent window is made of materials (Al) which are the same as the material of the anode target, achieves the monochromatization of the X-ray, and can be used for the calibration of the energy characteristics of the X-ray detector.
Owner:SHANDONG INST OF AEROSPACE ELECTRONICS TECH
Groove MOS (metal oxide semiconductor) structure Schottky diode and preparation method thereof
ActiveCN103022155AShorten the production cycleReduce manufacturing costSemiconductor/solid-state device manufacturingSemiconductor devicesSchottky barrierSemiconductor materials
The invention discloses a groove MOS (metal oxide semiconductor) structure Schottky diode. The electric field intensity distribution of a drifting region is changed through an MOS structure, so that a peak value electric field appears in a semiconductor material close to the bottom part of a groove, and does not appear close to a Schottky barrier junction. The invention also provides a preparation method, so that devices can be produced and manufactured through photolithographic processes twice.
Owner:ZHEJIANG UNIV
Photoionization air-circulation sterilizing deodorizing purifier
InactiveCN103363592AFeatures Environmental protection and energy savingImprove the bactericidal effectLighting and heating apparatusDeodrantsAir cycleDecomposition
The invention relates to an air purifier, especially highly effective to purify heavily polluted gases. The purifier comprises a power source, an inverter, an amplifier, a high tension generator, a voltage doubling circuit, a corona generator, a photoionization area, a draught fan, a speed change circuit, an isolation protection net, universal casters, and a housing. The purifier is characterized in that the stream theory of long-gap discharge is utilized,photoionization is generated from a 30mm discharge gap between positive and negative electrodes, low-impedance plasma (stream) between the positive and negative electrodes is connected; intensity of electric field is increased, and the stream can be turned into strip; photoionization members (plasma) can compose the large-area large-depth zonal purification unit. The purifier has the functions of cold sterilization, molecule decomposition, oxydative degradation, conversion of harmful matters and foul gases into the harmless; sterilization, deodorization and smoke elimination are achieved; all dusts smaller than PM2.5, causing dust haze, can be absorbed by the positive and negative electrodes in the ionization area, with the purification rate up to 100%; the 500mm<2> photoionization field consumes 77 watts only, so that environment protection and energy saving are achieved.
Owner:于 强
Pulse field enrichment ion migration tube
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Image forming apparatus using peak AC potentials to move toner toward an image bearing member and a developer carrying member, respectively
InactiveUS7715744B2Maintain good propertiesInhibit injectionElectrographic process apparatusPotential differenceImage formation
An image forming apparatus includes a photosensitive drum to which an electrostatic image is formed and a developing sleeve carrying a developer including toner carrier. An alternating voltage is applied to the sleeve to form an alternating electric field between the sleeve and the drum to develop the electrostatic image with the developer. A relation |K1|<|K2| is satisfied, where K1: a slope at an electric field intensity Ed=|(Vp2−VL) / D|, K2: a slope at an electric field intensity Eb=|(Vp1−VL) / D|, VL: a potential [V] of the electrostatic image at which a maximum density is obtained, Vp1: a peak potential [V] that provides a potential difference to move the toner toward the drum, Vp2: a peak potential [V] that provides a potential difference to move the toner toward the sleeve, and D: a closest distance [m] between the drum and the sleeve.
Owner:CANON KK
Pulse field ion migration tube
ActiveCN108091536AImprove resolutionImprove utilization efficiencyParticle spectrometer methodsUltimate tensile strengthIonization
The invention provides a new technology for enhancing the ion utilization efficiency in the ion migration tube ionization region, and particularly provides a pulse field ion migration tube. A pulse varying electric field is applied to the ionization region and the migration region of the ion migration tube so that the electric field in the ionization region can be enhanced and the electric field in the migration region can be reduced at the moment of opening of the ion gate, all the ions in the ionization region can be injected into the migration region and spatial focusing compression is performed on the ion groups by using the difference of the electric field intensity of the ionization region and the migration region and thus the sensitivity of the ion migration tube can be greatly enhanced and the ion migration tube is enabled to have great resolution capacity.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Method of calculating stratum true conductivity by using well axis electric field distribution
InactiveCN106646636ASimple methodImprove computing efficiencyElectric/magnetic detection for well-loggingWell loggingApparent conductivity
The invention provides a method of calculating stratum true conductivity by using well axis electric field distribution, which is simple and effective. The electric field distribution is generated by a transmitting coil after gradual moving of devices, and apparent conductivity distribution is acquired by a plurality of receiving coils, and requirements under conventional technical conditions are satisfied. The method comprises steps that step 1, electric field intensity distribution is measured along a well axis in a wellbore; every time a well logging device moves to a field point, the corresponding electric field distribution is measured; step 2, the measured electric field intensity distribution is converted into an apparent conductivity function; step 3, the apparent conductivity function is used for wellbore correction; step 4, a correct function value is selected from apparent conductivity function values after the wellbore correction, and the stratum true conductivity is acquired. By adopting the brand new induced electric field well logging method principle, the stratum true conductivity is calculated, and therefore the method is simple, calculation efficiency is high, and accuracy is good.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Liquid crystal electro-optic device
InactiveUS20050243257A1Improve display characteristicsSimple methodTransistorNon-linear opticsEngineeringUltimate tensile strength
Owner:SEMICON ENERGY LAB CO LTD
Semiconductor apparatus and manufacturing method thereof
InactiveUS8482081B2Reduce junctionReduced strengthTransistorSemiconductor/solid-state device manufacturingImpurity ionsSurge voltage
A high-performance semiconductor apparatus which can be easily introduced into the MOS process, reduces the leakage current (electric field strength) between the emitter and the base, and is insusceptible to noise or surge voltage, and a manufacturing method of the semiconductor apparatus. The emitter 111 is formed by performing the ion implantation twice by using the conductive film (109) as a mask. The second emitter area (111b) is formed by ion implantation of a low impurity density impurity ion, and the first emitter area (111a) is formed by ion implantation of a high impurity density impurity ion. As a result, the low impurity density second emitter area is formed in the circumference of the emitter 111, which lowers the electric field strength, and reduces the leakage current. Also the conductive film is connected with the emitter electrode (116), which makes the apparatus insusceptible to noise.
Owner:PANASONIC CORP
Static induction thyristor and manufacturing method thereof
InactiveCN109449205AReduce switching lossesReduce power consumptionThyristorSemiconductor/solid-state device manufacturingReverse recoveryVoltage drop
The invention provides a static induction thyristor and a manufacturing method thereof, and solves the problem that an SITH obtained in the prior art cannot meet the latest use requirements. A first highly-doped region is added to a positive electrode region of a device, so that a parasitic transistor is formed; the conduction voltage drop of the SITH is reduced, and meanwhile, the injection efficiency of a positive electrode is reduced by the first highly-doped region of the positive electrode region, so that the reverse recovery time is shortened, and the reverse recovery charge is also obviously reduced; and the final SITH device has a higher switching speed and lower switching loss. An epitaxial layer is also added between a fourth highly-doped region and a substrate, so that the effect of a buffer layer is achieved; during the reverse recovery period, the electric field intensity of the substrate and the epitaxial layer is reduced and the extraction speed of carriers is reduced, so that high-voltage oscillation is remarkably reduced, and a softer recovery characteristic is obtained; and the reverse recovery charge is less, so that the power consumption of the device is furtherreduced.
Owner:中健共创(深圳)大健康产业投资有限公司
Reverse coil for transcranial magnetic simulation and design method thereof
InactiveCN109011161AChange the depth of stimulationStimulation depth diminishedElectrotherapyMagnetotherapy using coils/electromagnetsUltrasound attenuationPower flow
The invention provides a reverse coil for transcranial magnetic simulation. The reverse coil is arranged above a reversed-V-shaped coil and is spatially superposed with the center of the reversed-V-shaped coil. The current direction of a circular coil at each side of the reverse coil is opposite from the current direction of the circular coil of the reversed-V-shaped coil at the same side, so thatthe direction of the electric field which is generated by the reverse coil is opposite from the direction of the electric field generated by the reversed-V-shaped coil, thereby effectively reducing the electric field strength at a scalp. The included angle of the reverse coil is changeable, and the height to the upper part of a head is changeable. Through changing the included angle, the height,the internal diameter and the external diameter of the reverse coil, the magnitude of an attenuation effect to the scalp can be changed, and furthermore the focusing performance of the reversed-V-shaped coil is improved.
Owner:TIANJIN POLYTECHNIC UNIV
Dielectrophoretic Cooling Solution for Electronics
ActiveUS20140092551A1Digital data processing detailsSemiconductor/solid-state device detailsDielectrophoretic forceElectronic component
At least one cooling channel is positioned adjacent to an electronic component. The cooling channel communicates with plenums at each of two opposed axial ends. A dielectric fluid is received in the cooling channel. The cooling channel is provided with at least one electrode. A potential is applied to the at least one electrode such that an electric field magnitude at the downstream end of the channel is less than an upstream electric field magnitude, and such that a dielectrophoretic force on a bubble in the cooling channel will force it downstream.
Owner:HAMILTON SUNDSTRAND CORP
Transition molding
InactiveUS20090050799A1Improve mobilityReduce concentrationTime-of-flight spectrometersSamples introduction/extractionFluorocarbonAmplifier
An apparatus and method for measuring low or trace concentrations of compounds and mixture of gases. A method and apparatus of the invention permits separating ions of different mobilities by passing them through an abrupt change or step in electric field magnitude. By using the separation method, the compounds of interest may be measured with less interference from other compounds of the gas mixture, which reduces or eliminates the need for prior separation of the components of the gas mixture. Several embodiments of the invention are described including the use of current amplifiers on one, or more, parts of the apparatus. While a single screen can provide a chamber which is divided into two regions of different electric fields, it is within the scope of the invention to include multiple screens to provide several steps in the electric field permitting it to be possible to trap and measure ions with successively higher mobilities. The gases used include halogenated compounds, including fluorocarbons, and most preferable SF6.
Owner:US SEC THE DEPT OF COMMERCE
Slow-release method for controlling medicine-carrying molecules of lyotopic liquid crystal by using micro electric field
InactiveCN102526745AHigh parcel ratePeptide/protein ingredientsMetabolism disorderPulse controlControlled release
The invention relates to a slow-release method for controlling medicine-carrying molecules of lyotopic liquid crystal by using a micro electric field. The slow-release method comprises the following steps of: adopting a pulse electric field to carry out controlled release on the carried medicines of the lyotopic liquid crystal; and utilizing the sensitivity of a unique ordered structure consisting of biparental molecules of the lyotopic liquid crystal to the stimulation of external physical factors and the advantage of GMO / F127 lyotopic liquid crystal for carrying the medicines with differentpolarities and different types, and calculating threshold current density jc equal to sigmaE according to the electric field intensity threshold which is deducted according to the theory and causes the elastic deformation of the liquid crystal, thus designing and finishing pulse controlled release experiment in a mice body and verifying the validity of the slow-release method for controlling the packaged medicines of lyotopic liquid crystal by using the electric field. The method can adopt a quantitative condition to control the release of the medicines and obviously improves the medicine effect and the utilization ratio of the medicines.
Owner:XI AN JIAOTONG UNIV
Method for restricting electric field intensity of soil around grounding body and separating soil discharge passage
InactiveCN102926406AReduce intensityLong-term high pressure resistanceArtificial islandsProtective foundationInsulation layerAdhesive
The invention provides a method for restricting the electric field intensity of soil around a grounding body and separating a soil discharge passage, and belongs to the technical field of high voltage. The method comprises the following steps: excavating a trench at a position, needing to be subjected to electric field intensity restriction, around a grounding grid, wherein the depth of the trench exceeds the burying depth of a protected object; building a support wall in a trench in which an insulation wall is buried; pasting adhesives on one side of the support wall close to the grounding body; backfilling fine earth in a gap between the insulation wall and soil and compacting after the adhesives are solidified and the insulation layer is firmly glued; and paving a gravel layer with the thickness of 20cm within 2m in the horizontal direction at the root of the front, rear, left and right ground surfaces of the insulation wall. By adopting the method for restricting the electric field intensity of soil around the grounding body and separating the soil discharge passage, the electric field intensity of soil in part areas around the grounding grid is effectively restricted, the discharge passage of lightning stroke in soil is separated, and pipelines, cables and underground oil tanks around the grounding grid of substations, microwave towers and buildings are protected.
Owner:SHAANXI ELECTRIC POWER RES INST +1
Method for Determining Power Frequency Electric Field of Undulating Ground Overhead Transmission Line Based on Simulated Charge Method
ActiveCN103995986BImprove accuracyImprove applicabilitySpecial data processing applicationsTerrainSimulation based
Owner:STATE GRID CORP OF CHINA +1
A method for removing EEG artifacts induced by transcranial magnetic stimulation of the brain
ActiveCN105193412BShort durationEliminate side effectsDiagnostic recording/measuringSensorsSide effectMedicine
A method for removing EEG artifacts induced by transcranial magnetic stimulation of the brain, using electric field simulation or electric field measurement, and by calibrating the method of generating an induced electric field by a magnetic stimulation coil, to determine the optimal position corresponding to the EEG acquisition device and the magnetic stimulation coil Optimal position to detect and obtain EEG signals. The present invention considers the relative position and angle of the EEG acquisition device and the stimulating coil when determining the brain stimulation area of the transcranial magnetic stimulation, and gradually corrects the relative position of the wire and the coil by simulating or measuring the electric field strength and direction induced by the coil. EEG signals under TMS. It can remove most of the artifacts of EEG under TMS, make the EEG signal induced by TMS more accurate, reduce the side effects of TMS, and ensure its stimulation effect, fully reflect the role of TMS in the transmission of brain networks, and affect the EEG induced by TMS. Research is very important. The method can reduce the amplitude of artifacts by 10 to 20 times, and can reduce the duration of artifacts by 30%.
Owner:深圳德力凯医疗电子股份有限公司
A field sensor calibration system and method
ActiveCN105527598BImprove calibration accuracyRadiating elements structural formsElectromagentic field characteristicsAntenna impedanceCurve shape
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT
Method for specific continuous separation of micro-scale particles
InactiveCN102961966BSolve agglomerationAchieve separationDispersed particle separationChemical physicsMicrosphere
The invention discloses a method for specific continuous separation of micro-scale particles. The method can be used for realizing continuous adjustable multi-path separation of three types of different-size polystyrene microsphere mixtures by using a dielectrophoresis (DEP) microfluidic chip for specific continuous separation of micro-scale particles, and by regulating the flow rate of a fluid, the electric field intensity and the pulse frequency under the condition of continuous sampling. The three types of particles can move to the different spanwise positions of a channel since the three types of particles bear different intensities of DEP force and Stokes force; and the type of the extracted particle can be controlled at will by regulating control parameters. When an electric field parameter and a flow field parameter are matched, the medium-size 5mum particles can move on a flow channel always in an electrode tilting direction; the 3mum particles can move forwards substantially along the main flow direction; and the 10mum particles are influenced remarkably by the electric field and the flow field, and can move to the other side of the channel, so that the three types of particles are discharged from different outlets to obtain the 3mum, 5mum, and 10mum polystyrene particles, respectively.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Schottky semiconductor device with charge compensation and manufacturing method thereof
ActiveCN103378173AIncrease the doping concentrationLower forward conduction resistanceSemiconductor/solid-state device manufacturingSemiconductor devicesPower semiconductor deviceCharge compensation
The invention discloses a Schottky semiconductor device with charge compensation. The electric field intensity distribution of drifting areas is changed through charge compensation structures, and a flat electric field intensity distribution curve is formed. Thus, the doping concentration of impurities of the drifting areas can be improved, forward-direction conduction resistance of a component is lowered greatly, and the forward-direction conduction character of the component is improved. The invention further provides a manufacturing method of the Schottky semiconductor device with charge compensation.
Owner:北海惠科半导体科技有限公司
Stepped electric field detector
InactiveUS7709787B2Increase drift speedReduce probabilityTime-of-flight spectrometersMaterial analysis by electric/magnetic meansProduct gasFluorocarbon
An apparatus and method for measuring low or trace concentrations of compounds and mixture of gases. A method and apparatus of the invention permits separating ions of different mobilities by passing them through an abrupt change or step in electric field magnitude. By using the separation method, the compounds of interest may be measured with less interference from other compounds of the gas mixture, which reduces or eliminates the need for prior separation of the components of the gas mixture. Several embodiments of the invention are described including the use of current amplifiers on one, or more, parts of the apparatus. While a single screen can provide a chamber which is divided into two regions of different electric fields, it is within the scope of the invention to include multiple screens to provide several steps in the electric field permitting it to be possible to trap and measure ions with successively higher mobilities. The gases used include halogenated compounds, including fluorocarbons, and most preferable SF6.
Owner:US SEC THE DEPT OF COMMERCE
Dielectrophoretic cooling solution for electronics
ActiveUS9030824B2Digital data processing detailsSemiconductor/solid-state device detailsDielectrophoretic forceElectronic component
At least one cooling channel is positioned adjacent to an electronic component. The cooling channel communicates with plenums at each of two opposed axial ends. A dielectric fluid is received in the cooling channel. The cooling channel is provided with at least one electrode. A potential is applied to the at least one electrode such that an electric field magnitude at the downstream end of the channel is less than an upstream electric field magnitude, and such that a dielectrophoretic force on a bubble in the cooling channel will force it downstream.
Owner:HAMILTON SUNDSTRAND CORP
An in-situ test system for magnetoelectric stress coupling of nitride light-emitting diodes
ActiveCN105606982BImprove luminous efficiencyIncrease stressIndividual semiconductor device testingLattice constantEmission efficiency
The invention discloses an in-situ test system for magnetoelectric stress coupling of a nitride light emitting diode, comprising: a nitride light emitting diode, an external current source, an XRD test component and a magnetic field generating device, and is characterized in that the side wall of the nitride light emitting diode is formed Magnetic material, pass current through the P-type electrode and N-type electrode of the nitride light-emitting diode, place it on the sample stage of the XRD test assembly, generate a magnetic field around the nitride light-emitting diode through a magnetic field generating device, and make the nitride light-emitting diode Light-emitting diodes produce magnetic field-electric field-stress coupling effects, and use XRD single crystal diffraction to test the lattice constant of light-emitting diodes in the process of magnetic field and electric field changes in situ, and then control the magnitude of the magnetic field and electric field in situ, and adjust the stress change of nitrides , so that the light-emitting diode can obtain the highest luminous efficiency.
Owner:XIAMEN SANAN OPTOELECTRONICS TECH CO LTD
Method of fabricating nanosized filamentary carbon devices over a relatively large-area
Nanosized filamentary carbon structures (CNTs) nucleating over a catalyzed surface may be grown in an up-right direction reaching a second surface, spaced from the first surface, without the need of applying any external voltage source bias. The growth process may be inherently self-stopping, upon reaching a significant population of grown CNTs on the second surface. A gap between the two surfaces may be defined for CNT devices being simultaneously fabricated by common integrated circuit integration techniques. The process includes finding that for separation gaps of up to a hundred or more nanometers, a difference between the respective work functions of the materials delimiting the gap space, for example, different metallic materials or a doped semiconductor of different dopant concentration or type, may produce an electric field intensity orienting the growth of nucleated CNTs from the surface of one of the materials toward the surface of the other material.
Owner:STMICROELECTRONICS SRL
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