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55results about How to "Large atomic number" patented technology
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Amorphous Oxide And Thin Film Transistor
InactiveUS20070194379A1High ionicityGeneration of oxygen defects is less frequentTransistorVacuum evaporation coatingCharge carrierElectron
The present invention relates to an amorphous oxide and a thin film transistor using the amorphous oxide. In particular, the present invention provides an amorphous oxide having an electron carrier concentration less than 1018 / cm3, and a thin film transistor using such an amorphous oxide. In a thin film transistor having a source electrode 6, a drain electrode 5, a gate electrode 4, a gate insulating film 3, and a channel layer 2, an amorphous oxide having an electron carrier concentration less than 1018 / cm3 is used in the channel layer 2.
Owner:JAPAN SCI & TECH CORP
Phase change material and non-volatile memory device using the same
ActiveUS20070120104A1Large atomic numberSmall diatomic bond strengthBulk negative resistance effect devicesSemiconductor devicesPhase-change memoryMetal alloy
The present invention provides a phase change memory cell comprising (GeASbBTeC)1−x(RaSbTeC)x solid solution, the solid solution being formed from a Ge—Sb—Te based alloy and a ternary metal alloy R—S—Te sharing same crystal structure as the Ge—Sb—Te based alloy. A nonvolatile phase change memory cell in accordance with the present invention provides many advantages such as high speed, high data retention, and multi-bit operation.
Owner:SK HYNIX INC
CeBr3 scintillator
ActiveUS7405404B1Improve light outputRapid responsePolycrystalline material growthMaterial analysis by optical meansCerium bromideImage resolution
The present invention provides a new scintillator, cerium bromide (CeBr3), for gamma ray spectroscopy. Crystals of this scintillator have been grown using the Bridgman process. In CeBr3, Ce3+ is an intrinsic constituent as well as a luminescence center for the scintillation process. The crystals have high light output (˜68,000 photons / MeV) and fast decay constant (˜17 ns). Furthermore, it shows excellent energy resolution for γ-ray detection. For example, energy resolution of <4% (FWHM) has been achieved using this scintillator for 662 keV photons (137Cs source) at room temperature. High timing resolution (<200 ps-FWHM) has been recorded with CeBr3-PMT and BaF2-PMT detectors operating in coincidence using 511 keV positron annihilation γ-ray pairs.
Owner:RADIATION MONITORING DEVICES
Lu1-xI3:Cex - a scintillator for gamma ray spectroscopy and time-of-flight PET
ActiveUS20050104002A1Improve light outputRapid responsePolycrystalline material growthMaterial analysis by optical meansLutetiumIodide
The present invention concerns very fast scintillator materials comprising lutetium iodide doped with Cerium (Lu1-xI3:Cex; LuI3:Ce). The LuI3 scintillator material has surprisingly good characteristics including high light output, high gamma ray stopping efficiency, fast response, low cost, good proportionality, and minimal afterglow that the material is useful for gamma ray spectroscopy, medical imaging, nuclear and high energy physics research, diffraction, non-destructive testing, nuclear treaty verification and safeguards, and geological exploration. The timing resolution of the scintillators of the present invention provide compositions capable of resolving the position of an annihilation event within a portion of a human body cross-section.
Owner:RADIATION MONITORING DEVICES
Cast collimators for ct detectors and methods of making same
InactiveUS20070064876A1Reduce X-ray doseLarge atomic numberMaterial analysis using wave/particle radiationHandling using diaphragms/collimetersHigh densityRadiology
Cast collimators for use in CT imaging systems are described, as are methods of making them. Such collimators may comprise pre-patient collimators, pre-patient filter / collimator assemblies, and / or post-patient collimators. The filters and / or collimators may be made of any suitable high-density, high atomic number material such as lead, a lead alloy, tantalum, tungsten, tungsten suspended in an epoxy matrix, tungsten suspended in a slurry, or the like. Embodiments of these collimators comprise specially-designed channels and vanes that allow them to be precision cast to the necessary degree of accuracy. These channels and vanes are preferably tapered. These collimators and filter / collimator assemblies help minimize the x-ray dose to the patient by minimizing the scattered radiation creation mechanism and by collimating out much of the scattered radiation that would otherwise be subjected to the patient. These collimators may be cast as either single piece structures, or multiple pieces that can be operatively connected together.
Owner:GENERAL ELECTRIC CO
Negative ion far infrared nanometer multifunctional material
ActiveCN106726628AImprove the ability of ionized air to generate negative ionsImprove the ability to generate negative ionsCosmetic preparationsToilet preparationsInfraredAir Ionization
The invention provides a negative ion far infrared nanometer multifunctional material, which comprises the following ingredients in parts by weight: 1 to 86 parts of ore powder, 1 to 115 parts of rare earth powder and 1 to 200 parts of silica gel. The functional material provided by the invention has the advantages that on the basis of the prior art, the functional material capable of obviously improving the capability of generating negative ions of ore and rare-earth salts through air ionization is provided; on the other hand, the infrared ray releasing capability of the ore and the rare-earth salts can be obviously improved.
Owner:惠州市申天地生物科技有限公司
Power electronic devices, methods of manufacturing the same, and integrated circuit modules including the same
ActiveUS20110068370A1Simple processUniform thicknessSemiconductor/solid-state device manufacturingSemiconductor devicesEngineeringLower upper
Power electronic devices including 2-dimensional electron gas (2DEG) channels and methods of manufacturing the same. A power electronic device includes lower and upper material layers for forming a 2DEG channel, and a gate contacting an upper surface of the upper material layer. A region below the gate of the 2DEG channel is an off region where the density of a 2DEG is reduced or zero. The entire upper material layer may be continuous and may have a uniform thickness. A region of the upper material layer under the gate contains an impurity for reducing or eliminating a lattice constant difference between the lower and upper material layers.
Owner:SAMSUNG ELECTRONICS CO LTD
Application of compound as scintillant material and preparation method thereof
ActiveCN109943322ALow priceEasy to prepareCopper compoundsLuminescent compositionsHalogenChemical compound
The invention belongs to the field of high performance scintillant materials and high-energy ray detection and discloses an application of a compound as a scintillant material and a preparation methodthereof. The compound has a chemical general formula AB2X3, wherein A is a monovalent alkali metal cation, B is a monovalent transitional metal cation and X is a monovalent halogen anion. The preparation method comprises the following specific step of preparing the compound with the chemical general formula AB2X3 based on an anti-solvent devitrification method, a cooling devitrification method, afused salt mixing method or a pulling method by taking AX and BX, the molar ratio of which is 1: 2, as raw materials. By regulating components of the compound, a novel scintillant material with the chemical general formula AB2X3 is obtained. The scintillant material has the characteristics of being non-toxic, stable, simple in preparation method and high in photoyield. As the novel scintillant, the material has a huge potential in the field of high energy detection and shows an application prospect of large-scaled industrial production.
Owner:HUAZHONG UNIV OF SCI & TECH
Synthesis of advanced scintillators via vapor deposition techniques
InactiveUS20100200757A1Eliminate needHighly efficient light transmissionCladded optical fibreVacuum evaporation coatingLutetiumHigh resolution imaging
Transparent optical ceramic coating materials have been fabricated from europium-doped lutetium oxide (Lu2O3:Eu) using physical vapor deposition and chemical vapor deposition techniques. The non-pixilated film coatings have columnar microcrystalline structure and excellent properties for use as radiological scintillators, namely very high density, high effective atomic number, and light output and emission wavelength suitable for use with silicon-based detectors having a very high quantum efficiency. The materials can be used in a multitude of high speed and high resolution imaging applications, including x-ray imaging in medicine.
Owner:TRUSTEES OF BOSTON UNIV
Intravascular imaging detector
InactiveUS20060178577A1Addressing Insufficient SensitivitySolve the low detection efficiencyDiagnostic recording/measuringSensorsBlood vesselIntravascular imaging
An apparatus for intravascular imaging to detect and characterize early stage, unstable coronary arty plaques. The detector works by identifying and localizing plaque-binding beta-emitting radiopharmaceuticals.
Owner:CMR NAVISCAN CORP +1
X-ray detector based on perovskite material and preparation method thereof
ActiveCN110676342ALarge atomic numberImprove mobilityFinal product manufactureSemiconductor devicesMetallic electrodeOrganic solvent
The invention discloses an X-ray detector based on a perovskite material and a preparation method of the X-ray detector. The method comprises the steps: 1, weighing AI and BI3 raw materials accordingto a molar ratio of 3: 2, and dissolving the AI and BI3 raw materials in an organic solvent to obtain a mixed precursor solution, wherein AI is CsI, CH3NH3I or RbI, and BI3 is BiI3 or SbI3; 2, sealingthe mixed precursor solution, heating the solution to 60-100 DEG C and maintaining the temperature for 2-48 hours to achieve full dissolution equilibrium, and then, taking supernate to obtain a completely saturated solution of the precursor; 3, placing the completely saturated solution of the precursor at an environment temperature lower than the heating termination temperature in the step 2, then, gradually carrying out heating at a speed of less than 5 DEG C / day until crystallization, and stopping heating until the temperature is continuously increased by at most 10 DEG C to obtain an A3B2I9 perovskite single crystal; 4, taking out the single crystal and carrying out drying; and 5, evaporating an interdigital metal electrode on the surface of the single crystal.
Owner:SHAANXI NORMAL UNIV
Intravascular imaging detector
InactiveUS20060195032A1Solve the low detection efficiencyAddressing Insufficient SensitivityDiagnostic recording/measuringSensorsBlood vesselIntravascular imaging
An apparatus for intravascular imaging to detect and characterize early stage, unstable coronary arty plaques. The detector works by identifying and localizing plaque-binding beta-emitting radiopharmaceuticals.
Owner:GAMMA MEDICA +1
Solid organic scintillator doped by one or more chemical elements
ActiveUS20130299742A1Large atomic numberLuminescent compositionsConversion screensFluorescenceChemical element
The invention relates to a solid organic scintillator comprising a polymeric matrix in which there are dispersed one or more fluorophore compounds and one or more chemical elements having an atomic number ranging from 40 to 83, characterized in that said scintillator has a weight content of said chemical elements of at least 5% by weight relative to the total weight of the scintillator, and in that the scintillator emits an emission spectrum comprising an emission peak at a wavelength of at least 550 nm.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Biomedical carbon/carbon composite material capable of being developed under X ray and preparation method thereof
InactiveCN102430152AImprove the development effectLarge atomic numberProsthesisFiberCarbon composites
The invention discloses a biomedical carbon / carbon composite material capable of being developed under X ray. The pores of the carbon / carbon composite material comprise Ta or Ta2O5 developing phases. The biomedical carbon / carbon composite material is prepared by the steps of: firstly preparing boron phenolic resin- absolute ethanol solution with mass fraction of 50%, then adding TaCl5 with mass percent of 0.5-2% to prepare an impregnant solution containing TaCl5, impregnating carbon fiber acupuncture pre-prepared body in the impregnant solution at the temperature of 40-60 DEG C for 60-120 minutes, solidifying according to processes of 150 DEG C for 3 hours, 180 DEG C for 4 hours and 200 DEG C for 3 hours, carrying out high-temperature carbonization in a tubular furnace under the protection of inert atmosphere, raising temperature to 800-1200 DEG C from room temperature at a heating speed of 1-2 DEG C / minutes, preserving heat for 30-60 minutes, cooling in the furnace after heat preservation, and repeating impregnation-solidifying-carburizing densification process 5-7 times. The carbon / carbon composite material disclosed by the invention has light weight, high strength and good biocompatibility, can be clearly developed under X ray, and can satisfy medical examination demands after being implanted to a human body.
Owner:TIANJIN UNIV
Preparing method of WMo mineral carbon composited anode target material for X ray tube with great power
ActiveCN101290852BHigh melting pointLarge atomic numberX-ray tube electrodesComputerised tomographsCarbon compositesAdhesive
Owner:JIANGSU JINSHENGYUAN SPECIAL VALVE
Schottky indoor temperature nucleus radiation detector and its making method
InactiveCN101241948ALarge atomic numberHigh resistivitySemiconductor devicesFilm structureRadiation resistance
The present invention discloses a schottky type room temperature nuclear radiation detector which comprises a schottky structure formed by the GaN substrate, a schottky electrode and an ohmic electrode, and the invention that the following characters: the GaN substrate is a thick film structure with thickness 100um to 200um, the schottky electrode and ohmic electrode are respectively arranged at surface at two sides of the GaN substrate. As the GaN material used in the invention has the following excellent capabilities of broad forbidden band width, high resistivity, large atomic number, better covalent bond combination, high melting point, high breakdown electric field, anti-corrosion and radiation resistance, the prepared room temperature nuclear radiation detector has excellent room temperature sensitiveness, detection efficiency and stability, and is more suitable for the detecting field of the high-radiation field. At the same time the manufacturing technique is simple and cost is low, and the invention is suitable to be industrially generalized.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
U-W-N ternary thin film as well as preparation method and application thereof
ActiveCN111826609AHigh chemical stabilityImprove coupling efficiencyNuclear energy generationVacuum evaporation coatingPhysicsThin membrane
The invention discloses a U-W-N ternary thin film and a preparation method and application thereof, belongs to the technical field of laser fusion engineering, and particularly relates to a U-W-N ternary thin film with black cavity dispersion reduction and protection effects and a preparation method and application of the U-W-N ternary thin film. The preparation method and application of the U-W-Nternary thin film aim to solve the problems that a structure layer of an existing uranium black cavity is complex, the regulation and control range of the N content in a UN<x> dispersion reduction / protection layer is limited, the stimulated Brillouin scattering inhibition capacity is limited, and M-band hard X rays of an Au protection layer and superheated electrons are prone to exciting. The mass fraction of N in the U-W-N ternary thin film is x%, x is larger than 0 and smaller than or equal to 66.7%, the mass fraction of W is y%, y is larger than 0 and smaller than or equal to 10%, and thebalance U. The preparation method comprises the steps that a direct-current reactive magnetron sputtering co-deposition method is adopted, N2 serves as reaction gas, magnetron sputtering deposition isconducted on a U target and a W target through a direct-current power source, and the U-W-N ternary thin film is obtained. And the U-W-N ternary thin film is applied to the black cavity as a dispersion reduction / protection layer.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Novel rare earth nano bimodal developer, preparation method thereof and application thereof
ActiveCN109172828ALarge atomic numberEasy accessInorganic active ingredientsGeneral/multifunctional contrast agentsImaging agentPancreatic cancer cell
The invention discloses a novel rare earth nanometer bimodal developer, and a preparation method thereof and an application thereof. The novel rare earth nanometer bimodal developer is NaHoF4@CeO2 nanoparticles, and the preparation of the developer comprises the following steps: 1) preparation of NaHoF4 nanoparticles, 2) preparation of CeO2 nanoparticles, 3) adding nanometer CeO2 into NaHoF4 to obtain NaHoF4@CeO2 nanometer particles, the imaging agent is used in CT and MRI bimodal imaging. Physical and chemical characterization and toxicity test showed that the nanoparticles had good biological safety. In vitro experiment showed that the nanoparticles had good CT and MRI bimodal imaging effect, and had radiotherapy sensitization effect on pancreatic cancer cells.
Owner:汪建华
Power electronic devices, methods of manufacturing the same, and integrated circuit modules including the same
ActiveUS8513705B2Simple processUniform thicknessSemiconductor/solid-state device manufacturingSemiconductor devicesEngineeringVolumetric Mass Density
Owner:SAMSUNG ELECTRONICS CO LTD
Method and device used for preparing ultra long type cold atomic cloud asymmetric two-dimensional magnetic optical trap
ActiveCN110473649ARaise the magnetic field gradientAvoid excessive currentNeutron particle radiation pressure manipulationQuantumCoherence effect
The invention belongs to the field of atom cooling and capturing technology, and provides a method and a device used for preparing an ultra long type cold atomic cloud asymmetric two-dimensional magnetic optical trap. The method comprises following steps: 6 cooling light beams enters into a MOT glass cavity, and meet at a point, the 6 cooling light beams are divided into three pairs, and the two light beams in each cooling light beam pair are designed to be correlation overlapped, the first cooling light beam pair is designed to travel along the X axis direction, and the second cooling light beam pair and the third cooling light beam pair are designed in the Y / Z plane with an angle equal to or larger than 120 DEG; a first rectangular coil pair parallel to the Y / Z plane and a second rectangular coil pair parallel to be X / Z plane are arranged at the surrounding of a window of the MOT glass cavity, the length of the second rectangular coil pair is designed to be 1.5 times of the length ofthe first rectangular coil pair, and the first rectangular coil pair and the second rectangular coil pair are all anti-Helmholtz coils. The method and the device can be used for preparing high atom number and high optical thickness ultra long cigar-shaped cold cesium atom cloud, and providing high quality experiment mediums for quantum coherence effect, quantum storage, and quantum precision measuring researches.
Owner:SHANXI MEDICAL UNIV
Tungsten/PEEK radiation protection composite wire for 3D printing and preparation method thereof
The invention discloses a tungsten / PEEK radiation protection composite wire for 3D printing and a preparation method thereof. Raw materials are weighed according to the following ratio (by weight): 100 parts of tungsten powder, 40-50 parts of a PEEK material, 0.25-0 .75 part of a plasticizer and 0.125-0.75 part of a titanate coupling agent. The tungsten / PEEK radiation protection composite wire for3D printing is prepared by the following steps: melting and stirring, twin-screw extrusion and granulation, single-screw extrusion of wires, wire leveling and cooling by a wire leveling machine, andreeling and bundling by a coiler. The composite wire of the invention is mainly applied in the nuclear electrical field. The tungsten / PEEK radiation protection composite wire has the following application advantages: the specially developed composite material is applied allusion to the 3D printing process and nuclear radiation protection field; and the PEEK material has excellent radiation resistance and superior mechanical properties in comparison with other polymer materials; breakthrough of zero in radiation protection composite materials in the 3D printing field is achieved, and the application of the 3D printing technology in the field of nuclear radiation shielding component manufacturing is also creatively advanced.
Owner:SOUTH CHINA UNIV OF TECH
Nuclear power plant containment concrete
ActiveCN108059405AImprove high temperature resistanceReduce porosityNuclear energy generationContainmentMetakaolinNuclear power plant
The invention relates to nuclear power plant containment concrete. The concrete consists of the following components in parts by mass: 130-200 parts of cement with strength of 52.5 or 42.5, 60-120 parts of slag, 50-100 parts of metakaolin, 50-150 parts of boron glass sand, 600-800 parts of nickel slag, 600-800 parts of barite, 200-400 parts of limonite, 100-300 parts of ceramsite, 20-50 parts of lead fibers, 130-160 parts of water, 4-6 parts of a water reducing agent and 4-6 parts of an early strength agent. After 28 days of curing of the concrete, the inner surface of the concrete is coated with a layer of anti-radiation coating. The nuclear power plant containment concrete provided by the invention has a good anti-radiation property, can well shield alpha, beta and gamma rays and neutronrays, and has good crack resistance, high-temperature resistance and durability, and simultaneously solid wastes such as nickel slag, glass powder and the like are utilized, so that the problems of resource waste and environmental pollution are solved to a certain extent.
Owner:SOUTHEAST UNIV
High energy photon power source
InactiveUS20060185718A1Improve reliabilitySensitive highPhotovoltaic energy generationSemiconductor devicesElectricityHigh energy
An energy cell, employed as a passive energy source, takes advantage of the differing electrical properties of metals to produce an induced electromagnetic force charge when exposed to dosages of high energy photons such as x-ray or gamma rays.
Owner:HARRIS CORP
Preparation of mixed-halogen halo-silanes
InactiveUS7030260B2High selectivityHigh yieldSilicon organic compoundsHalogenated silanesArylHalogen
The preparation of halosilanes having mixed-halogen substituents is described comprising providing an aryl-halo-silane having one more first halogens and one or more aryl groups, and substituting one or more of said aryl groups of said aryl-halo-silane with a second halogen having an atomic number greater than that of said first halogen.
Owner:HONEYWELL INT INC
Solid organic scintillator doped by one or more chemical elements
ActiveUS9499738B2Large atomic numberX-ray/infra-red processesLuminescent compositionsSolid massFluorescence
The invention relates to a solid organic scintillator comprising a polymeric matrix in which there are dispersed one or more fluorophore compounds and one or more chemical elements having an atomic number ranging from 40 to 83, characterized in that said scintillator has a weight content of said chemical elements of at least 5% by weight relative to the total weight of the scintillator, and in that the scintillator emits an emission spectrum comprising an emission peak at a wavelength of at least 550 nm.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Chemical-resistant multilayer radiation-proof glove
PendingCN112545087AExtended service lifeReduce erosionGlovesProtective garmentOrganic solventPolyvinyl alcohol
The invention provides a chemical-resistant multi-layer radiation-proof glove which is of a multi-layer structure and comprises at least one neutron protective layer, at least one X-ray and gamma-rayprotective layer and at least one polyvinyl alcohol layer, and the polyvinyl alcohol layer is a middle layer. The chemical-resistant multi-layer radiation-proof glove has excellent anti-radiation capability and radiation aging resistance, can effectively protect the radiation of X-rays, gamma-rays, neutrons, deuterium, tritium and the like, and can also effectively protect organic solvents and other chemicals, so that the service life of the radiation glove is greatly prolonged; therefore, the life health of nuclear industry employees can be better protected.
Owner:CHEMCHINA ZHUZHOU RUBBER RES & DESIGN INST
Resist composition and patterning process
ActiveUS10303052B2High resolutionMinimal LWRSemiconductor/solid-state device manufacturingPhotomechanical coating apparatusResistIodine
A resist composition comprising a 2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane, biguanide or phosphazene salt of tetraiodophenolphthalein, tetraiodophenolsulfonphthalein or tetraiodofluorescein exhibits a sensitizing effect and an acid diffusion suppressing effect and forms a pattern having improved resolution, LWR and CDU.
Owner:SHIN ETSU CHEM IND CO LTD
Neutron deceleration composite material
PendingCN113897526ALow radioactivityFree from harmX-ray/gamma-ray/particle-irradiation therapyAluminum fluorideMulti material
The invention discloses a neutron deceleration composite material. The neutron deceleration composite material comprises a mixed material, a material which accounts for 0.1-5% of the weight of the mixed material and contains a 6Li element, and Cu which accounts for 0.1-5% of the weight of the mixed material, and the mixed material comprises one or a mixture of more of Al, MgF2 and AlF3; the mixed material comprises the following components in percentage by mass: 10-95% of pure aluminum powder, 20%-80% of aluminum fluoride powder, 0.1%-15% of magnesium fluoride powder; the material containing the < 6 > Li element is < 6 > LiF powder; the mixed material further comprises pure magnesium powder, and the mass percent of the pure magnesium powder is 0.1-5%. The radioactivity of the material can be attenuated to an exemption level or below within a short time when the material is decommissioned at the last stage of the device or equipment, and the neutron deceleration composite material has obvious advantages in the aspects of radioactive waste disposal method and economy.
Owner:CHINA SPALLATION NEUTRON SOURCE SCI CENT +1
High energy photon detector and power source with MEMS switch
InactiveUS20060180756A1Increase volumeLarge atomic numberElectrostatic dosimetersElectric discharge tubesElectricityHigh energy
An energy cell, employed as a passive energy source or a detector for sensing high energy photons, takes advantage of the differing electrical properties of metals to produce an induced electromagnetic force charge when exposed to dosages of high energy photons such as x-ray or gamma rays.
Owner:NORTH SOUTH HLDG
Chemically Amplified Resist Composition and Patterning Process
ActiveUS20180136558A1High resolutionIncrease contrastPhotomechanical coating apparatusPhotomechanical exposure apparatusResistIodide
Owner:SHIN ETSU CHEM IND CO LTD
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