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89 results about "Quasi one dimensional" patented technology
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Quasi one dimensional implies that we still have variations of flow quantities in one direction only but we allow the cross section area of stream tubes to vary along the same direction as well.
Multichannel micro-fluidic chip specially used for AIDS diagnosis and comprising quasi-one-dimensional sensitive electrodes
InactiveCN101581725AFast diagnosisReduce diagnostic costsMaterial electrochemical variablesMagnetic beadCapillary channel
The invention relates to a multichannel micro-fluidic chip specially used for AIDS diagnosis and comprising quasi-one-dimensional sensitive electrodes, belonging to the field of test. One of the hopes in the progress of medical techniques is to quickly diagnose AIDS at low cost. The invention provides a micro-fluidic chip that uses a plurality of AIDS characteristic antibodies to simultaneously detect and quickly diagnose AIDS. The chip is provided with three micro liquid storage tanks. The key points of the proposal lie in that the inner of the chip contains capillary channels of parallel structure, the parallel structure contains four micro-channels mutually connected in parallel, four working electrodes of bead string structure in total are respectively arranged in the four micro-channels, the substances on the superficial coats of the four working electrodes of bead string structure are respectively four antibody substances, namely, AIDS antibodies p24, gp41, gp120 and gp36. The application of the chip is conducive to increasing the diagnosis efficiency of AIDS as shown by the structural characteristics.
Owner:NINGBO UNIV
Quasi-one-dimensional metal oxide nano-material biosensor and method for manufacturing same
ActiveCN101592626AHigh sensitivityQuick responseTelevision system detailsPiezoelectric/electrostriction/magnetostriction machinesQuasi one dimensionalField-effect transistor
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Method and system for measuring quasi one-dimensional nano-material Seebeck coefficient
InactiveCN101354388AGet real attributesGood repeatabilityMaterial thermal analysisPotential differenceMicrometer scale
The invention discloses a method and a system that are used for measuring the Seebeck coefficient of a quasi-one-dimensional nano material; two line transition electrodes with micrometer-scaled cross sections are respectively contacted with two centimeter-scaled block metal electrodes, a nano probe system is utilized for leading a single rod of the quasi-one-dimensional nano material to be detected to be connected with the two transition electrodes, temperature difference between the two block metal electrodes is altered, and the temperature difference and corresponding potential difference between the two electrodes are simultaneously measured, thus obtaining the Seebeck coefficient of the quasi-one-dimensional nano material. The corresponding testing system comprises three parts of an experimental platform, a temperature altering device and a data collecting and processing device. The method and the system solve the problem of the contact transition between the centimeter-scaled electrodes and the nano sample to be detected through the micrometer-scaled transition electrodes, utilize the nano probe system for installing the nano material, and lead the nano material not to be randomly dispersed at two sides of the electrodes, thus improving experimental success rate, controllability and reliability; and the provided measuring system has the advantages of simple structure, low cost and easy popularization and the like.
Owner:PEKING UNIV
Superconducting quantum bit chip
ActiveCN109376870APrevent Interconnect BreakpointsIncrease flexibilityQuantum computersMicrowave cavityChain structure
The invention discloses a superconducting quantum bit chip, comprising a quasi-one-dimensional network chain structure layout superconducting quantum bit array and a manipulating and reading microwavecircuit, wherein each mesh unit comprises n qubits, and m (m and n are natural numbers, n>m>=2) shared qubits between adjacent networks are used for interconnection between mesh units; Each superconducting qubit in the mesh unit is coupled to the same coplanar superconducting microwave cavity for interconnection of qubits in the network. Each qubit is coupled to a coplanar superconducting microwave cavity and further coupled to a coplanar microwave transmission line, and is connected to an external circuit for qubit state reading. The present application can effectively prevent the possibility of qubit interconnection breakpoints, greatly improve interconnection reliability, increase the flexibility of error correction coding design, effectively reduce the complexity of qubit manipulationand reading circuits, and has an important scientific research and industrial application prospect.
Owner:TSINGHUA UNIV
Quantum computer
ActiveCN109685216AReduce hardware resource consumptionReduce hardware costsQuantum computersResonant cavityResource consumption
The quantum computer comprises a quasi-one-dimensional layout superconducting quantum bit array, a control circuit and a reading circuit, The superconducting quantum bit array comprises two or more than two net-shaped units which are arranged in a net chain shape. The control circuit is coupled with the superconducting quantum bits through a microwave transmission line and used for controlling thesuperconducting quantum bits in a preset mode; And the reading circuit is coupled to one path of microwave signal line by a coplanar superconducting microwave resonant cavity for reading, is connected with an external circuit, and is used for reading the quantum state of the superconducting quantum bit by adopting a frequency division multiplexing mode. According to the embodiment of the invention, the hardware resource consumption of the quantum computer is reduced.
Owner:TSINGHUA UNIV
Quasi one-dimensional nano structural thermoelectric material, device and preparation method thereof
InactiveCN101969095AOptimal Control StructureFast preparationThermoelectric device manufacture/treatmentThermoelectric device detailsThermoelectric materialsNanowire
The invention discloses a quasi one-dimensional nano structural thermoelectric material, a device and a preparation method thereof. The thermoelectric material comprises an insulating substrate, at least two thermoelectric material layers ant at least two phonon scattering layers; parallel nano grooves arranged periodically are distributed on the surface of the insulating substrate, and the cross sections of the grooves have rectangular fluctuated structures; the thermoelectric material layers are covered on the surface of the substrate, and the cross sections of the thermoelectric material layers have rectangular fluctuated periodical structures; and the thermoelectric material layers and the phonon scattering layers are alternately covered in rectangular fluctuated periodical structures. The size of the nano wire cross section can be controlled by changing the size of the substrate grooves and the deposition time, the scattering of phonons transmitted along the nano wire direction can be increased by changing the nano wire cross section area and the interface between the nano wires, the thermal conductivity of the material can be reduced, and the thermoelectric conversion efficiency of the material can be improved; and the prepared device has high thermoelectric conversion efficiency and good thermal stability.
Owner:SUN YAT SEN UNIV
Preparation of semiconductor and metal quasi-one-dimensional nano heterogeneous cycle structure array
InactiveCN101486442ALarge aspect ratioLow costNanostructure manufactureElectrolytic agentQuasi one dimensional
The invention pertains to the technical field of preparing semiconductor and metal quasi-one-dimensional nanometer heterogeneous cycle structure array material by an electrochemical deposition method. The semiconductor is PbTe or PbSe and the metal is Pb. The preparation process is as follows: an electrolyte containing Pb and HTeO or HSeO is prepared and poured between two lead foil electrodes in a semi-enclosed electrolytic cell; the electrolyte is cooled and frozen at the temperature between minus 3.0 DEG C and minus 7.0 DEG C; square wave is exerted on the electrodes; deionized water is applied to cleaning the base after preparation; and the semiconductor and the metal quasi-one-dimensional nanometer heterogeneous cycle structure array material are obtained. The invention has low preparation cost and needs no template; the material has large length-diameter ratio, and lines are in parallel arrangement; the structure of the material can be controlled by freezing temperature and square wave voltage.
Owner:JILIN UNIV
Method for preparing monocrystalline one-dimensional or quasi one-dimensional organic nanomaterial by solution method
InactiveCN102041556AConditions that regulate the interaction forceTopography adjustmentPolycrystalline material growthFrom normal temperature solutionsSimple Organic CompoundsQuasi one dimensional
The invention discloses a method for preparing a monocrystalline one-dimensional or quasi one-dimensional organic nanomaterial. The method comprises the following steps of: 1) dissolving an organic compound in a good solvent to form solution, and mixing the solution and a poor solvent of the organic compound and stirring to obtain a crystal nucleus of the organic compound in the mixed solution, wherein the good solvent and the poor solvent are mutually soluble; and 2) standing and aging the mixed solution containing the crystal nucleus of the organic compound to obtain the monocrystalline one-dimensional or quasi one-dimensional organic nanomaterial. In the method, a simple solvent exchange method is utilized, and a series of organic nanomaterials with various shapes are successfully prepared by combining an exchange solvent nucleation mechanism with a mechanism for guiding crystal nucleus growth under intermolecular super-molecular interaction. The method has the advantages of preparing the nanomaterial on a large scale, along with simple preparation process, low cost and high controllability, so the method is a good method for controllably preparing the monocrystalline organic nanomaterial on a large scale.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Method and device for measuring heat conductivity of quasi-one-dimensional conductive material
ActiveCN104880482AAvoid errorsAccurate convection heat dissipationMaterial heat developmentFiberElectrical resistance and conductance
The invention discloses a method and a device for measuring the heat conductivity of a quasi-one-dimensional conductive material. The method comprises the following steps: putting the quasi-one-dimensional conductive material with the length L and the cross section S of a suspended section into a T0 environment; applying current I and heating by the suspended section to achieve heat balance; measuring R of the suspended section at the heat balance by using working current; changing the current I to obtain a plurality of Rs corresponding to the different currents I of the suspensed section; carrying out linear fitting of I2 and 1 / R on the plurality of currents I and the plurality of corresponding Rs; obtaining a change rate k and an intercept 1 / R0 of the 1 / R along the I2 according to the result so as to obtain a resistance value R0 when the suspended section does not have the heat effect; and determining the appearance heat conductivity lambda' of the suspended section under the T0 according to the length L and the cross section S of the suspended section, the inclined slope k, the resistance value R0 and a linear change rate B of the resistance R along the temperature T. The method is simple and convenient, cheap and efficient, and can be applied to the measurement of the heat conductivity of micro-nano conductive fibers and conductive thin films.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI
Flexible Dye-sensitized Solar Cells (DSSCs) based on titanium dioxide nanometer rod array film and preparation method thereof
InactiveCN102231332ALight in massEasy to carryLight-sensitive devicesSolid-state devicesQuasi one dimensionalThin layer
The invention disclose flexible Dye-sensitized Solar Cells (DSSCs) based on a titanium dioxide nanometer rod array film. The DSSCs comprise flexible quasi-one-dimensional photoanodes, a dye sensitizing agent, electrolyte and flexible counter electrodes. The flexible quasi-one-dimensional photoanodes are composed of a flexible transparent conductive substrate, a TiO2 nanometer particle thin layer and a TiO2 nanometer rod array thin layer which are superposed from outside to inside. The TiO2 nanometer particle thin layer is closely connected with the flexible transparent conductive substrate. The TiO2 nanometer rod array thin layer grows on the TiO2 nanometer particle thin layer. Dye is absorbed on the TiO2 nanometer rod array. The flexible Dye-sensitized Solar Cells (DSSCs) in the invention have the advantages of increase of electron transmission speed, reduction of electron composite, portability and foldability.
Owner:ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Preparation method of quasi one-dimensional boron nitride nanostructure
The invention discloses a controlled preparing method of pseudo one-dimensional boron nitride nanometer structure through adjusting preparation parameter to control diverse pseudo one-dimensional boron nitride nanometer structure, which comprises the following steps: choosing bis nickel, bis ferrum, bio cobalt or the mixture as suspended activator forerunner body; volatilizing in the low temperature region; carrying through gas-carrier to high-temperature region; disintegrating to metallic catalyst; accelerating B2O2 vapour generated through mixing boron powder and boron oxide to react with ammonia gas; generating the product; getting boron nitride nanometer thread and bamboo joint state boron nitride nanometer pipe with diverse diameter and outlook through controlling component, time, temperature of the activator. The structure of the boron nitride nanometer thread and pipe possesses essential difference, which the front (0002) face grow vertically and the back (0002) face parallel-grows.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Method for preparing titanium dioxide-zinc oxide nuclear shell structure nanometer fiber membrane for dye sensitized battery
InactiveCN102496471AImprove performanceIncrease the open circuit voltageLight-sensitive devicesSolid-state devicesFiberQuasi one dimensional
The invention discloses a method for preparing a titanium dioxide-zinc oxide nuclear shell structure nanometer fiber membrane, which is characterized in that: a light anodized membrane is a core part of a dye sensitized solar battery, physical and chemical decoration such as surface coverage is undertaken on the light anodic membrane, and development of a novel nanometer structure light anodic membrane is an important way for improving the property of the dye sensitized solar battery. A unique coaxial electrostatic spinning technique is adopted to prepare the titanium dioxide (TiO2) / zinc oxide (ZnO) nuclear shell structure nanometer membrane for a dye sensitized solar battery light anode. Due to the adoption of the technique, the formation of a standard quasi one-dimensional nanometer structure and the shell wrapping treatment for preventing the recombination of electric charges can be simultaneously realized. Crystal boundaries of the quasi one-dimensional nanometer structure is fewer, so the electronic recombination can be reduced, and short-circuit current Isc of the battery can be improved. By introducing a shell, an open-circuit voltage Voc of the battery can be increased. Correspondently, overall transformation efficiency Eta of the battery can be improved by 18 percent to 27 percent.
Owner:ZHEJIANG SCI-TECH UNIV
Method for preparing carbon nano material by micro wave radiation of coal
The present invention discloses microwave irradiation process of preparing nanometer carbon material, including great specific surface area active carbon and quasi one-dimensional nanometer carbon material. The preparation process of great specific surface area active carbon includes the steps of: mixing washed coal and activator in certain ratio and milling, irradiating in a microwave oven to heat, burn and arc, water washing and recovering activator, acid pickling, water washing and stoving. The preparation process of quasi one-dimensional nanometer carbon material includes the steps of: mixing washed coal and catalyst in certain ratio and milling, irradiating in a microwave oven to heat, burn and arc, and purifying. The present invention has short preparation period, low power consumption, low cost, less pollution and easy use in industrial production.
Owner:梁逵
Organic-inorganic composite all-solid electrolyte, a preparation method and application thereof
InactiveCN109256583AHigh strengthAvoid short circuit conditionsSolid electrolytesFinal product manufactureComposite electrolytePolyethylene oxide
The invention discloses an organic-inorganic composite all-solid electrolyte, 40.0 to 80.0 wt% of polyethylene oxide, 15.0 to 30.0 wt% of polypropylene carbonate, 1.0 to 10.0 wt% of pseudo-one-dimensional inorganic fast ionic conductor and 4.0 to 20.0 wt% of lithium salt, which are mainly compose of polyethylene oxide, polypropylene carbonate, lithium salt and pseudo-one-dimensional inorganic fastionic conductor. The preparation method of the invention comprises the following steps: (1) adding a quasi-one-dimensional inorganic fast ionic conductor into a lithium salt solution, stirring, and uniformly dispersing; (2) sequentially adding polyethylene oxide and polypropylene carbonate into the solution after the step (1), stirring, and uniformly dispersing; (3) coating the mixed solution after the step (2) on the film-forming substrate and drying to obtain the composite electrolyte. The quasi-one-dimensional inorganic fast ionic conductor is introduced into the organic-inorganic composite all-solid electrolyte of the invention, which can effectively reduce the crystallinity, has high ionic conductivity and excellent mechanical properties, and can largely avoid the situation that a lithium dendrite punctures the separator and causes a short circuit inside the battery.
Owner:CHANGSHA RES INST OF MINING & METALLURGY
Attapulgite loaded quasi-one-dimensional titanium dioxide composite photocatalyst and preparation method thereof
InactiveCN103551136AAvoid reunionNo areaCatalyst activation/preparationQuasi one dimensionalTitanium dioxide
The invention relates to the technical fields of nano-materials and photocatalysis, in particular to an attapulgite loaded quasi-one-dimensional titanium dioxide composite photocatalyst and a preparation method thereof. The carrier of the composite photocatalyst is attapulgite, and pine needle shaped nano-scale titanium dioxide particles are uniformly distributed on the surface of the attapulgite. The preparation method includes hydrolytic precipitation loading of nano-titanium dioxide and subsequent heat treatment processes. The composite photocatalyst provided by the invention is prepared by a hydrolytic precipitation loading technique. Attapulgite is taken as the carrier to make the quasi-one-dimensional nano-TiO2 particles fixed on the surface to form a stable TiO2 / attapulgite photocatalyst. The quasi-one-dimensional pine needle shaped nano-scale iO2 particles are uniformly distributed on the surface of the attapulgite, so that agglomeration of TiO2 particles can be avoided, and the problems of TiO2 photocatalyst specific surface area decrease and photocatalytic performance degradation caused by the agglomeration effect cannot appear. At the same time, without additional equipment and energy consumption, recovery and reuse of the photocatalyst can be realized.
Owner:HEFEI UNIV OF TECH
Mold and method for preparing ceramic matrix composite coil spring of SiC fiber
The invention relates to a mold and method for preparing a ceramic matrix composite coil spring of SiC fiber. The method comprises the following steps: firstly, adopting silicon carbide fiber to prepare a quasi-one-dimensional fiber braided rope, and adopting the SiC fiber rope to prepare a coil spring preform; preparing a BN interfacial layer on the surface of the SiC fiber of the preform by adopting a chemical vapor infiltration method, then pre-densifying the coil spring preform, and processing coil spring blades on a multi-axis CNC machine tool by adopting special cutters of cubic boron nitride or diamond; finally preparing an anti-oxidation coating. The beneficial effects that the structure is simple, the designability is strong, the molding efficiency is high, the preparation cost is low, and the like are achieved. The coil spring provided by the invention is molded by near-size, and is high in molding precision and less in removal amount of blank materials; the diameter of prepared SiC / SiC spiral filament is 0.5-5 mm, and the shear strength range of a spring spiral filament material is 200-500 MPa; the coefficient of the spring stiffness is 10-50 N / mm.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Micro/nano array and application thereof in micro/nano material standard bending strain loading
ActiveCN103663354ARealize the loadAchieving Standard Bending Strain LoadingDecorative surface effectsCoupling light guidesMicro nanoDot matrix
The invention discloses a micro / nano array and application thereof in micro / nano material standard bending strain loading. The micro / nano support array is composed of a substrate and a plurality of column-shaped structures which are located vertically on the substrate and are distributed at intervals to serve as supporting points. A micro / nano supporting dot matrix pattern can be defined freely. The micro / nano array is used for standard bending strain loading of quasi-one-dimensional micro / nano materials with different lengths and thicknesses, and has great application prospects in development of microforce and displacement sensors, flexible micro-nano biology, photoelectric detection and many other aspects.
Owner:PEKING UNIV
Special multichannel syphilis diagnosis device combined with quasi-one-dimensional specific antigen modified electrodes
InactiveCN101581724AReduce diagnostic costsImprove diagnostic efficiencyMaterial analysis by electric/magnetic meansSyphilisQuasi one dimensional
The invention relates to a special multichannel syphilis diagnosis device combined with quasi-one-dimensional specific antigen modified electrodes. The device is a micro-fluidic chip, belonging to the field of analysis test. One of the targets of the relevant diagnosis and treatment technologies is to quickly diagnose syphilis patients with low cost. The invention provides a diagnosis device aiming to achieve the target. The key points of the proposal are that the device, namely the micro-fluidic chip, comprises channels of parallel structure inside, the parallel structure comprises four branch channels mutually connected in parallel, four catenulate working electrodes in total are respectively arranged in the four branch channels, the catenulate working electrode is composed of a conductive electrode and a gold size sensing membrane that attaches onto the conductive electrode and is embedded with the syphilis specific antibody, and the respective gold size sensing membranes on the superficial coats of the four catenulate working electrodes are respectively embedded with four different syphilis specific antibody substances which are respectively syphilis specific antibodies TP0684, TP0453, TP0821 and TP0319.
Owner:NINGBO UNIV
Titanium/graphene nanoribbon composite anode material and preparation method thereof
ActiveCN107482207AExcellent charge and discharge characteristicsImprove cycle lifeMaterial nanotechnologyNegative electrodesQuasi one dimensionalUltrasonic dispersion
The invention discloses a titanium / graphene nanoribbon composite anode material and a preparation method thereof. The anode material is a quasi-one-dimensional nano composite material formed through titanium in a nano-particle shape limited in a graphene nanoribbon. The preparation method comprises the steps that 1, the oxidized graphene nanoribbon is added into an organic solvent, and ultrasonic dispersion is conducted; 2, a titanium source and water are added, centrifugal separation is conducted after heating reflux is conducted, and washing, filtering and drying are conducted on segment; 3, in protective atmosphere, heating treatment and cooling are conducted to obtain the titanium / graphene nanoribbon composite anode material. According to the composite anode material, under 0.01-3.0 V and 500 mA.g-1, the first reversible specific capacity is 375.7 mAh.g-1, after 100 times of circulation, the reversible specific capacity is 320.8 mA.g-1, and under 8000 mA.g-1, the reversible specific capacity can reach 206.7 mAh.g-1, so that the electrohemical performance is good; the method is simple and suitable for industrial production.
Owner:CENT SOUTH UNIV
Simultaneous detection biological sensor by utilizing capacitance and conduction of quasi-one-dimensional nanometer material field effective tube
InactiveCN101625358AHigh sensitivityFast biomoleculesMaterial resistanceMaterial capacitanceCapacitanceQuasi one dimensional
The invention provides a simultaneous detection biological sensor by utilizing capacitance and conduction of a quasi-one-dimensional nanometer material field effective tube based on the sensitivity property of the capacitance and the conduction of the quasi-one-dimensional nanometer material field, belonging to the technical field of micro-machine systems and biological nanometer sensing. The simultaneous detector sensor mainly consists of an insulating layer, a metal electrode, a quasi-one-dimensional nanometer material, a groove and a groove bottom biological modifying layer, a metal gate and a microfluidic channel, wherein the insulating layer is positioned on an upper silicon slice; the metal electrode, the quasi-one-dimensional nanometer material, the groove and the groove bottom biological modifying layer are positioned on the insulating layer; the metal gate is positioned on a lower silicon slice; and the microfluidic channel is formed by the metal gate and the groove. The quasi-one-dimensional nanometer material field effective tube is utilized and is biologically modified, and antigen antibody reaction is utilized to affect a gate electric field so as to change the conductance of the quasi-one-dimensional nanometer material channel and the capacitance of the field effective tube so as to realize biological molecule or virus detection technology with high sensitivity, rapidness and accuracy. Combining the MEMS technology with the back silicon chip biological modification technology, the invention is simple to process, is suitable for large-batch production, and is easy for integration and promotion application.
Owner:BEIJING INFORMATION SCI & TECH UNIV
MoS2/GNRs composite material with loose three-dimensional winding structure, preparation method and application thereof
ActiveCN107394184AHigh yieldLoose three-dimensional winding structureMaterial nanotechnologyPhysical/chemical process catalystsGraphene nanoribbonsQuasi one dimensional
The invention discloses a MoS2 / GNRs composite material with a loose three-dimensional winding structure. The composite material is of a loose three-dimensional network structure formed by mutual winding and interweaving of quasi-one-dimensional GNRs; two-dimensional layered MoS2 with fewer layers and large interlayer spacing grows in the structure dispersedly, a large amount of gap channels are arranged and are beneficial to diffusion of electrolyte in a solution, and the own good electrical conductivity of nanoribbons is beneficial to fast transmission of electrons in the composite material. A preparation method of the composite material comprises the following steps: adopting (NH4)6Mo7O24.4 H2O, CS(NH2)2, H2C2O4.2H2O and graphene nanoribbons as materials with the amount ratio of Mo / S / H2C2O4 being 1:2:1, adopting a hydrothermal method to carry out annealing treatment under the atmosphere of nitrogen gas to prepare and obtain the MoS2 / GNRs composite material with the loose three-dimensional winding structure.
Owner:FUZHOU UNIV
Electrode for realizing ohmic contact with n type ZnS quasi-one-dimensional nanometer material and preparation method thereof
InactiveCN102231387ASimple preparation processEasy to controlSemiconductor devicesOhmic contactQuasi one dimensional
The invention discloses an electrode for realizing an ohmic contact with an n type ZnS quasi-one-dimensional nanometer material and a preparation method thereof. The electrode provided in the invention is characterized in that the electrode is AZO or ITO transparent electrodes and is directly formed on the n type ZnS quasi-one-dimensional nanometer material. The electrode is prepared by a magnetron sputtering method or a pulsed laser deposition method and the prepared electrode is processed by a post-annealing treatment, so that the ohmic contact between the electrode and the ZnS quasi-one-dimensional nanometer material can be further improved. According to the invention, the problem of the direct ohmic contact between the electrode and the n type ZnS quasi-one-dimensional nanometer material can be solved. The electrode provided in the invention can be used for preparation and research of relevant devices of the n type ZnS quasi-one-dimensional nanometer material. Moreover, the preparation method of the electrode is simple, reliable and is easy to operate.
Owner:HEFEI UNIV OF TECH
A solid-state polymer composite electrolyte and a preparation method and application thereof
InactiveCN109119691ALarge specific surface areaQuick migrationSecondary cellsPolyethylene oxideElectrical conductor
The invention discloses a solid-state polymer composite electrolyte, which is mainly composed of polyethylene oxide, lithium salt and a quasi-one-dimensional inorganic fast ionic conductor. The molarratio of the polyethylene oxide to lithium salt is (15-20): 1, and the mass ratio of the polyethylene oxide to quasi-one-dimensional inorganic fast ionic conductor is 100: (1-20). The preparation method of the invention comprises the following steps: (1) adding a quasi-one-dimensional inorganic fast ionic conductor into a lithium salt solution, stirring, and uniformly dispersing; (2) adding the polyethylene oxide powder into the solution after the step (1), stirring, and uniformly dispersing; and (3) coating the mixed solution after the step (2) on a film-forming substrate and drying to obtainthe composite electrolyte. A solid-state secondary lithium battery using the solid-state polymer composite electrolyte of the present invention has good cycle and rate performance, and has good coulombic efficiency and capacity retention.
Owner:CHANGSHA RES INST OF MINING & METALLURGY
Sialon nano non-woven fabric and preparation method thereof
InactiveCN101570919AHigh purityHigh mechanical strengthNon-woven fabricsNano structuringQuasi one dimensional
The invention relates to a Sialon nano non-woven fabric, which is a fiber web fabric with a Sialon quasi-one-dimensional nano structure formed by self-assembling a SiAlONC precursor thin layer coated on the surface of a graphite flake or a piece of graphite paper through the air pressure reaction of high-pressure nitrogen. A preparation method for the nano non-woven fabric comprises the following steps: coating SiAlONC precursor slurry of which thickness is 0.1 to 5 millimeters on the surface of the graphite flake or the graphite paper, placing the graphite flake or the graphite paper coated with the slurry into an atmospheric pressure sintering furnace, introducing nitrogen into the furnace, preserving heat for 1 to 3 hours under the conditions of controlling the nitrogen pressure in the furnace at 0.3 to 2.0MPa and controlling the temperature to between 1,200 and 1,600 DEG C, forming the Sialon nano non-woven fabric on the surface of the graphite flake or the graphite paper, and finally removing the graphite flake or the graphite paper by burning to obtain the pure Sialon nano non-woven fabric. The Sialon nano non-woven fabric has the advantages of good dielectric property, high strength, corrosion resistance, and good evenness and operability.
Owner:HARBIN INST OF TECH AT WEIHAI
Silicon solar battery
InactiveCN101055900ALow purity requirementAchieve photoelectric conversion efficiencyPhotovoltaic energy generationSemiconductor devicesHeterojunctionQuasi one dimensional
The invention discloses a silicon solar cell structure, including a battery back electrode, a semiconductor silicon substrate and a semiconductor film layer having Fermi energy level different from the semiconductor silicon substrate. A quasi one-dimensional nanocrystalline body structure is prepared at the surface of material light-receiving surface in the semiconductor silicon substrate. The hole of this nanocrystalline body structure layer is filled by the semiconductor film layer, both of which form a heterojunction having the action of separating the photon-generated carrier. Because of the use of the quantum size effect, the volume effect and the surface effect in the structure, the silicon material with lower purity is used to make the silicon solar cell, and a satisfactory photoelectric conversion efficiency is obtained.
Owner:SHANGHAI SOLAR ENERGY S&T
Self-driven near infrared photodetector based on potassium sulfate quasi-one-dimensional nanostructure and preparation method thereof
ActiveCN107123699AGood electrical transport propertiesReduce manufacturing difficultySemiconductor devicesHeterojunctionPhotodetector
The invention discloses a self-driven near infrared photodetector based on a potassium sulfate quasi-one-dimensional nanostructure and a preparation method thereof. The method comprises the steps that a KCu7S4 monolayer film assembled by a KCu7S4 quasi-one-dimensional nanostructure through an LB technology is transferred to an n-type silicon substrate on which an insulating region is constructed; the KCu7S4 monolayer film contacts the silicon substrate to form a Si / KCu7S4 heterojunction; a first metal thin film electrode in ohmic contact with the KCu7S4 monolayer film is deposited on the insulating region; and a second metal thin film electrode in ohmic contact with silicon is prepared on the back of the silicon substrate, and the self-driven near infrared photodetector is acquired. The self-driven near infrared photodetector provided by the invention has the advantages of simple preparation process, superior device performance and good compatibility with the existing semiconductor technology.
Owner:合肥庐阳科技创新集团有限公司
Lithium sulfur battery cathode material and preparation method thereof
ActiveCN104835966AImprove the first Coulombic efficiencyImprove cycle stabilityElectrode carriers/collectorsFiberNano structuring
The invention discloses a lithium sulfur battery cathode material and preparation method thereof, and belongs to the technical field of lithium battery cathode material preparation. The preparation method of the lithium sulfur battery cathode is as follows: uniformly mixing polymer fiber and elemental sulfur, placing the mixed polymer fiber and elemental sulfur in a closed reaction container, raising temperature to 200-500 DEG.C in the inert gas atmosphere, keeping temperature for 0.5-12 hours, and performing cooling to obtain the lithium sulfur battery cathode material. The diameter of the polymer fiber is 100-5000nm, and the mass proportion of the polymer fiber to the elemental sulfur is 1: 1-1: 10. The lithium sulfur battery cathode material disclosed by the invention uses the polymer fiber with a quasi-one-dimensional nano-structure as a carrier, the obtained lithium sulfur battery cathode material is regular in feature; in the charging / discharging process of the lithium sulfur battery, a diffusion path of the lithium ion in the cathode material is about the size of the fiber semi-diameter, and the diffusion path is short; therefore, the lithium sulfur battery cathode material has high first coulombic efficiency and good cyclic stability in large current charging / discharging.
Owner:CHERY AUTOMOBILE CO LTD
Preparation method of quasi one-dimensional boron nitride nanostructure
The invention relates to a controllable preparation method of a quasi-one-dimensional boron nitride nanostructure. By adjusting the preparation parameters, various quasi-one-dimensional boron nitride nanotubes, stacked cup-shaped boron nitride nanowires and other quasi-one-dimensional can be prepared under control. Nano structure, large yield and high purity of the product. The specific method is: use nickelocene, ferrocene, cobaltocene or their mixture as the floating catalyst precursor, volatilize in the low temperature area and be carried by the carrier gas to the high temperature area to decompose into a metal catalyst, and promote the mixture of boron powder and boron oxide to form B2O2 vapor reacts with ammonia to form one-dimensional boron nitride nanostructures with different morphologies. Boron nitride nanowires and bamboo-shaped boron nitride nanotubes with different diameters and shapes can be obtained by controlling reaction parameters such as catalyst components, reaction time, catalyst evaporation temperature, and ammonia flow rate. The obtained boron nitride nanowires and nanotubes have essentially different structures, the former (0002) plane grows vertically to the axial direction, and the latter (0002) plane grows parallel to the axial direction.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Nano fiber coupling structure gas sensitive material and preparation method and application thereof
InactiveCN104407018ABest operating temperatureImproving Hydrogen Sensing PerformanceMaterial nanotechnologyMaterial resistanceSemiconductor materialsCarbonization
The invention provides a nano fiber coupling structure gas sensitive material and a preparation method and application thereof, the gas sensitive material is a one-dimensional coupled structure of carbon nanofibers and nano SnO2, and is based on the carbon nano fibers as a backbone, and a large number of SnO2 nano sheets are grown on the surface by deposition. Polymer nanofibers are obtained by electrostatic spinning, and the carbon nano fibers are prepared by pre oxidation and high temperature carbonization processes, the carbon nano fibers are used as the backbone, the SnO2 nano sheets are subsequently grown and deposited on the surface of the fibers by hydrothermal reaction to obtain a quasi one-dimensional coupled structure nano material, and the quasi one-dimensional coupled structure nano material is assembled into a gas sensor. The hydrogen sensing properties of semiconductor materials are improved, in addition to improvement of the sensitivity, the device operating temperature and response-recovery time are greatly improved, preparation process is simple, the method is convenient to operate and repeat, and the production equipment is simple and convenient, requirement on the production condition is low, production cost is low, and the nano fiber coupling structure gas sensitive material has wide market application prospect and is easy to popularize and use.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Frequency multiplier based on a low dimensional semiconductor structure
InactiveUS20160035837A1Simple structureEasy for implement of processOscillations generatorsSemiconductor devicesSemiconductor structureQuasi one dimensional
A frequency multiplier based on a low dimensional semiconductor structure, including an insulating substrate layer, a semiconductor conducting layer arranged on the surface of the insulating substrate layer, an insulating protective layer arranged on the surface of the semiconductor conducting layer, an insulating carving groove penetrating the semiconductor conducting layer, an inlet electrode arranged on the side surface of the semiconductor conducting layer, and an outlet electrode arranged on the side surface corresponding to the access electrode is provided. The semiconductor conducting layer comprises two two-dimensional, quasi-one-dimensional, or one-dimensional current carrying channels near to and parallel to each other. The frequency multiplier has advantages that the structure is simple, the process is easy to implement, no extra filter circuit needs to be added, dependence on material characteristics is little, and the selection range of materials is wide.
Owner:SOUTH CHINA NORMAL UNIVERSITY
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