34 results about "Superconductivity" patented technology

To study a system that transmutes atomic nuclei using muons, devise a light source device and a propulsion device including a nuclear transmutation system, and examine a centrifugal force application unit which may be accelerated by the propulsion device, and devise an electric field generator or a magnetic field generator.SOLUTION: A system is devised that decelerates cosmic muons produced from cosmic rays or high-speed muons derived from mesons produced from atomic collisions with electric field and deceleration means and uses the muons for nuclear transmutation. Also, a decelerator using a laser wake field and a decelerator using an element forming an electric field are proposed. A radiation light source having the nuclear transmutation unit is disclosed. An ionization device, a centrifugal gun device, a centrifugal force and pressure applying device, a pressure generation unit, a pressure applying material, a high-pressure induction superconductivity experimenting system, a magnetic device, and a magnetic sail are disclosed.SELECTED DRAWING: Figure 18

The invention discloses a quaternary ferrocolumbium cobalt sulfide crystal, a preparation method and application, and belongs to the technical field of magnetic materials, the quaternary ferrocolumbium cobalt sulfide crystal has remarkable in-plane and out-of-plane magnetic anisotropy, and the chemical general formula of the quaternary ferrocolumbium cobalt sulfide crystal is Nb3 (Fe, Co) S6; the preparation method comprises the following steps: (1) preparing and packaging raw materials; (2) vacuum packaging; (3) carrying out CVT reaction; and (4) cooling and sampling. An improved double-temperature-zone chemical vapor transport (CVT) method is adopted, and a proper transport agent is selected, so that a multi-component raw material can be transported and recrystallized in a gaseous form at a relatively low temperature, and a single crystal with uniform components and a complete structure is obtained. The material can be applied to spintronics devices, high-density magnetic storage units and magnetic sensors; and a new platform is provided for researching complex magnetic interaction, magnetic anisotropy sources, potential superconductivity, topological properties and the like.

The application discloses a high-temperature superconducting conductor and a preparation method thereof, and relates to the technical field of high-temperature superconductivity, wherein the conductor comprises an inner pipe body and an outer pipe body arranged coaxially, a liquid nitrogen convection cooling zone is formed in the inner pipe body, and a vacuum heat insulation cavity is formed between the inner pipe body and the outer pipe body. By forming the liquid nitrogen convection cooling zone in the inner pipe body and the vacuum heat insulation cavity between the inner pipe body and the outer pipe body, the liquid nitrogen can directly soak the superconducting cable for efficient heat exchange, the vacuum heat insulation cavity effectively blocks the radial conduction of environmental heat to the inner pipe body, and the heat load of the refrigeration system is greatly reduced; by electrically connecting the low-temperature end electrode and the superconducting cable and connecting the room-temperature end electrode and the low-temperature end electrode in series to form a loop, the room-temperature end electrode is avoided from directly contacting the superconducting cable, the axial heat leakage along the electrode is reduced, and one end of the liquid nitrogen cooling pipe is communicated with the inner pipe body and the other end of the liquid nitrogen cooling pipe extends to the outside through the outer pipe body, so that the stable supply and the sealing reliability of the liquid nitrogen are ensured.

The application provides a quench protection circuit, which is suitable for quench protection of a superconducting device. The quench protection circuit comprises: a diode branch, which is connected in parallel with a superconducting coil branch in the superconducting device, and comprises a plurality of forward diodes and at least one reverse diode; the plurality of forward diodes are connected in series and connected in parallel with the reverse diode; and the sum of voltage drops of the forward diodes is greater than or equal to an operating voltage between the superconducting coil branch; and a release branch, which is connected in parallel with the diode branch and the superconducting coil branch. The quench protection circuit can protect both insulated superconducting coils and uninsulated superconducting coils, and can be suitable for quench protection of different types of superconducting coils.

The present invention relates to a coil for a high temperature superconductor (HTS) magnet and, more particularly, to a coil for an HTS magnet for maintaining superconductivity, and a manufacturing method therefor. To this end, the coil for an HTS magnet for maintaining superconductivity is provided, the coil (50) for an HTS magnet being manufactured by winding an HTS wire rod (10) on a rotating bobbin (30), and comprising: a metal conductor (100) for covering, between an inner circumferential surface (70) and an outer circumferential surface (80) of the coil (50), a winding plane (60) of the coil (50); and a joining means for electrically connecting the metal conductor and the coil.

The invention discloses a vacuum heat pipe array and phase change energy storage coupled efficient heating system, and relates to the technical field of energy-saving heating, the vacuum heat pipe array and phase change energy storage coupled efficient heating system comprises a vacuum heat pipe array, a thermal switch cavity, a phase change energy storage unit and a control system, the condensation end of the vacuum heat pipe array is integrated on an upper cover plate of the thermal switch cavity, and the phase change energy storage unit is tightly attached to the lower surface of the cavity; the control system is connected with the thermal switch chamber; wherein the thermal switch chamber comprises a copper or aluminum alloy flat sealing cavity, gallium indium alloy particles or bismuth indium tin alloy particles and an electromagnetic coil, and can realize three modes of superconducting, modulation and turn-off by controlling the state of the alloy particles through a magnetic field under the instruction of a control system; the control system monitors the temperature of the heat pipe, the energy storage unit and the indoor temperature through a temperature sensor and generates an instruction, the system can further control a heating tail end circulating pump to release energy storage heat, the heat flow regulation and control and energy storage cooperation problem is efficiently solved, and the heating energy efficiency is improved.

The invention belongs to the related technical field of superconducting, and discloses an annular superconducting armature winding topological structure and a superconducting motor. The armature winding is a high-temperature superconducting coil, and the high-temperature superconducting coil is embedded into each stator groove in an annular winding structure. Compared with a conventional fractional slot concentrated winding, more winding phase distribution and slot potential distribution can be provided for the superconducting motor, and more design freedom degrees are achieved; the influence of the direction of a magnetic field acting on a winding strip on the performance reduction of the strip can be greatly reduced, and the performance bottleneck caused by high harmonic loss and low slot fullness rate of a traditional concentrated / distributed winding is greatly reduced; the technical problems of alternating current loss accumulation, poor superconducting state stability and insufficient mechanical reliability of the superconducting armature winding in the MW-level aviation motor are effectively solved.

An embodiment of a method for qubit tuning includes generating a first magnetic field through a portion of a first layer, the first layer including a material that exhibits superconductivity in a cryogenic temperature range, the portion of the first layer being above a critical temperature. In an embodiment, the method includes cooling the portion of the first layer to at least the critical temperature. In an embodiment, the method includes generating a second magnetic field in response to cooling the portion of the first layer to at least the critical temperature, the second magnetic field magnetically interacting with a qubit of a quantum processor chip such that a first magnetic flux of the first layer causes a first change in a first resonant frequency of the qubit by a first frequency shift value.

A method for restoring superconductivity of a wire having a core of reacted MgB2 comprises subjecting said wire to a two-phase heat treatment, wherein a first phase comprises heating in a range of 800° C. to 1000° C. during 20 minutes to 40 minutes and a second phase comprises heating in a range of 550° C. to 750° C. during 45 minutes to 75 minutes.

This invention discloses a modular pulse-magnetized double-sided high-temperature superconducting linear synchronous motor. The motor uses high-temperature superconducting bulk material as the excitation magnet for the mover and utilizes a pulse magnetization device integrated into the magnetization section of the linear motor to achieve in-situ high remanence magnetization of the mover. The system consists of a pulse power supply system, a modular superconducting mover system, and a double-sided stator system. The pulse power supply system uses a large-capacity capacitor bank and, in conjunction with the split magnet coils in the motor's magnetization section, generates a millisecond-level strong pulsed magnetic field to achieve rapid high remanence magnetization of the high-temperature superconducting bulk material. The modular superconducting mover maintains the required low temperature for superconductivity through a Dewar structure, and the number of superconducting mover modules can be increased or decreased as needed to meet different thrust requirements. Simultaneously, the impact of local quenching is limited to a single module, preventing quenching from affecting other movers and improving system reliability. The double-sided stator structure reduces normal electromagnetic force, improves high-speed operation stability, and fully utilizes the double-sided high magnetic field advantage of the high-temperature superconducting mover to enhance the motor's thrust performance. This structure achieves a high degree of integration between the magnetization device and the motor stator, significantly improving the power density, operational stability, and maintenance convenience of the linear motor. It is suitable for applications with high requirements for the thrust performance and reliability of linear motors, such as electromagnetic launch and ultra-high-speed rail transit.

This invention provides a method for fabricating patterned ultrathin YBCO devices with zero material removal, belonging to the field of single-photon detection technology. This method utilizes hydrogen plasma to selectively modify the exposed YBCO thin film within a specific process window, thereby suppressing its superconductivity, while the photoresist-covered area retains its original high-temperature superconductivity. This achieves high-precision "zero-material-removal" patterning at the sub-micron and even nanometer scales without removing any material.

One embodiment of a qubit tuning device includes a first layer configured to generate a magnetic field, the first layer comprising a material exhibiting superconductivity in a low-temperature range. In one embodiment, the qubit tuning device includes qubits of a quantum processor chip, wherein the first layer is configured to magnetically interact with the qubits such that a first magnetic flux of the first layer causes a first change in the first resonant frequency of the qubits via a first frequency shift value.

The invention discloses a preparation method of a Ca / SrxY1-xB6 metal hexaboride alloy, a boron thermal reduction method is adopted, CaO or SrO, Y2O3 and B are used as precursors, CaB6 or SrB6 and YB6 are subjected to solid solution to synthesize the Ca / SrxY1-xB6 or SrxY1-xB6 metal hexaboride alloy, the method is simple and convenient, and by adjusting the proportion of B powder, other by-products (YB / YB12 / B6O) insoluble in acid are avoided, so that sample screening is more convenient. The Ca < x > Y < 1-x > B6 and the Sr < x > Y < 1-x > B6 synthesized by the method disclosed by the invention have relatively high hardness and superconductivity.

Materials are disclosed that superconduct at high temperatures and low pressures. Methods of making and measuring the materials are also disclosed. In a particular embodiment, a nitrogen-doped (or other lightweight-atom doped) rare earth metal hydride is disclosed. Also disclosed are thermodynamic pathways to recovering materials that superconduct at room temperature and room pressure and / or at other desirable operating temperatures and pressures to enable superconductivity at conditions that make a wider range of superconductive applications practical. These and other aspects of various embodiments are disclosed herein.

The present invention discloses a method for fabricating a device for regulating the speed of an SNSPD on a chip. The device includes a nanowire in the electrode lead region and a nanowire in the photo-responsive region, and the two are connected in series. The superconducting nanowire single-photon detector structure proposed in this paper changes the width of the nanowire in the electrode lead region to be smaller than the width of the nanowire in the photo-responsive region. Thus, when the nanowire in the photo-responsive region normally responds to photons, the nanowire in the electrode lead region quenches superconductivity to form an on-chip series resistance, and further, the recovery speed of the superconducting nanowire single-photon detector after responding to a photon can be regulated.

The utility model relates to the technical field of light path structures, and discloses a light path structure applied to low temperature superconduction, which comprises an upper cover and a lower cover, the top of the lower cover is fixedly connected with LED radiator double fins, one side of the LED radiator double fins is fixedly connected with an LED lamp panel, one side of the LED lamp panel is provided with a light hopper, and the other side of the light hopper is provided with a light source. The top of the lower cover is fixedly connected with an inner circulation fan, the top of the lower cover is fixedly connected with a radiator fan A and a radiator fan B, the top of the upper cover is provided with an inner circulation sealing cover, and the side, away from the LED radiator double fins, of the radiator fan B is fixedly connected with an inner circulation U-shaped radiator A. According to the utility model, through cooperation of the internal circulation U-shaped radiator A, the radiator fan A, the radiator fan B, the internal circulation fan and other structures, internal heat dissipation circulation is established, an air channel is reasonably optimized, the heat dissipation efficiency is improved, and the practicability of the structure is reasonably and effectively improved.

Described are various embodiments of a quantum device and method operating the same. In one embodiment, the quantum device comprises a substrate; a superconducting circuit element supported on a substrate surface of said substrate, the superconducting circuit element exhibiting superconductivity during operation of the quantum device; and a passive magnetic element, the passive magnetic element generating a magnetic field, the superconducting circuit element being directly or indirectly exposed to at least a portion of the magnetic field during operation of the quantum device. In some embodiments, the superconducting circuit element is indirectly exposed to the portion of the magnetic field, the portion of the magnetic field being guided, at least in part, from a first location proximate the passive magnetic element to a second location proximate the superconducting circuit element by one or more magnetic field guides.

The invention discloses suspension model equipment for motion of a planet around the sun, and relates to the field of teaching model equipment. A magnetic field is formed through an orbit, so that a planetary model is suspended on the orbit according to the principle that a superconductor suspends in the magnetic field. Moreover, a metal sheet is arranged in the planet model, the interior of the metal sheet is arranged to be of a hollow structure, and the metal sheet is filled with liquid nitrogen, so that the metal sheet becomes a superconductor under the low-temperature condition, the planet model can be effectively prevented from rotating, and the motion of the planet around the sun can be displayed in a three-dimensional visualization mode. Therefore, the motion state and period between the sun and the planet can be well reflected.

The present invention relates to a method for producing an electrically conductive conductor strand (1) comprising at least one carbon conductor (3), comprising the steps of: producing or providing a conductor strand (1) as an intermediate product comprising at least one carbon conductor (3), which in particular comprises graphite, pyrolytic graphite, graphene, graphine and / or carbon nanotubes, introducing the conductor strand (1) and a plurality of intercalation substances (2), in particular a plurality of different metal chlorides, into a gas phase of a reactor volume (5), wherein the intercalation substances (2) are suitable for intercalation into the material of the at least one carbon conductor (3) of the conductor strand (1), carrying out a heat treatment of the conductor strand (1), in which the reactor volume (5) is brought to a process temperature to initiate an intercalation (100),in which atoms or molecules of the intercalation substances (2) are incorporated in the material of the respective carbon conductor (3), in particular are deposited on a carbon structural form of the carbon conductor (3), in particular in an intermediate region (4) between the layers of a multi-layer carbon structural form, treating the conductor strand (1) after the heat treatment of step c) with an oxidizing agent, in particular alcohol, to oxidize the intercalation substances (2) intercalated into the conductor strand (1), and treating the conductor strand (1) with hydrogen below a predefined reaction temperature to reduce the oxygen content of the oxidized intercalation substances (2), in particular to achieve superconductivity.

The invention provides a preparation method of a superconducting oxide thin film, the superconducting oxide thin film and application. The preparation method provided by the invention comprises the following steps: in vacuum radio frequency magnetron sputtering thin film deposition equipment, taking an ITO ceramic target material as a sputtering target material; mixed working gas of argon and oxygen is introduced into the deposition cavity, the oxygen partial pressure of the mixed working gas is adjusted to be not higher than 4%, and the total pressure intensity of the deposition cavity is controlled to be 0.1-1.5 Pa; controlling the temperature of the substrate to be 50-300 DEG C; the deposition rate of the film is controlled to be 0.1-1.5 nm / s, and the ITO oxide film with the thickness of 5-500 nm is formed through deposition. The preparation method of the superconducting oxide film, the superconducting oxide film and the application provided by the invention are used for realizing controllable preparation of an ITO oxide film with high transmittance of a communication band and superconductivity at a low temperature, and providing process support for verifying optical characteristics of the ITO oxide film in a superconducting state and realizing dual performances of high transmittance and superconductivity in the superconducting state.

A helical resonator (140) for amplifying an AC voltage for driving an ion trap comprises: a coil (144) having, as a base material, a non-superconducting metal (for example, Cu) that does not exhibit superconductivity at a predetermined cryogenic temperature; and a shield (146) surrounding the coil (144) and having, as a base material, a non-superconducting metal that is the same as or different from that of the coil (144). A plating layer is provided on at least one of the surface of the base material of the coil (144) and the surface of the base material of the shield (146), the plating layer being plated with a superconductor (for example, Pb) exhibiting superconductivity at a predetermined cryogenic temperature. The base materials of the coil (144) and the shield (146) have a higher thermal conductivity than the superconductor.

A spliced high-temperature superconducting magnetic shielding device and a combined device, which at least solve the problem of self-generated magnetic noise that cannot be solved by a magnetic shielding device made of soft magnetic materials. After combining with the spliced superconducting magnetic shielding, the residual magnetism or magnetic noise can be reduced by at least 1-3 orders of magnitude. It is characterized in that it includes a spliced magnetic shielding barrel formed by splicing and enclosing several blocks. The blocks are superconducting blocks sintered from high-temperature superconducting powder. Superconducting powder is filled in the splicing seams between adjacent blocks, and the splicing seams between adjacent blocks are sealed with superconducting tape. High-temperature superconductivity means that the liquid nitrogen temperature at which the superconducting phenomenon occurs is ≥77K.

A lithographic apparatus including: a patterning device; a first positioner to position the patterning device support; a substrate support; a second positioner to position the substrate support; and a projection system configured to project a radiation beam from a patterning device onto a substrate, wherein the patterning device support, the first positioner, the substrate support, and / or the second positioner has, during use, a plurality of superconductive coils that are configured to generate a magnetic field, wherein the plurality of superconductive coils are grouped in a plurality of separable and discrete modules which, when assembled, form the assembly, each module including a subset of one or more coils of the plurality of coils and including an electrical interface to provide electricity to the subset of one or more coils and a cooling interface to provide cooling for the superconductivity of the subset of one or more coils.

The invention discloses a method for inducing the superconductivity of a perovskite type iridium oxide epitaxial thin film, which comprises the following steps: growing an iridium oxide epitaxial thin film on a substrate by using a pulse laser method, the general formula of the material of the iridium oxide thin film being Srn + 1IrnO3n + 1 (n = 1, 2, and infinity); and carrying out He ion implantation on the prepared iridium oxide film. And testing the electrical transport characteristic and the magnetic characteristic of the injected sample, and judging that the ion injected sample has the superconducting characteristic according to the test result that the resistance of the electrical transport characteristic is suddenly reduced at low temperature and the magnetic characteristic shows diamagnetism within the same low temperature range. The iridium oxide epitaxial thin film is prepared through a pulse laser method, the helium ion implantation technology is combined, the electronic structure is regulated and controlled, and the superconducting characteristic is successfully induced. According to the method, potential safety hazards of a traditional chemical reduction method are abandoned, the technological process is simplified, and technical support is provided for industrial application of the oxide superconducting thin film.

According to an aspect, there is provided a Coulomb blockade thermometer comprising an input electrode; an output electrode; and a sensor component coupled in-between the input and output electrodes. The sensor component comprises: an array of tunnel junctions comprising at least one row of tunnel junctions and first and second heat sinks. The tunnel junctions of the array comprise an insulating layer forming a tunnel barrier between two electrically conducting volumes which are characterized by an absence of superconductivity. The absence of superconductivity is achieved by using titanium tungsten layers or scandium layers. The at least one row comprises first, second and third tunnel junctions. The first heat sink is coupled to the first and second tunnel junctions. The second heat sink is coupled to the second and third tunnel junctions. The first and the second heat sinks are arranged to provide heat dissipation via electron-phonon coupling.

The invention discloses a preparation method and application of a carbon electrode material, and the preparation method comprises the following steps: preparing polyfurfural resin, preparing polyfurfural resin gel, pouring the polyfurfural resin gel into a mold, slowly heating to 160 DEG C, baking to remove excess water, demolding to obtain a precursor, and drying to obtain the carbon electrode material. The precursor is subjected to the steps of carbonization, activation, plasma enhanced reduction, plasma nitrogen doping and the like to prepare a carbon electrode; the prepared carbon electrode has the common characteristics of a carbon material, has high heat resistance, high temperature resistance, low density, superconductivity, high corrosion resistance and high thermal conductivity, and can be subjected to mirror polishing; the prepared carbon electrode material has high strength and hardness, and can be used for manufacturing electrolytic electrode materials, in the plasma doping process of a carbon electrode, nitrogen atoms replace carbon atoms in an original carbonized precursor to form different N forms, and the electro-catalytic performance of the carbon electrode material is improved.

A lithographic apparatus includes: a patterning device; a first positioner for positioning the patterning device support member; a substrate support; the second positioner is used for positioning the substrate supporting piece; and a projection system configured to project a radiation beam from the patterning device onto the substrate wherein the patterning device support, the first locator, the substrate support and / or the second locator have, during use, a plurality of superconducting coils configured to generate a magnetic field, the plurality of superconducting coils are grouped into a plurality of separable and discrete modules, and the plurality of modules form an assembly when assembled; each module includes a subset of one or more coils of the plurality of coils and includes an electrical interface for providing power to the subset of one or more coils and a cooling interface for providing cooling for the superconductivity of the subset of one or more coils.

An embodiment of a method for qubit tuning includes generating a first magnetic field through a portion of a first layer, the first layer comprising a material exhibiting superconductivity in a cryogenic temperature range, the portion of the first layer above a critical temperature. In an embodiment, the method includes cooling the portion of the first layer at least to the critical temperature. In an embodiment, the method includes generating, in response to cooling the portion of the first layer at least to the critical temperature, a second magnetic field to magnetically interact with a qubit of a quantum processor chip such that a first magnetic flux of the first layer causes a first change in a first resonance frequency of the qubit by a first frequency shift value.

The application discloses a preparation method of a niobium-based Josephson junction and belongs to the technical field of low-temperature superconductivity. x The preparation method mainly comprises the following processes: cleaning a substrate; defining a bottom electrode area through photolithography; preparing an Nb bottom electrode; peeling; preparing an Al-AlO x -Al barrier layer; growing an Nb top layer electrode; defining a junction area and a top electrode area through secondary photolithography; performing reactive ion etching and ion beam etching; and removing glue. The niobium-based Josephson junction is prepared through micro-processing technology, vacuum coating technology and etching technology, so that the process is simplified; the niobium-based Josephson junction is prepared through a process of twice photolithography, so that the possibility of interface degradation of the device in the preparation process is reduced, the process of preparing the niobium-based Josephson junction is simplified, complex processing procedures are avoided, and the mass production and application of the Josephson junction are facilitated.

This transition-metal nitride is a nitride of a transition metal belonging to the fifth or sixth period, the nitride containing a rare-earth element. This transition-metal nitride exhibits superconductivity. For example, the transition metal can be rhenium (Re) and the rare-earth element can be praseodymium (Pr). The method for producing this transition-metal nitride comprises growing a nitride of a transition metal belonging to the fifth or sixth period on a substrate by molecular beam epitaxy while adding a rare-earth element.