43 results about "Electronic spin" patented technology

An n-NV-based gyroscope is provided that includes a diamond structure implanted with a plurality of NV centers, whose nuclear spins form a spin gyroscope. A number of radio-frequency (rf) coils and microwave (μw) co-planar waveguides are fabricated on the diamond structure to provide a sensitive and stable three-axis gyroscope in the solid state while achieving gyroscopic sensitivity by exploiting the coherence time of the 14N nuclear spin associated with the NV centers in the diamond structure combined with the efficient optical polarization and measurement of electronic spin.

A system comprising a solid state lattice containing an electronic spin coupled to a nuclear spin; an optical excitation configuration which is arranged to generate first optical radiation to excite the electronic spin to emit output optical radiation without decoupling the electronic and nuclear spins; wherein the optical excitation configuration is further arranged to generate second optical radiation of higher power than the first optical radiation to decouple the electronic spin from the nuclear spin thereby increasing coherence time of the nuclear spin; a first pulse source configured to generate radio frequency (RF) excitation pulse sequences to manipulate the nuclear spin and to dynamically decouple the nuclear spin from one or more spin impurities in the solid state lattice so as to further increase the coherence time of the nuclear spin; a second pulse source configured to generate microwave excitation pulse sequences to manipulate the electronic spin causing a change in intensity of the output optical radiation correlated with the electronic spin and with the nuclear spin via the coupling between the electronic spin and the nuclear spin; and a detector configured to detect the output optical radiation correlated with the electronic spin and the nuclear spin so as to detect a nuclear spin state of the nuclear spin.

A method for performing sub-nanometer three-dimensional magnetic resonance imaging of a sample under ambient conditions using a diamond having at least one shallowly planted nitrogen-vacancy (NV) center. A driving radio-frequency (RF) signal and a microwave signal are applied to provide independent control of the NV spin and the target dark spins. A magnetic-field gradient is applied to the sample with a scanning magnetic tip to provide a narrow spatial volume in which the target dark electronic spins are on resonance with the driving RF field. The sample is controllably scanned by moving the magnetic tip to systematically bring non-resonant target dark spins into resonance with RF signal. The dark spins are measured and mapped by detecting magnetic resonance of said nitrogen-vacancy center at each of said different magnetic tip positions. The dark-spin point-spread-function for imaging the dark spins is directly measured by the NV center.

The invention discloses a manufacturing system of pile coating wall cloth and a method thereof; the system sequentially comprises an unreeling device, a roller guide, a rotary screen gumming machine, an electronics spinning device, a baking oven, a wrap-up device, an unreeling position correcting device and a gumming position correcting device; wherein, the unreeling position correcting device is arranged between the unreeling device and the roller guide, and the gumming position correcting device is positioned between the rotary screen gumming machine and the electronics spinning device. The method comprises: towing force is applied on glass fiber base cloth which is inlaid with colored thread at one side to lead a wound roll of the glass fiber base cloth arranged on an unreeling frame to rotate correspondingly to the unreeling device for unreeling, and then the glass fiber base cloth sequentially passes through an unreeling color control patch sensor of the unreeling position correcting device, the roller guide, the rotary screen gumming machine, a gumming color control patch sensor of the gumming position correcting device, the electronics spinning device and the baking oven to obtain the pile coating wall cloth when moving towards the rear direction; after that, the unreeling operation is carried out on the glass fiber base cloth by the unreeling device. The pile coating wall cloth manufactured by the invention has clear and complete pattern and is in accordance with higher environmental protection requirements.

A novel carbon-modified titanium dioxide film (CMF-TiO2) and a method for producing same by a CVD method at atmospheric pressure. The precursor compounds used in this context for the titanium dioxide and the carbon component are titanium-organic compounds and unsaturated aromatic hydrocarbons. Thermal treatment at about 250° C. to about 600° C., preferable at about 250° C. to about 300° C. forms a CMF-TiO2, the carbon content of which is about 0.2% to about 10.0% by weight, preferably about 0.2% to about 6.0% by weight and particularly preferably about 0.2% to about 2.5% by weight. A CMF-TiO2 film is characterised by high catalytic activity in the degradation of air and water pollutants with visible light and light absorption in the range from 400 nm to 700 nm, as well as by 1) a quasi-Fermi level of the electrons of −0.5 V at pH 7 (relative to NHE) and / or by 2) C1s bonding energies of 284.8, 286.3 and 288.8 eV; and / or by 3) an isotropic electronic spin resonance (ESR) signal at a g-value of 1.900 to 2.005.

A novel method and apparatus for long distance quantum communication in realistic, lossy photonic channels is disclosed. The method uses single emitters of light as intermediate nodes in the channel. One electronic spin and one nuclear spin coupled via the contact hyperfine interaction in each emitter, provide quantum memory and enable active error purification. It is shown that the fixed, minimal physical resources associated with these two degrees of freedom suffice to correct arbitrary errors, making our protocol robust to all realistic sources of decoherence. The method is particularly well suited for implementation using recently-developed solid-state nano-photonic devices.

The disclosure concerns a magnetometer for detecting a magnetic field, comprising: a solid state electronic spin system containing a plurality of electronic spins and a solid carrier, wherein the electronic spins are configured to be capable of aligning with an external magnetic field in response to an alignment stimulus; and a detector configured to detect an alignment response of the electronic spins, such that the external magnetic field can be detected; wherein the electronic spins are provided as one or more groups, each group containing a plurality of spins, the plurality of spins in each of the one or more groups being arranged in a line that is angled at an angle Θ with respect to the local direction of the external magnetic field at the said group. Also disclosed is a method for detecting a magnetic field.

The present invention is in the field of spintronics, and relates to a highly efficient spin filter device, such as a spin-polarizer or a spin valve, and a method for fabrication thereof.

The invention discloses a continuous single-beam testing method for electronic spin useful life in a semiconductor. An experimental measuring light path showed in an attached drawing is formed by using a continuous single laser beam, a polarizing disk, a 1 / 2 wave plate, a 1 / 4 wave plate, a polarization beam splitter prism, an attenuating sheet, a balance light detector and a variable magnetic field. The continuous single laser beam not only excites electronic spin polarization in the semiconductor, but also testes the Faraday effect and the circular dichroism absorption effect of spin polarization induction. An experimental device is simple, and the manufacturing cost is low. A change curve of a Faraday corner or circular dichroism absorption along with magnetic field strength is tested experimentally, and the change curve is further fitted by using a developing theoretical model, so that the useful life of electronic spin can be obtained.

The invention provides a method for screening a superoxide anion scavenging agent by coupling ultrahigh-performance liquid chromatography with a mass spectrum. The method comprises the following steps of: analyzing the scavenging rate of a natural product extract or monomer on superoxide anions and detecting and quantifying the content of superoxide anions by detecting the change of 2-(4-iodbenzene)-3-(4-nitrobenzene)-5-(2,4-disulfobenzoic)-2H-tetrazole sodium salt serving as a trapping agent before and after reaction with superoxide anions. A method for coupling ultrahigh-performance liquid chromatography with the mass spectrum is applied to screening of the superoxide anion scavenging agent, so that the dosage of a sample is small, detection is quick and accurate and a relevant coefficient in a linear equation is up to 0.998; and the mass spectrum is used for detecting in specific to the mass-charge ratio of a compound, so that high accuracy and high specificity are achieved, false positive and false negative results in spectrometry screening are avoided, and the problem of difficulty in detecting caused by short service lives of the superoxide anions in an electronic spin resonance technology is solved. The method is used for screening the superoxide anion scavenging agent and detecting and quantifying the superoxide anions.

CPP-type giant magnetoresistance elements, magnetic components and magnetic devices can exhibit giant magnetoresistance effects through spin-related currents in the vertical direction of the film surface, wherein the CPP-type giant magnetoresistance elements (10, 20, 50) have antiferromagnetic layers (9), laminated structure of ferromagnetic fixed layer (11, 11A), non-magnetic conductive layer (12) and ferromagnetic free layer (13, 13A), the first magnetic layer of ferromagnetic free layer (13, 13A) (14, 14A) and the second magnetic layer (16, 16A) are magnetically antiparallel coupled through a magnetic coupler (15, 15A), and the magnetization (17, 17') of the first magnetic layer (14, 14A) is connected to the first magnetic layer (14, 14A). 2 Magnetizations (18, 18A) of the magnetic layers (16, 16A) are different in magnitude. Up-spinning electrons (5) and down-spinning electrons (6) are spin-dependently scattered according to the magnetization directions of the ferromagnetic pinned layer (11, 11A) and the ferromagnetic free layer (13, 13A), and the CPP-GMR passes through the conduction channel (1 , 2, 3, 4) and increase. In addition, in the CPP type giant magnetoresistance element (30) with ferromagnetic pinned layer (11), nonmagnetic conductive layer (12) and ferromagnetic free layer (13A), between ferromagnetic pinned layer (11) and nonmagnetic Between the conductive layers (12) and / or on the surface of the ferromagnetic free layer (13A), a layer (21) formed of one or not less than two of ruthenium, iridium, rhodium, rhenium, and chromium is provided.

Apparatus and method establish quantum oscillations at room temperature. A cavity has therein a resonator structure that includes a resonant element and a gain medium. A species of the gain medium has an electronic spin multiplicity capable of supporting a two-level spin system. An optical pump pumps the resonator structure and thereby generates microwave output power through stimulated emission of thermal photons. The species of the gain medium is of a sufficiently high concentration such as to have an ensemble spin-photon coupling rate which exceeds both the cavity mode decay rate and the spin-spin decoherence rate. The optical pump pumps the resonator structure using a short pulse of nanosecond duration, or a burst of approximately a millisecond in duration at relatively low instantaneous optical power, to excite said species of the gain medium into a spin-polarized two-level system that exhibits quantum oscillations in the microwave output power.

The invention discloses a method for rapidly detecting lipid oxidation in a refrigeration process of meat. The method comprises the following steps: 1, taking a refrigerated meat sample with a certain weight; 2, adding a POBN solution in the sample and then incubating; 3, adding a chloroform and methanol mixed solution and deionized water in a system of the step 2; 4, homogenizing a system of the step 3; 5, adding the chloroform and methanol mixed solution in a system of the step 4; 6, oscillating a system of the step 5; 7, centrifuging a system of the step 6; 8, separating a chloroform layer from the centrifuged system; 9, collecting a chloroform solution obtained by separation after the chloroform solution passes through a sodium sulfate column; 10, collecting the chloroform solution in the step 9 and carrying out rotary evaporation to remove chloroform; 11, collecting a sample obtained after rotary evaporation in the step 10, and placing the sample in a spin resonance detecting quartz tube; and 12, placing the quartz tube in an electronic spin resonator and detecting. The method has the advantages that each sample is low in detection time, and is convenient and rapid; and a detection result is accurate.

A method and apparatus for polarizing nuclear or electronic spins is disclosed. An analyte is passed near a surface that has a plurality of spin defect centers implanted within 10 nm of the surface. The spin defect centers are exposed to a magnetic field and illumination to produce polarized spins. The polarized spins then induce spin polarization in the analyte.

The invention relates to a bushing for preparing electronic spun yarns, which is characterized in that a base plate adopts a novel discharge spout distribution scheme, thereby ensuring that the quality of products is not reduced and greatly improving the production efficiency. In the invention, the bottom of the bushing is divided into 12 regions which are identical in the aspects of size, shape and distribution mode, wherein a rounded parallelogram composed of 100 uniformly distributed discharge spouts (i.e. a parallelogram composed of discharge spouts in 9 columns and 12 rows excluding 8 discharge spouts at 4 corners) is formed in each region. Compared with the 13-column and 16-row discharge spout rounded matrix of a 800-nozzle bushing, the novel bushing provided by the invention is more symmetrical, so that glass fibers can be distributed more uniformly in the subsequent process, thereby ensuring the product quality and improving the product yield. The invention also correspondingly improves the subsequent production process of the bushing.

The invention discloses a manufacturing system of pile coating wall cloth and a method thereof; the system sequentially comprises an unreeling device, a roller guide, a rotary screen gumming machine, an electronics spinning device, a baking oven, a wrap-up device, an unreeling position correcting device and a gumming position correcting device; wherein, the unreeling position correcting device isarranged between the unreeling device and the roller guide, and the gumming position correcting device is positioned between the rotary screen gumming machine and the electronics spinning device. Themethod comprises: towing force is applied on glass fiber base cloth which is inlaid with colored thread at one side to lead a wound roll of the glass fiber base cloth arranged on an unreeling frame to rotate correspondingly to the unreeling device for unreeling, and then the glass fiber base cloth sequentially passes through an unreeling color control patch sensor of the unreeling position correcting device, the roller guide, the rotary screen gumming machine, a gumming color control patch sensor of the gumming position correcting device, the electronics spinning device and the baking oven toobtain the pile coating wall cloth when moving towards the rear direction; after that, the unreeling operation is carried out on the glass fiber base cloth by the unreeling device. The pile coating wall cloth manufactured by the invention has clear and complete pattern and is in accordance with higher environmental protection requirements.

An n-NV-based gyroscope is provided that includes a diamond structure implanted with a plurality of NV centers, whose nuclear spins form a spin gyroscope. A number of radio-frequency (rf) coils and microwave (μw) co-planar waveguides are fabricated on the diamond structure to provide a sensitive and stable three-axis gyroscope in the solid state while achieving gyroscopic sensitivity by exploiting the coherence time of the 14N nuclear spin associated with the NV centers in the diamond structure combined with the efficient optical polarization and measurement of electronic spin.

Apparatus and method establish quantum oscillations at room temperature. A cavity has therein a resonator structure that includes a resonant element and a gain medium. A species of the gain medium has an electronic spin multiplicity capable of supporting a two-level spin system. An optical pump pumps the resonator structure and thereby generates microwave output power through stimulated emission of thermal photons. The species of the gain medium is of a sufficiently high concentration such as to have an ensemble spin-photon coupling rate which exceeds both the cavity mode decay rate and the spin-spin decoherence rate. The optical pump pumps the resonator structure using a short pulse of nanosecond duration, or a burst of approximately a millisecond in duration at relatively low instantaneous optical power, to excite said species of the gain medium into a spin-polarized two-level system that exhibits quantum oscillations in the microwave output power.

The invention discloses an information electronic storage unit and / or an electronic spin generator, and belongs to the field of information storage and generators. According to the scheme, the methodcomprises the following steps that: on one of the surfaces of the electron spin state silicon substrate memory, there is an electron, an electronic spin state operation and / or information reader, a word drive line, two triodes and / or two MOS FET and or two giant magnetoresistances, and or alternatively an electronic receiver, and on the other surface of the electron spin state silicon substrate memory, there is a ferromagnetic substance layer. According to the technology, the main storage chip can have the advantages of being high in information access speed, large in unit area information capacity, low in energy consumption and small in heat productivity; Two binding posts of the electronic state operation and / or information reading machine are respectively the positive electrode and thenegative electrode of the electronic spin generator, and the electronic spin generator can be formed by the two binding posts and electrons and is used for an information storage device used for a plurality of types of electronic equipment and / or used for a power supply used for the plurality of types of electronic equipment.

A method for performing sub-nanometer three-dimensional magnetic resonance imaging of a sample under ambient conditions using a diamond having at least one shallowly planted nitrogen-vacancy (NV) center. A driving radio-frequency (RF) signal and a microwave signal are applied to provide independent control of the NV spin and the target dark spins. A magnetic-field gradient is applied to the sample with a scanning magnetic tip to provide a narrow spatial volume in which the target dark electronic spins are on resonance with the driving RF field. The sample is controllably scanned by moving the magnetic tip to systematically bring non-resonant target dark spins into resonance with RF signal. The dark spins are measured and mapped by detecting magnetic resonance of said nitrogen-vacancy center at each of said different magnetic tip positions. The dark-spin point-spread-function for imaging the dark spins is directly measured by the NV center.

A method of diagnosing a conducting structure includes providing the conducting structure in a magnetic field, immersing the conducting structure in a detection medium, or placing a detection medium in the vicinity of the conducting structure, exciting nuclear or electronic spins within the detection medium using a broad-band excitation pulse, receiving an NMR or ESR spectrum from the detection medium, obtaining a frequency distribution of the detection medium, and indirectly measuring internal characteristics of the conducting structure by characterizing frequency changes in the frequency distribution. Conducting structures are analyzed on the basis of changes in magnetic susceptibilities and internal electric current distributions, which may change over the course of a charging / discharging cycle, and a result of degradation and failure of the conducting structure. The conducting structure may be, for example, a battery, a capacitor, a supercapacitor, a fuel cell, or a catalyst material.

The embodiment of the invention discloses a nano composite material, a preparation method and use method thereof, and a device. The nano composite material is characterized by comprising a first nano particle and a second nano particle which are combined; the first nano-particles are transition metal nano-particles, and the second nano-particles are one or a combination of the following materials: lithium nitride nano-particles, lithium oxide nano-particles, lithium phosphide nano-particles, lithium selenide nano-particles and lithium sulfide nano-particles. The nano composite material can be subjected to magnetic regulation and control under low voltage, and high-speed and high-density electronic spin information storage is realized.

The invention relates to a treatment for printing a surface with an ink that includes a compound that exhibits a change of electronic spin state as a function of temperature, imparting optical properties such that the ink is visible in a temperature range that includes an ambient temperature of around 20° C. and is transparent in the visible spectrum when the ink is brought to a temperature above said range and then brought back down to a temperature within the range.

The invention provides an image type electronic spinning analyzer. The image type electronic spinning analyzer comprises an electronic optical system, a scattering target and a two-dimensional image type electronic detector; the electronic optical system comprises a nonaxisymmetrical lens group and a magnetic field, the nonaxisymmetrical lens group is matched with the magnetic field to separate the movement track of incident electrons from the movement track of outgoing electrons so as to increase the degree of freedom of geometric configuration of various components of the spinning analyzer,the incident electrons deflect and are imaged to a specific plane which corresponds to a reflecting target, electrons which are scattered by the scattering target are imaged on the two-dimensional image type electronic detector to form two-dimensional electron strength images, and therefore, spinning multichannel measurement of the electrons is realized; and by introduction of nonaxisymmetrical lenses, asymmetry of the optical property of the electrons of the magnetic field in directions which are perpendicular and parallel to the magnetic field can be compensated, aberration of the optical system is relieved, and debugging of the electronic optical system is simple.

The invention discloses a terahertz detector based on an antiferromagnetic nonmagnetic metal heterojunction, which belongs to the field of photoelectric detection technology. Hertz radiation energy is converted into spin waves, and the inverse spin Hall effect in non-magnetic metals with strong spin-orbit coupling is used to convert spin waves into charge flow at the interface, which is read out by electrodes on both sides of the non-magnetic metal surface Voltage signal, so as to realize the detection of terahertz radiation. The invention utilizes electron spin properties to realize terahertz detection. It is a spin terahertz detector with the advantages of zero power consumption, fast response, easy integration, and room temperature operation.

A zinc oxide group nanometer semiconductor electronic spin material and a synthesizing method thereof, relate to a nanometer semiconductor electronic spin material field. The material has a chemical formula of Zn1-xCoxO:Ag (x is 0-0.1), and is synthesized by a solvent heating method. Addition of an elementary Ag in the invention effectively converts Zn1-xCoxO from paramagnetism to ferromagnetism, a high temperature coercive force is obvious larger than the coercive force of a low temperature 2K, the invention expresses an excellent high temperature ferromagnetism.