43 results about "Electronic spin" patented technology

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 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 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.

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 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 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.