20 results about "Spin relaxation time" patented technology

According to one embodiment, a polishing pad includes a polishing layer comprising a urethane-based prepolymer and a curing agent, wherein the spin-lattice relaxation time (T1) and spin-spin relaxation time (T2) measured using TD-NMR for the polishing layer satisfy Equations 1 and 2, respectively, and thus can improve the performance of the polishing pad.

To provide a polyaspartic acid derivative that does not feel sticky when applied to the skin and has an excellent texture that crumbles on the skin. [Solution] A polyaspartic acid derivative characterized in that the spin-spin relaxation time (T2) obtained by solid echo method in pulsed NMR analysis at 40°C of a 1.0 wt% aqueous solution of the polyaspartic acid derivative is 1400 milliseconds to 2400 milliseconds.

An electrophotographic cleaning blade comprising an elastic member comprising a polyurethane and a support member that supports the elastic member, wherein, a storage elastic modulus of the elastic member at a vibration frequency of 1×10−3 Hz is 12.0 to 18.0 MPa, in pulse NMR measurement in an environment at 50° C. of a sample sampled from the elastic member, there is a segment with a spin-spin relaxation time (T2L) of 250 to 360 μs, the polyurethane comprises a polyurethane elastomer comprising a polysiloxane segment having a specific structure, and the polysiloxane segment is bonded to a polyurethane skeleton in the polyurethane elastomer.

The objective of the present invention is to provide a polishing pad having excellent startup properties, and a method for manufacturing the same. The polishing pad includes a resin sheet having a plurality of teardrop-shaped bubbles and having a polishing surface for polishing an object to be polished, wherein, if a free induction decay signal (FID) obtained by means of pulsed NMR is subjected to waveform separation by using the least squares method to sequentially subtract components having the longer spin-spin relaxation time T2s from the free induction decay signal (FID), to thereby divide the free induction decay signal (FID) into three components, namely an amorphous phase, an interface phase and a crystal phase in decreasing order of the spin-spin relaxation time T2s, the resin sheet has a difference ΔT2s,15min of 0.35 ms or more, being the difference between the relaxation time T2s,15min of the amorphous phase component of the resin sheet obtained from the measurement result of the relaxation time using pulsed NMR after dressing the polishing pad for 15 minutes, and the relaxation time T2s,dry of the amorphous phase component of the resin sheet obtained from the measurement result of the relaxation time using pulsed NMR in a dry state before dressing the polishing pad.

The invention relates to the technical field of tobacco leaf detection, in particular to a tobacco leaf oil content quantitative characterization method. The method comprises the following steps: measuring state information of protons in a tobacco leaf sample by using low-field nuclear magnetic resonance to obtain a spin-spin relaxation time T2 spectrum and a spin-lattice relaxation time T1 spectrum, and generating a T1-T2 two-dimensional spectrogram; determining peak positions of low-activity protons and medium-activity protons in the T1-T2 two-dimensional spectrogram to obtain T2 values of the low-activity protons and the medium-activity protons, and solving an average T2 value of the low-activity protons and the medium-activity protons of the plurality of groups of tobacco leaf samples; on the spin-spin relaxation time T2 spectrum of the tobacco leaf sample to be detected, the low-activity proton peak intensity and the medium-activity proton peak intensity of the tobacco leaf sample to be detected at the average T2 value are obtained, and the ratio of the low-activity proton peak intensity to the medium-activity proton peak intensity serves as the oil content quantitative value of the tobacco leaf sample to be detected. According to the method, nondestructive testing of the tobacco leaf raw material oil content is realized by utilizing a low-field nuclear magnetic technology, and quantitative characterization of the tobacco leaf raw material oil content is realized by combining the T1-T2 two-dimensional spectrogram.

To provide a superlattice structure having a sufficient spin relaxation time, an electron spin-controlled semiconductor laser, and a method of manufacturing a superlattice structure.SOLUTION: A superlattice structure has a laminate including a plurality of barrier layers and a plurality of well layers, and the plurality of barrier layers and the plurality of well layers each include a III-V compound semiconductor with a zincblende structure. In the laminate, the barrier layers and the well layers are laminated alternately in the <110> direction. A spin relaxation time of electrons in the laminate is based on the number of periods of the lamination of the barrier layers and the well layers, the number of periods of the lamination of the barrier layers and the well layers in the laminate being 2 or more and 50 or less. The thickness of each of the plurality of barrier layers is 0.2 nm or more and 6 nm or less, and the spin relaxation time is 0.1 ns or more and 10 ns or less.SELECTED DRAWING: Figure 1

The embodiment of the invention provides a CO2 throughput test method and device, a storage medium and electronic equipment, and the method comprises the following steps: executing an acquisition step: adjusting the temperature of a temperature box to an Nth temperature value; the high-pressure piston pump is controlled to inject the carbon dioxide gas with the Nth temperature value into the Nth rock core at the Nth pressure value, so that the Nth rock core is subjected to huff and puff; under the condition that huff and puff of the Nth rock core is completed based on the carbon dioxide gas, a first spin-spin relaxation time spectrum, collected by the nuclear magnetic resonance scanning device, of the Nth rock core is obtained, a container containing the carbon dioxide gas is loaded in the temperature box, and crude oil is injected into the Nth rock core; circularly executing the obtaining step until a first spin-spin relaxation time spectrum of the Mth rock core is obtained; and according to the first spin-spin relaxation time spectrums of the M rock cores, determining first change information of crude oil utilization characteristics of pores with different apertures in the rock cores in different environments.

To provide a polishing pad excellent in starting performance and a method for manufacturing the same.SOLUTION: A polishing pad comprises a resin sheet having a plurality of tear-shaped foams and a polishing surface for polishing an article to be polished. When a free induction attenuation signal (FID) acquired by a pulse NMR is subtracted in order from a longer component of spin-spin relaxation time T2s by a least square method and waveform-separated, thereby divided into three components of an amorphous phase, an interface phase, and a crystal phase in order from the longer component of spin-spin relaxation time T2s, in the resin sheet has ΔT2s,15min, which is a difference between relaxation time T2s,15min of the amorphous phase component of the resin sheet acquired from the measuring result of the relaxation time using the pulse NMR after dressing of the polishing pad for 15 minutes and relaxation time T2s,dry of the amorphous phase component of the resin sheet acquired from the measuring result of the relaxation time using the pulse NMR in a dry state before the dressing of the polishing pad, of 0.35ms or more.SELECTED DRAWING: None

The invention relates to an electrophotographic cleaning blade, a process cartridge, an electrophotographic image forming apparatus, and a urethane molded body. An electrophotographic cleaning blade includes an elastic member including polyurethane and a support member supporting the elastic member, in which the elastic member has a storage elastic modulus of 12.0 to 18.0 MPa at a vibration frequency of 1 * 10 <-3 > Hz, a segment having a spin-spin relaxation time (T2L) of 250 to 360 [mu] s is present in a pulsed NMR measurement of a sample sampled from the elastic member in an environment of 50 DEG C, and the support member is configured to support the elastic member. The polyurethane includes a polyurethane elastomer including a polysiloxane segment having a specific structure, and the polysiloxane segment is bonded to a polyurethane backbone in the polyurethane elastomer.

Provided is a binder composition for an electricity storage device, which is capable of producing an electricity storage device electrode having excellent input / output characteristics and excellent charge / discharge durability characteristics at high temperatures by reducing internal resistance. This binder composition for an electricity storage device contains a polymer (A) and a liquid medium (B), and is characterized in that the value of spin-spin relaxation time (T2) of the polymer (A) measured by pulse NMR is 0.8 msec or less at 100 DEG C, and the value of the spin-spin relaxation time (T2) of the polymer (A) measured by pulse NMR is 0.5 msec or less when the total of the repeating units contained in the polymer (A) is 100 mass%. The polymer (A) contains 4 mass% or more of a repeating unit (a1) derived from an unsaturated carboxylic acid having a value of "monomer molecular weight (g / mol) / number of carboxylic acid functional groups" of less than 85 and / or a repeating unit (a2) derived from an unsaturated carboxylic acid having a value of "monomer molecular weight (g / mol) / number of carboxylic acid functional groups" of 85 or more.

The application provides a nuclear magnetic resonance angular velocity sensor system and a relaxation error suppression method, which comprises an atomic gas chamber, a lambda / 4 wave plate, a first laser, a second laser, a first collimating lens, a second collimating lens, a first linear polarizer, a second linear polarizer, a three-axis magnetic field coil, an oven, a photoelectric detector, a magnetic shielding barrel, a PBS and a balanced photoelectric detector; a static magnetic field, a modulation magnetic field and pumping light are longitudinally applied to the nuclear magnetic resonance angular velocity sensor system; detection light and nuclear resonance magnetic field are transversely applied to the nuclear magnetic resonance angular velocity sensor system, so that the nuclear magnetic resonance angular velocity sensor is in a working state; the influence of unstable electron spin relaxation time on nuclear precession frequency measurement is considered, nuclear precession frequency measurement error is suppressed, and the measurement performance of angular velocity is improved.

Provided is a binder composition for a power storage device, said binder composition being capable of producing a power storage device electrode having reduced internal resistance and excellent adhesion. The binder composition for an electricity storage device according to the present invention contains a polymer (A) and a liquid medium (B), the value of spin-spin relaxation time (T2) of the polymer (A) measured by pulse NMR is 0.8 msec or less at 100 DEG C, and the value of the spin-spin relaxation time (T2) is less than 0.8 msec when the total of the repeating units contained in the polymer (A) is 100 mass%. The polymer (A) contains 0-4 mass% of a repeating unit (a1) derived from an unsaturated carboxylic acid.

The invention relates to the technical field of data storage, in particular to a low-power-consumption data storage method and system based on spinning electrons. A spin current is generated in the spin-orbit coupling heterojunction through regulation and control of an orthogonal electromagnetic field, and the heterojunction comprises a heavy metal layer and a ferromagnetic layer with perpendicular magnetic anisotropy; a spin current is injected into a memory cell, the memory cell including a ferromagnetic free layer, a topological insulator layer, and a ferromagnetic reference layer. Through joint regulation and control of an orthogonal electromagnetic field of a spin-orbit coupling heterojunction, a non-orthogonal included angle is formed between the polarization direction of spin Hall current and the magnetization direction of a ferromagnetic layer, the conversion efficiency of spin-orbit torque is improved, and meanwhile, the interface spin relaxation time is optimized through a gradient doping technology, so that the spin-orbit torque conversion efficiency is improved. And the spin diffusion length breaks through the physical limit of the traditional heterojunction.

The application relates to the field of material analysis, and discloses a test method for analyzing the properties of lotus plumule extract, which comprises the following steps: introducing the lotus plumule extract to be detected into a flow detection pool to establish a transient electrically induced birefringence monitoring field; applying a high-frequency bipolar symmetric square wave electric field to an excitation electrode pair; using the polarity high-frequency switching characteristic to limit the displacement of free ions within a local perturbation range, and simultaneously inducing the electric dipole orientation arrangement of alkaloid molecules; removing the electric field; monitoring and recording the transient birefringence decay trajectory data; and processing the data to separate the spin relaxation time constants belonging to different components, and determining the contents of nuciferine, isonor-lausplumuline and methylnuciferine according to the mapping rule between the constants and the effective hydrodynamic radius of molecules. The application realizes the physical decoupling of overlapping signals in the time domain through the spin relaxation characteristic, effectively suppresses the ionization interference of a complex matrix, and ensures the stability of a detection baseline.

This invention relates to the field of data storage technology, specifically to a low-power data storage method and system based on spintronics. Spin current is generated in a spin-orbit coupled heterojunction through orthogonal electromagnetic field modulation. The heterojunction includes a heavy metal layer and a ferromagnetic layer with perpendicular magnetic anisotropy. The spin current is injected into a storage cell, which includes a ferromagnetic free layer, a topological insulator layer, and a ferromagnetic reference layer. This invention improves the conversion efficiency of spin-orbit torque by jointly modulating the orthogonal electromagnetic fields of the spin-orbit coupled heterojunction to form a non-orthogonal angle between the polarization direction of the spin Hall current and the magnetization direction of the ferromagnetic layer. Simultaneously, gradient doping technology optimizes the interface spin relaxation time, enabling the spin diffusion length to exceed the physical limits of traditional heterojunctions.

Provided is a medical device having excellent surface lubricity and durability.　This medical device comprises a base material layer and a surface lubricating layer supported on at least a part of the base material layer, wherein the value of a component having high molecular mobility in spin-spin relaxation time (T2) obtained using a pulse NMR CPMG method in the surface lubricating layer is greater than 18 ms.

A spin sensor is provided which is formed from a single diamond particle, wherein a maximum diameter of the diamond particle is greater than or equal to 0.01 µm and less than 10 µm, the diamond particle has a color center, an electronic state of the color center has a spin ground level of spin zero and a spin excitation level of spin ±1, and a spin-spin relaxation time T2 of the diamond particle is 180 nsec or more.

To provide a deterioration sign diagnosis method and a deterioration sign diagnosis system of a resin material capable of easily diagnosing a sign of deterioration of the resin material.SOLUTION: The resin material deterioration sign diagnosis method according to the embodiment includes measuring a resin material by a nuclear magnetic resonance apparatus capable of non-destructive observation, acquiring free induction decay curve data, obtaining a spin-spin relaxation time, evaluating a change in molecular mobility of the resin material based on the spin-spin relaxation time, and diagnosing a deterioration sign of the resin material.SELECTED DRAWING: Figure 5

To provide a cleaning blade that controls moisture absorption to prevent a reduction in hardness even in a high humidity environment and has excellent cleaning performance, and a process cartridge and an electrophotographic image forming apparatus having the cleaning blade.SOLUTION: A cleaning blade for electrophotography is provided with an elastic member containing polyurethane and a support member. The storage elastic modulus of the elastic member at an oscillation frequency of 1×10-3 Hz is 12.0-18.0 MPa. In pulse NMR measurement in a 50°C environment of a sample sampled from the elastic member, a segment with a spin-spin relaxation time (T2L) of 250-360 μs is present. A polyurethane elastomer has a polysiloxane segment having a specific structure. The polysiloxane segment is coupled to a polyurethane skeleton of the polyurethane elastomer.SELECTED DRAWING: Figure 1

To provide a blade rubber having high sweeping performance through durable use, by suppressing hardness change due to moisture absorption against environmental change at the time of use.SOLUTION: A blade rubber comprises an elastic member containing polyurethane elastomer, in which a portion of the elastic member is brought into contact with the surface of a member to be cleaned to clean the surface of the member to be cleaned. A storage modulus E' of the blade rubber at a vibration frequency of 1×10-3 Hz in a 24°C environment is 12.0 to 18.0 MPa, and in a pulse NMR measurement at 50°C environment on a sample taken from the blade rubber, there exists a segment with a spin-spin relaxation time (T2L) of 250 to 360 μs, the polyurethane elastomer includes a specific polysiloxane segment, and the polysiloxane segment is bonded to a structure including the polyurethane backbone in the polyurethane elastomer.SELECTED DRAWING: Figure 1