19617 results about "Crystal" patented technology

The invention relates to a crystal form of a benzothiophene substituted fused ring compound and a preparation method thereof. Specifically, the invention provides a crystal form A and a crystal form D of 2-amino-7-fluoro-4-((5S, 5aS, 6S, 9R)-1-fluoro-12-((1-((4-(fluoromethylsubunit) piperidine-1-yl) methyl) cyclopropyl) methoxyl)-5-methyl-5a, 6, 7, 8, 9, 10-hexahydro-5H-4-oxa-3, 10a, 11, 13, 14-pentaaza-6, 9-methylbridged naphtho [1, 8-ab] heptano-2-yl) benzo [b] thiophene-3-formonitrile, and the crystal form A and the crystal form D have the advantages that the crystal form A and the crystal form D are good in stability; and the medicine can be better used for clinical treatment. # imgabs0 #

The invention relates to a crystal form of a benzothiophene substituted fused ring compound and a preparation method thereof. Specifically, the invention provides a crystal form E, a crystal form G and a crystal form H of 2-amino-7-fluoro-4-((5S, 5aS, 6S, 9R)-1-fluoro-12-((1-((4-(fluoromethylsubunit) piperidine-1-yl) methyl) cyclopropyl) methoxyl)-5-methyl-5a, 6, 7, 8, 9, 10-hexahydro-5H-4-oxa-3, 10a, 11, 13, 14-pentaaza-6, 9-methylbridged naphtho [1, 8-ab] heptano-2-yl) benzo [b] thiophene-3-formonitrile, and the crystal form E, the crystal form G and the crystal form H have the advantages that the stability is good; and the medicine can be better used for clinical treatment. # imgabs0 #

The invention discloses an oxygen-containing heterocyclic compound salt, and a crystal form and application thereof. The oxygen-containing heterocyclic compound salt disclosed by the invention has a structure as shown in a formula II. The oxygen-containing heterocyclic compound salt and the crystal form thereof provided by the invention have one or more improved characteristics, which are represented by extremely high water solubility, and high dissolution rate and high solubility in physiological related medium simulated gastrointestinal fluid, so that the stability of the oxygen-containing heterocyclic compound under an oxidation condition is remarkably improved, and the stability of the oxygen-containing heterocyclic compound is improved. Low hygroscopicity and good crystal form stability are achieved, and oral absorption and long-term storage of the medicine are facilitated; and the preparation method is simple and suitable for industrial production. # imgabs0 #

The invention provides a multi-mode large model-based precision metal part defect detection method and system. The method comprises the following steps of: acquiring laser scattering image data of a precision metal part in an electromagnetic shielding environment; performing multi-scale spatial analysis on the laser scattering image data to extract a multi-modal image feature set containing a crystal boundary topological structure of the surface of the precision metal part and scattering spot distribution gradient features of the subsurface; converting process parameters, corresponding to the precision metal part, in an existing metal heat treatment process database into heat historical feature vectors, wherein the heat historical feature vectors comprise temperature gradient distribution features and time sequence phase change features; performing fusion processing on the thermal historical feature vector and the multi-modal image feature set through a multi-modal large model to obtain a fusion processing result so as to generate defect detection data; according to the invention, the detection rate and the detection efficiency of micron-sized defects in a complex electromagnetic environment are improved.

The invention relates to the technical field of quality monitoring, and discloses a diamond high-strength micro-powder quality detection method and system based on artificial intelligence. The method comprises the steps of obtaining a two-dimensional projection image sequence of diamond micro-powder particles, calculating a projection matrix based on camera calibration parameters and geometric constraints, obtaining a multi-view image data set of the particles, establishing a pixel-level corresponding relation, extracting three-dimensional space coordinates of the surfaces of the particles, and reconstructing dense point cloud data of the particles. Establishing a local coordinate system based on the dense point cloud data, determining attitude parameters of particles in a three-dimensional space, if the attitude parameters deviate from a normal range, performing attitude compensation processing to obtain standardized point cloud data, and performing three-dimensional grid model construction on the standardized point cloud data; and calculating geometrical characteristic parameters of the particles based on the three-dimensional grid model, performing defect detection on the surfaces of the particles, and generating a crystal integrity evaluation report of the particles. The quality detection accuracy of the diamond high-strength micro-powder particles is improved.

The invention relates to the technical field of laser etching, and discloses a laser double-sided etching stress control method and system for a quartz crystal, and the method comprises the steps: generating a double-sided complementary etching path based on the initial stress distribution of the quartz crystal; and front and back laser energy input is synchronously controlled, so that a double-sided thermal stress field forms dynamic balance. And obtaining the stress gradient distribution of the etching area in real time based on spectral analysis. And according to the deviation value of the stress gradient and a target threshold value, a laser processing parameter combination is dynamically adjusted, and a morphology-stress coupling optimization mode is started in a final processing stage. By accurately controlling the thermal stress balance and the stress gradient distribution in the laser processing process, the residual stress of the quartz crystal can be effectively reduced, and the shape and the performance of the quartz crystal are optimized, so that the processing precision, the material stability and the device reliability are improved.

The invention discloses high-purity hafnium oxide and a preparation method thereof, and relates to the technical field of hydrometallurgy. The preparation method of the high-purity hafnium oxide comprises the following steps: crushing a hafnium oxide raw material to obtain hafnium oxide powder; sequentially carrying out alkali fusion, water immersion and filtration treatment on the hafnium oxide powder to obtain a hafnium hydroxide filter cake; dissolving the hafnium hydroxide filter cake in a sulfuric acid solution to obtain a hafnium sulfate solution; adding sodium sulfate into the hafnium sulfate solution to obtain hafnium-containing double salt; dissolving the hafnium-containing double salt in a sulfuric acid solution, heating, evaporating, cooling and crystallizing to obtain hafnium sulfate crystals; dissolving the hafnium sulfate crystal in concentrated hydrochloric acid to obtain a hafnium oxychloride solution, heating, evaporating, cooling and crystallizing to obtain a hafnium oxychloride crystal; dissolving the hafnium oxychloride crystal in pure water, adding an oxalic acid solution, and precipitating to obtain hafnium oxalate; and calcining hafnium oxalate to obtain high-purity hafnium oxide. The preparation method of the high-purity hafnium oxide is green, environment-friendly, simple and efficient.

The invention relates to an optically controllable switching device having a first and second line section, between which an optically controllable switch (T2) is inserted, and having a sensor element (SE). The optically controllable switch (T2) disconnects or connects depending on an optical switching signal (SB), whether the switch is "on" or "off". The sensor element (SE) comprises a carrier material (TM) with crystals comprising one or more paramagnetic centers (NV). When irradiated with pump radiation (LB), the sensor element (SE) emits fluorescent radiation (FL) which depends on the magnetic flux density B at the location of the sensor element (SE). A line current (I LTG) in the first line section of the line (LTG) generates a magnetic field with a flux density B which, with sufficient current strength, influences the fluorescent radiation (FL) from one or more paramagnetic centers (NV). The optically controllable switching device has first means (LWL1, PL1, LIV) for irradiating the one or more paramagnetic centers (NV) with pump radiation (LB) and second means (LWL2, F1, PD, LIV) for detecting and separating the fluorescent radiation (FL) and for detecting a measured value signal which depends on the intensity of the fluorescent radiation (FL) and / or on the phase shift of the modulation signal of the temporal profile of the intensity of the fluorescent radiation (FL). The optically controllable switching device has third means (LIV) for generating an optical switching signal (SB) and for controlling the state of the optically controllable switch (T2) using this optical switching signal (SB).The optical switching signal (SB) depends on the intensity of the fluorescence radiation (FL) and / or on the phase shift of the modulation signal of the temporal course of the intensity of the fluorescence radiation (FL).

The invention belongs to the technical field of crystal processing, and relates to a method for obtaining a single crystal diamond (111) surface wafer by using double-pulse-width laser. Femtosecond laser and picosecond laser are adopted for machining and stripping the blocky single crystal diamond to obtain a first crystal face (111), then femtosecond laser and picosecond laser are continuously adopted for machining and stripping the remaining blocky single crystal diamond, and the blocky single crystal diamond is obtained; the process for obtaining the crystal face (111) comprises the following steps of: scanning femtosecond laser on the crystal face (111) to process a plurality of graphitization modification lines which are full of the crystal face (111) and are parallel to each other, wherein the graphitization modification lines are parallel to the crystal orientation of a diagonal line [110] of the crystal face (001); carrying out scanning processing along the graphitization modification line by utilizing picosecond laser, so as to form a leap crack on the basis of the graphitization modification line of the crystal face (111); and then stripping is carried out. By means of the method, the wafer with the complete (111) face can be obtained through cutting in the ultra-thick (001) CVD monocrystal diamond.

Embodiments of improved methods are provided to form ordered structures on a surface of a substrate using direct self-assembly (DSA) of ionic liquid crystals (ILCs). More specifically, various embodiments of methods are provided to control the pitch of a layered structure formed on a substrate surface via self-assembly of ILCs having cation head groups, alkyl tail groups and anions. In the embodiments disclosed herein, the pitch of the layered structure is controlled by: (a) controlling the cation / anion charge ratio of the cation head groups and anions included within the ILCs, and / or (b) adding an ionic liquid to a solution comprising the ILCs.

Provided are processes of filling features with method. The processes include deposition, etch, and clean operations using a molybdenum chloride (MoClx) compound. The MoClx compound may be controlled to selectively deposit on metal nitride features compared to dielectric, form plugs and crystals on dielectric materials, and perform a net etch of materials within the feature. Also provided are in-situ clean processes in which the MoClx compound is used to remove oxidation from underlying surfaces prior to deposition. Subsequent deposition using the MoClx precursor may deposit an initial layer and / or fill a feature.

The invention provides a preparation method of laser cladding heterostructure stainless steel. According to the method, dried stainless steel pre-alloyed powder is subjected to laser melting deposition to form heterostructure stainless steel alloy with cross deposition of coarse grains and fine grains; the grain size of the fine crystal is 3-6 [mu] m, and the structure of the fine crystal layer is an equiaxed structure; the grain size of the coarse crystal is 20-50 [mu] m, and the structure of the coarse crystal layer is a columnar crystal formed along the Z axis. According to the method, the specific coarse grain / fine grain cross deposition heterostructure is presented in the stainless steel by changing the deposition layer process parameters and the scanning path, the material strength is improved while the material ductility is guaranteed, and the alloy has the excellent mechanical property.

The invention discloses a switch cabinet discharge detection method and system, and relates to the technical field of power equipment state monitoring and fault diagnose.The light intensity attenuation rate and the vibration frequency are collected through a photonic crystal fiber, the concentration of decomposed gas is detected in combination with a Raman spectrum, and a space-time joint feature matrix is generated; performing space weight distribution on the space-time joint feature matrix based on the switch cabinet structure, and inputting the space weight to an RBF-SVM (Radial Basis Function-Support Vector Machine) to generate discharge type probability distribution; based on a high-frequency energy parameter and a gas decomposition concentration parameter in the spatio-temporal joint characteristic matrix, inputting the parameters into a multiple linear regression model, calculating an insulation aging index, and judging an insulation degradation grade according to a threshold value; the photonic crystal fiber is used for collecting the light intensity attenuation rate and the vibration frequency, the Raman spectrum is combined for detecting the decomposition gas concentration to generate the space-time joint characteristic matrix, synchronous monitoring of various physical and chemical parameters in the switch cabinet is achieved, and the accuracy and comprehensiveness of recognition of different types of discharge phenomena are improved.

The invention provides an intelligent control method and system for a lithium carbonate preparation process, and the method comprises the steps: collecting the temperature field, ion concentration, feeding flow velocity and turbulence intensity data of a reaction kettle through a sensor array, and generating a state feature vector through multivariate analysis; inputting the feature vector into a depth prediction model to output a particle size distribution probability cloud picture and an impurity trend; inputting the probability cloud picture and the impurity trend into a multi-target optimizer to generate a temperature compensation value, a feeding correction coefficient and a stirring adjustment instruction; inputting the instruction into an anti-interference execution module and converting the instruction into an equipment driving signal; actual crystal data are obtained through an online particle size analyzer, and the prediction model is updated; and outputting a closed-loop optimization instruction to the execution terminal through the digital twin platform. The product consistency and the production stability are synchronously improved through full-process closed-loop intelligent control, and reliable technical support is provided for continuous production of battery-grade lithium carbonate.

The invention relates to the technical field of filling materials, and particularly discloses an ardealite-based high-strength anti-seepage filling material and a preparation process thereof, the ardealite-based high-strength anti-seepage filling material comprises 50%-65% of pretreated ardealite, 15%-25% of Portland cement, 5%-15% of superfine slag powder, 5%-10% of electrolytic manganese residues, 5%-8% of silica fume, 3%-6% of metakaolin, 2%-4% of a composite alkali activator and 0.5%-1.2% of a polycarboxylic acid water reducer, 0.3%-0.8% of an organic silicon water repellent and 0.05%-0.1% of cellulose ether; according to the invention, through chemical reaction of Mn < 2 + > in the electrolytic manganese residue and SO4 < 2-> in the phosphogypsum, micron-sized manganite crystals (MnAl2 (SO4) 4. 22H2O) are generated to actively fill internal micro-cracks of the material, so that a filling body is endowed with a self-repairing function and the impermeability is improved, and a composite alkali activator composed of NaOH and water glass is used for synergistically activating potential gelling activity of the superfine slag powder and the silica fume, so that the self-repairing filling material is prepared. And the formation of hydration products is accelerated, and 0.3-0.5 T of pulsed magnetic field is applied in the stirring process, so that the manganite crystals are guided to orderly grow along the expected stress direction of the filling body, and the compressive strength is improved.

The present invention relates to the technical field of microcrystalline glass, and in particular to a strengthened microcrystalline glass with high drop resistance, a preparation method and an application thereof, wherein the strengthened microcrystalline glass comprises a compressive stress layer and a tensile stress layer, and a spinel crystal is the main crystalline phase; the composition of the strengthened microcrystalline glass substantially does not contain Li 2 O; the strengthened glass-ceramics meets the following requirements: CS_50≥100MPa, |CT_AV|≥70MPa, DOL_0≥0.13t, where t is the thickness of the glass-ceramics. The strengthened glass-ceramics of the present invention have excellent deep stress characteristics, which, combined with the high intrinsic strength originally possessed by the glass-ceramics, give the strengthened glass-ceramics excellent mechanical properties, especially drop impact resistance. The strengthened glass-ceramics of the present invention can achieve a drop impact resistance effect that is far superior to that of existing spinel glass-ceramics, and can meet the application requirements of cover glass for high-end electronic products.

The invention relates to the technical field of hot galvanizing, and discloses an automobile hot galvanizing process parameter optimization method and system based on artificial intelligence, and the method comprises the steps: carrying out window division processing on initial cooling parameters, constructing a cooling rate matrix, and finely depicting heat exchange states of different cooling sections; the problem of insufficient cooling control precision under different cooling speed alternating conditions is solved, a microscopic image is combined to extract the grain main axis direction, calculate the mean value and range of included angles, generate a consistency index set and quantitatively describe the dispersion problem in the grain growth direction, the cooling speed and the consistency index are jointly matched, and a cooling speed structure offset matrix is constructed. The method comprises the following steps: identifying a space mutation region, accurately positioning abnormal coarse or abnormal arrangement positions of crystal grains, and finally screening target cooling parameters according to a cooling index value corresponding to an abnormal region to realize local adjustment of a cooling process, thereby reducing the abnormal growth rate of the crystal grains and improving the direction consistency of the crystal grains.

The present invention provides a spinel glass-ceramic, a chemically strengthened glass-ceramic and an application thereof. The spinel glass-ceramic comprises a main crystalline phase (Zn, Mg)Al2O4; the average transmittance of the spinel glass-ceramic with a thickness of 0.7 mm in a visible light range is less than or equal to 70.00%; the composition of the spinel glass-ceramic, expressed in molar percentage of oxides, comprises: SiO2 38.00 mol% to 48.30 mol%, Al2O3 25.50 mol% to 30.00 mol%, MgO 5.00 mol% to 8.00 mol%, ZnO 8.00 mol% to 14.00 mol%, ZrO2 3.00 mol% to 5.00 mol%, Na2O 7.20 mol% to 14.00 mol%, K2O 0.00 mol% to 2.00 mol%, B2O3 3.00 mol% to 8.00 mol%, Y2O3 0.00mol%~1.00mol%, BaO0.00mol%~2.10mol%; the composition of the spinel glass-ceramic does not include Li2O. The spinel glass-ceramic provided by the present invention has high intrinsic strength, and can be chemically strengthened to obtain chemically strengthened glass-ceramic with excellent drop impact resistance, which can meet the use requirements of electronic equipment protective glass. The spinel glass-ceramic provided by the present invention does not require the use of expensive lithium, and has better economic benefits compared to the existing lithium-containing spinel glass-ceramic.

The application discloses a transparent strengthened glass ceramic with high stress depth, which contains spinel crystals and zirconia crystals in a crystal phase of the strengthened glass ceramic, and does not contain Li-containing crystals; the strengthened glass ceramic has a compressive stress region extending from a surface thereof to a compression depth, a compressive stress layer depth DOL_0 of the strengthened glass ceramic is greater than or equal to 14% of a thickness of the strengthened glass ceramic, and a tensile stress line density of the strengthened glass ceramic is greater than or equal to 25000 MPa / mm. By introducing more Li ions and Na ions into a spinel glass ceramic component, the prepared transparent spinel glass ceramic can be chemically strengthened, a transparent strengthened glass ceramic with high CS, DOL_0, CT_AV and CT_LD is obtained, and the strengthened glass ceramic exhibits excellent drop resistance.

The invention relates to the field of neodymium iron boron magnetic materials, in particular to a high intrinsic coercive force neodymium iron boron magnetic material and a preparation method thereof, and the high intrinsic coercive force neodymium iron boron magnetic material comprises the following raw materials in parts by weight: 52.5-57.2 parts of PrNd, 105-115.3 parts of Nd, 9.0-10.3 parts of B, 15-35 parts of Tb, 70-80 parts of Dy, 10-25 parts of Co and 650-680 parts of Fe. The two rare earth elements Tb and Dy are added into the neodymium-iron-boron magnetic material, so that the magnetocrystalline anisotropy field of the crystal is remarkably enhanced, and the intrinsic coercive force of the neodymium-iron-boron magnetic material is greatly improved.

The invention belongs to the technical field of topological photonic crystals, and discloses a topological laser resonant cavity, a design method thereof and a topological valley photonic crystal laser. According to the invention, three different photonic crystal areas are utilized to form a three-layer heterostructure, and the three different photonic crystal areas are divided into A, B and A'areas according to the same lattice period array arrangement; the area A and the area A'are the innermost layer and the outermost layer of the topological laser resonant cavity respectively, the closed topological laser resonant cavity is formed at the interface of the area A and the area A ', and the area B is embedded in the middle of the interface; the three different photonic crystal regions have different primitive cell energy band characteristics, and the energy band structure of the photonic crystal primitive cell in the region B has a linear dispersion curve and can be described by a Dirac equation; and the photonic crystal primitive cells in the A'and the A region are energy band structures with different topological valley numbers obtained by breaking the symmetry of the photonic crystal primitive cells in the B region. According to the invention, the performance of the topological valley photonic crystal laser can be enhanced.

The invention discloses a neodymium-iron-boron magnet, which comprises main phase crystal grains, a thin layer crystal boundary phase and a triangular region crystal boundary phase, and is characterized in that the neodymium-iron-boron magnet comprises 28 to 33 weight percent of R, 0.84 to 0.94 weight percent of B, 0.05 to 1 weight percent of Co, 0.05 to 0.55 weight percent of Cu, 0.3 to 0.6 weight percent of Ga, 0 to 0.55 weight percent of M2, 0.1 to 0.6 weight percent of M3, 66 to 70 weight percent of Fe and the balance of Fe, wherein R is a rare earth element and at least comprises PrNd; the triangular region grain boundary phase comprises an R6T13M1 phase, the element M in the R6T13M1 phase is selected from any two or more elements of Al, Cu, Ga, Ti, Sn and / or Zr, and the element T comprises Fe and / or Co; the sum of the areas of the R6T13M1 phases in the microscopic structure cross section of the neodymium-iron-boron magnet accounts for 5.2%-8.4% of the area of the microscopic structure cross section. The rare earth permanent magnet with high residual magnetism, high coercive force and good squareness consistency is obtained under the condition that no heavy rare earth is added or a small amount of heavy rare earth is added.

The invention discloses a ternary magnetic selenide and a preparation method of a single crystal of the ternary magnetic selenide, and relates to the technical field of crystal material preparation. The chemical formula of the ternary magnetic selenide is VCrSe3, and the ternary magnetic selenide can be prepared by taking a vanadium source, a chromium source and a selenium source in a specific proportion as raw materials and an iodine source as a transport agent through a chemical vapor transport method. The crystal structure of the VCrSe3 single crystal is a monoclinic phase (I2 / m), and phase transformation from antiferromagnetic to ferromagnetic and spin reorientation occur at low temperature, so that the VCrSe3 single crystal has application potential in the fields of spintronics, optoelectronics and the like; the large-size and high-quality VCrSe3 single crystal prepared by the method can provide a material for intrinsic physical property research and development of functional devices such as optoelectronic devices and spinning electrons.

The invention relates to the technical field of image analysis, in particular to a polishing effect detection method for an indium phosphide wafer, which comprises the following steps: evaluating the polishing quality through model comparison of three-dimensional images before and after polishing, analyzing the polishing retention difficulty according to the internal defect data and defect aggregation degree of the crystal before polishing, and determining the polishing retention difficulty of the indium phosphide wafer. And performing polishing damage analysis on the basis of the obtained internal defect data of the wafer before and after polishing, and analyzing the polishing effect according to the obtained polishing quality evaluation result, polishing maintenance difficulty analysis result and polishing damage, so that the polishing quality of the polishing equipment in the polishing process is accurately evaluated on the basis of model comparison of the three-dimensional images before and after polishing; and meanwhile, accurate analysis on damage and maintenance difficulty in the polishing process is considered, so that the polishing effect is comprehensively evaluated, and the accuracy and rationality of evaluation on the polishing effect are improved.

The invention discloses an automatic alignment and integrated control system and method for an optical crystal array. The automatic alignment and integrated control system comprises a quantum entanglement enhanced ultra-precise sensing array, a multi-factor coupling error prediction module, a full-link adaptive compensation execution module, a central control module and a federal learning collaborative optimization module. The sensing array is used for acquiring multi-dimensional error data such as sub-nano displacement, Raman spectrum deformation, infrared temperature rise and friction stress in real time; the prediction module is used for mining coupling characteristics between error sources based on an attention mechanism and predicting an instant alignment error and a hysteresis deformation error; the compensation execution module realizes full-link compensation through quantum traceability calibration, mechanical arm dynamic composite compensation and process parameter cooperative adjustment according to the prediction error; the central control module performs synchronous scheduling and conflict coordination; and the federated learning module realizes collaborative optimization and privacy protection of models among multiple devices. According to the invention, ultrahigh-precision and adaptive intelligent integration of the optical crystal array is realized.

The invention discloses a gradient composite coated modified lithium manganese iron phosphate positive electrode material and a preparation method thereof, and belongs to the technical field of positive electrode materials. An LMFP precursor is pretreated through a citric acid-ethanol mixed solution, an active crystal face is exposed, and then a three-dimensional gradient coating structure of a polydopamine (PDA) chemical bonding layer, an MXene nanosheet middle layer and a polyaniline (PANI) conductive outer layer is sequentially constructed on the surface of the material, so that the electronic conductivity of the lithium manganese iron phosphate positive electrode material is increased to 10 <-3 > S / cm magnitude, and the performance of the lithium manganese iron phosphate positive electrode material is improved. The capacity retention ratio (1C) of 500 cycles is larger than 90%, the coating layer is not prone to falling off, and meanwhile dissolution of manganese ions is effectively inhibited.

The invention discloses a hydroxytyrosol-ergothioneine eutectic crystal as well as a preparation method and application thereof, and belongs to the technical fields of medicines, foods, daily chemicals and the like. The invention provides a hydroxytyrosol-ergothioneine eutectic crystal. The X-ray powder diffraction pattern of the hydroxytyrosol-ergothioneine eutectic crystal has characteristic diffraction peaks at least corresponding to the positions where the 2 theta value is 4.21 degrees + / -0.2 degrees, 8.36 degrees + / -0.2 degrees, 12.29 degrees + / -0.2 degrees, 15.29 degrees + / -0.2 degrees, 19.40 degrees + / -0.2 degrees, 20.98 degrees + / -0.2 degrees, 23.12 degrees + / -0.2 degrees and 28.73 degrees + / -0.2 degrees. According to the hydroxytyrosol-ergothioneine eutectic, the melting point of hydroxytyrosol is increased, the hygroscopicity of hydroxytyrosol is remarkably reduced, and meanwhile the stability of hydroxytyrosol and ergothioneine is enhanced. In addition, after the ergothioneine hydroxytyrosol forms the eutectic crystal, the ergothioneine hydroxytyrosol can also play better anti-oxidation and anti-aging effects.

The invention provides a preferred orientation single crystal lithium-rich manganese-based positive electrode material, a preparation method thereof and a lithium ion battery, and relates to the technical field of battery positive electrode material preparation. The lithium-rich manganese-based positive electrode material is in a single crystal morphology, and in a diffraction pattern obtained by adopting an XRD (X-Ray Diffraction) instrument taking Cu K alpha as an incident light source, the peak intensity ratio I (003) / I (104) gt of a (003) peak of which 2 theta is positioned at 18.6 + / -0.1 degrees to a (104) peak of which 2 theta is positioned at 44 + / -0.5 degrees; 2. The single crystal lithium-rich manganese-based material with the specific crystal face preferentially growing is prepared, the material preferentially grows along the (003) crystal face by regulating and controlling the synthesis process of the material, the electrochemical performance of the material can be remarkably improved, and especially the stability under the high-rate charging and discharging condition can be remarkably improved.

The invention relates to a purely optical fuse with a first and second line section, between which an optically controllable switch (T2) is inserted, and with a sensor element (SE). The sensor element (SE) comprises a carrier material (TM) with crystals comprising one or more paramagnetic centers (NV). When irradiated with pump radiation (LB), the sensor element (SE) emits fluorescent radiation (FL) that depends on the magnetic flux density B at the location of the sensor element (SE). A line current (I LTG) in the first line section of the line (LTG) generates a magnetic field with a flux density B which, with sufficient current strength, influences the fluorescence radiation (FL) from one or more paramagnetic centers (NV). The optically controllable switching device has first means (LWL1, PL1, LIV) for irradiating the one or more paramagnetic centers (NV) with pump radiation (LB) and second means (LWL2, F1, PD, LIV) for detecting and separating the fluorescence radiation (FL) and for detecting measured values which depend on the intensity of the fluorescence radiation (FL) and / or on the phase shift of the modulation signal of the temporal progression of the intensity of the fluorescence radiation (FL). The purely optical fuse compares these measured values with intensity and / or phase shift threshold values.The optically controllable switching device has third means (LIV) for generating an optical switching signal (SB) depending on the comparison result and for controlling the state of the optically controllable switch (T2) with this optical switching signal (SB).

The invention provides a laser positioning method for improving gemstone cutting precision, and belongs to the technical field of gemstone cutting laser positioning. A gemstone crystal refractive index tensor model and a ray tracing algorithm are established to simulate a propagation path of light in a gemstone; a thermo-optic effect prediction model is adopted to predict a focus drift distance according to temperature distribution and laser power data and calculate wavefront predistortion phase distribution for compensation, and a zero-vibration input shaping filter is designed for a galvanometer scanning system to suppress residual vibration. A composite control strategy that feedforward control compensates inertia lag and feedback control corrects position errors is adopted to drive a galvanometer, the inherent frequency of a system is recognized through spectral analysis, and the scanning frequency is adjusted to avoid resonance. The technical problem that in the long-time machining process, due to the thermo-optic effect and vibration of a galvanometer scanning system, the laser focus point position generates accumulated drifting, and the cutting precision is reduced is solved.