63 results about "Cell volume" patented technology

The present application discloses a hard carbon material and a preparation method therefor, a negative electrode material, and a sodium ion battery. The atomic pair distribution function technology is used to deconstruct crystal information, and the hard carbon material with the lattice curvature Formula (1) being 0.03-0.15 and the closed-cell volume being 0.04-0.5 cm3·g-1 has a high closed-cell ratio, large sodium storage capacity, and excellent pore strength, is not prone to structural collapse during long-term charge and discharge processes, and has high cycle stability.

The invention relates to the technical field of biology, in particular to a human cholangiocarcinoma drug-resistant cell line HuCCT1-GEM-2 and application thereof.The human cholangiocarcinoma drug-resistant cell line HuCCT1-GEM-2 is preserved in the China Center for Type Culture Collection on May 11, 2023, the preservation number is CCTCC NO: C2023103, the IC50 value of the human cholangiocarcinoma drug-resistant cell line HuCCT1-GEM-2 to gemcitabine is 314.5 mu M, the IC50 value of a parent cell HUCCT1 to gemcitabine is 12.7 mu M, the drug-resistant index is up to 24.8, and the human cholangiocarcinoma drug-resistant cell line HuCCT1-GEM-2 can be used as a drug-resistant cell line. The cell body is obviously enlarged and rounded or is more irregular in shape, the specific volume of the cell cytoplasm is larger, binuclear or multinuclear appears in the cell, and the drug-resistant cell presents obvious bulk aggregation growth; after 24 hours, the growth rate of the HuCCT-1-GEM-2 cell is obviously slower than that of a parent cell, and the HuCCT-1-GEM-2 cell can be used for researching the drug resistance mechanism of bile duct cancer.

Disclosed herein is a design for an electrochemical energy-storage cell that can withstand high pressure environments. The cell has a gas-tight cell housing that encloses an electrolyte in contact with an electrode assembly. The cell housing defines a cell volume. A pressure-equalizing member is connected to the cell housing and constructed to displace a portion of the cell volume to equalize a pressure differential between an external pressure on the cell and an interior pressure of the cell. The electrolyte remains in a liquid or gas phase when the pressure-equalizing member displaces the portion of the cell volume and equalizes the pressure differential.

The invention relates to a vanadium oxide coated and zirconium-doped modified precursor and a preparation method and application thereof.According to the preparation method, zirconium doping and an ammonium vanadate solution are specifically used, cation mixing is inhibited through the stabilization effect of zirconium, lattice distortion is reduced, the stable unit cell volume can be maintained through zirconium doping, and the stability of the unit cell volume is improved; and the problem of unit cell expansion caused by conventional doping elements is avoided, so that the high-rate performance of the material is reserved. The semiconductor-metal phase change characteristic of vanadium oxide is utilized, the critical temperature can be adjusted to be close to the room temperature, and the high-temperature stability and electronic conductivity of the material are improved; through the combination of the two, the high-rate discharge performance of the ternary positive electrode material and the structural stability of the material can be greatly improved.

The chemical formula of the polyacid compound is H14Na4 (CoC6H12N4) 3 (NaC6H12N4) (SbW9O33) 2.22 H2O, the crystal structure parameters of the polyacid compound are as follows: the molecular formula is C24Co3N16Na5O88Sb2W18, the molecular weight is 5764.94, the polyacid compound belongs to an orthogonal crystal system, the space group is P212121, the cell parameters are as follows: a / is 15.4423 (11), b / is 25.7133 (18), c / is 31.886 (2), alpha / degree, beta / degree and gamma / degree are all 90, and the cell volume / 3 is 12661.2 (16). The compound prepared by the invention is more prominent in antitumor activity, has a remarkable inhibition effect on hepatoma carcinoma cells, and provides an important basis for developing novel efficient antitumor drugs.

Systems and methods for delivering a process gas having a desired diborane concentration to a processing volume of a processing chamber are provided. In one embodiment, a system includes a borane concentration sensor. The borane concentration sensor includes a body and a plurality of windows. Here, each window of the plurality of windows is disposed at an opposite end of the body and the body collectively defines a cell volume with the plurality of windows. The borane concentration sensor further includes a radiation source disposed outside the unit volume and adjacent to a first window of the plurality of windows, and a radiation detector disposed outside the unit volume and adjacent to a second window of the plurality of windows.

The invention relates to a polymorphic nonlinear optical crystal material of 3-amino-1, 2, 4-triazole nitrate and preparation and application of the polymorphic nonlinear optical crystal material, the chemical formula of the polymorphic material is (C2H5N4) (NO3), the molecular weight is 147.11, and the polymorphic material specifically comprises two crystal forms: (1) alpha-(C2H5N4) (NO3) belongs to a triclinic system, the space group is P1, the cell parameters are alpha = 110.44-114.63 degrees, (2) beta = 93.04-97.71 degrees, gamma = 93.49-97.64 degrees and Z = 2, and compared with the prior art, the cell volume of the polymorphic nonlinear optical crystal material is larger than that of the prior art, and the cell volume of the polymorphic nonlinear optical crystal material is larger than that of the prior art The polymorphic alpha-(C2H5N4) (NO3) and beta-(C2H5N4) (NO3) materials involved in the invention have a relatively large frequency-doubled effect at 1064nm, and phase matching can be realized by the polymorphic alpha-(C2H5N4) (NO3) materials and the polymorphic beta-(C2H5N4) (NO3) materials. In addition, the ultraviolet absorption cut-off edges of the crystal material are 240 nm and 248 nm respectively, and the crystal material has wide application prospects in the photoelectric technical fields of laser frequency conversion, high-speed optical signal modulation, holographic storage systems and the like.

This invention relates to a germanium-based chiral perovskite second-order nonlinear optical crystalline material, its preparation and application, wherein the chemical formula of the material is ( R -C7H 10 NO)GeI3 and ( S -C7H 10 NO)GeI3, where R -C7H 10 NO is a (R)-2-(1-hydroxyethyl)pyridine cation. S -C7H 10 NO is a (S)-2-(1-hydroxyethyl)pyridine cation. This crystal belongs to the hexagonal crystal system, space group [space group number missing]. P 63, cell parameters a =17.0~18.0 Å, b =17.0~18.0 Å, c =7.0~8.0 Å, unit cell volume V =2000~2200 Å 3 , α = β =90°, gamma =120° Z= 2. Under 1200 nm laser irradiation, the nonlinear optical crystal of the present invention ( R -C7H 10 NO)GeI3 and ( S -C7H 10 The frequency doubling effect of GeI3 powder is 15 times that of KH2PO4; under 2000 nm laser irradiation, the frequency doubling effect of the crystalline material powder is 1.0 times that of KTiOPO4, and both can achieve phase matching. The crystalline material also has a large birefringence, wherein ( R -C7H 10 NO)GeI3 is 0.518 @ 546 nm, ( S -C7H 10 The NO)GeI3 has a wavelength of 0.529 nm at 546 nm and a moderate optical band gap (2.68 eV). The crystalline material of this invention shows significant engineering application value in nonlinear optical applications such as near-infrared laser frequency conversion, optical parametric amplification, and electro-optic signal processing.

The application provides a fluorinated guanidinium borate nonlinear optical crystal and a preparation method and application thereof. The chemical formula of the crystal is [C(NH2)3]B6O9F, the molecular weight is 287.95, the crystal belongs to an orthorhombic system, the space group is Pnma, Pna 21, the cell parameter is a=7.8420(11) Å, b=15.1862(19) Å, c=8.5762(9) Å, α =90°, β =90°, γ =90°, the unit cell volume is 1021.3(2) ų, the crystal is grown by a high-temperature solution method or a flux method, the frequency doubling effect of the crystal is 0.4 times of that of KH2PO4 (KDP), the ultraviolet cutoff edge is 190 nm, the birefringence is large, the birefringence is 0.133 @ 1064 nm, and the deep ultraviolet phase matching capability is deep, the shortest matching wavelength is 196 nm, and the crystal can be applied to deep ultraviolet nonlinear optical crystals in a full solid-state laser.

Disclosed herein is a design for an electrochemical energy-storage cell that can withstand high-pressure environments. The cell has a gas-tight cell housing that encloses an electrolyte in contact with an electrode assembly. The cell housing defines a cell volume. A pressure-equalizing member is connected to the cell housing and constructed to displace a portion of the cell volume to equalize a pressure differential between an external pressure on the cell and an interior pressure of the cell. The electrolyte remains in a liquid or gas phase when the pressure-equalizing member displaces the portion of the cell volume and equalizes the pressure differential.

The present invention relates to a vanadium oxide-coated and zirconium-doped modified precursor, as well as its preparation method and application. The preparation method specifically utilizes zirconium doping and an ammonium vanadate solution. The stabilizing effect of zirconium suppresses cation mixing and reduces lattice distortion. Zirconium doping maintains unit cell volume stability, avoiding the unit cell expansion caused by conventional doping elements, thereby preserving the material's high-rate performance. By utilizing the semiconductor-metal phase transition properties of vanadium oxide, the critical temperature of which can be adjusted to near room temperature, improving the material's high-temperature stability and electronic conductivity. The combination of these two properties can significantly improve the high-rate discharge performance of ternary cathode materials, as well as the material's structural stability.

A printing intaglio plate including a resin layer constituting a plate surface, in which a Shore A hardness of the resin layer is 30 degrees or more and 90 degrees or less, a surface free energy of the resin layer is 10 mN / m or more and 35 mN / m or less, and the resin layer includes a cell on the plate surface and a coefficient of variation in cell volume of the cell, for printing at the same ink concentration, is 0.2 or less.

The application provides a compound beta-cesium cadmium silicon sulfur and a beta-cesium cadmium silicon sulfur nonlinear optical crystal and a preparation method and an application, the chemical formula of the compound is beta-Cs2CdSi4S 10 , the molecular weight is 755.04, the chemical formula of the crystal is beta-Cs2CdSi4S 10 , and the molecular weight is 755.04. The crystal belongs to a tetragonal system, the space group is I -4, the cell parameter is a=8.4233(7)Å, c=14.6136(12)Å, and the unit cell volume is 1036.86(19)Å 3 . The crystal is prepared by a vacuum sealing tube method, the frequency doubling effect of the beta-Cs2CdSi4S 10 crystal is about 1.1-1.2 times of that of AgGaS2 (AGS); the band gap of the crystal is 4.21 eV, the ultraviolet cutoff edge is 254 nm, and the infrared transparent range is greater than 8 mu m. The crystal has the advantages of simple preparation process, short growth period, avoidance of raw material leakage and pollution. The crystal has important applications in the fields of atmospheric remote sensing and communication, and can be used for manufacturing frequency down-conversion devices for high-power laser output applications.

The invention discloses a lattice data compression method and system for additive manufacturing and a medium, belongs to the technical field of additive manufacturing, and aims at solving the technical problem that an efficient compression method for lattice data is urgently needed at present to improve the efficiency and precision of lattice structure modeling at the same time. The method comprises the following steps: constructing a unit cell volume field data set based on a predefined unit cell type; constructing a neural network model based on an auto-encoder architecture; training the neural network model through the unit cell volume field data set to obtain a unit cell volume field prediction model; extracting a three-dimensional grid structure of target unit cell volume field data through the unit cell volume field prediction model; and performing accuracy verification on the extracted three-dimensional grid structure, and performing optimization training on the unit cell volume field prediction model according to a verification result.

The invention relates to a cell unit (14) comprising: a cell layer (52) comprising electrochemically active layers (54), and an interconnector plate (62), wherein a periphery (56) of the cell layer (52) is attached to a periphery (64) of the interconnector plate (62), wherein a central portion (58) of the cell layer (52) and a central portion (66) of the interconnector plate (62) define a cell volume (50) therebetween, and wherein the interconnector plate (62) has a rounded shape in the central portion (66) forming a bulge (70) that protrudes away from the cell layer (52), said bulge (70) having a peak portion (74) that is arranged to initiate a touch-contact with a cell layer (52) of an adjacent cell unit (14).

The invention relates to a silicon carbide wafer with improved surface crystallization quality and application, and belongs to the technical field of silicon carbide wafer surface treatment. According to the scheme, the silicon surface of the silicon carbide wafer is processed through the hydrogen-oxygen plasmas in a certain proportion, dangling bonds are broken through plasma processing, stress is effectively released through temperature control, the problem that the wafer surface crystallization quality is poor due to the dangling bonds is effectively solved, and when the epitaxial layer grows on the processed wafer, the wafer surface quality is improved. And the lattice adaptability of the epitaxial layer and the wafer is better, so that the quality of the epitaxial layer is better. The IF1 value and the IF2 value of the treated silicon carbide wafer are increased, the curvature change is smaller than or equal to 1%, the unit cell volume change rate is smaller than or equal to 0.01%, the damage to the surface is small in the treatment process, the surface of the wafer is not prone to being damaged, and dislocation slippage is not prone to being caused.

The application provides a icariin-1,2-dipyridyl ethane co-crystal, and relates to the technical field of crystal drug molecules. The co-crystal uses Cu-K alpha radiation, and the X-ray diffraction spectrum expressed by 2theta has characteristic peaks at 5.00+ / -0.2 degrees, 10.09+ / -0.2 degrees, 10.28+ / -0.2 degrees, 12.41+ / -0.2 degrees, 17.14+ / -0.2 degrees, 23.01+ / -0.2 degrees, 24.43+ / -0.2 degrees, 26.88+ / -0.2 degrees, 27.53+ / -0.2 degrees and 27.60+ / -0.2 degrees. The crystallographic measurement parameters are as follows: triclinic crystal system, space group P-1, cell parameters alpha=104.080(2) degrees, beta=92.0920(10) degrees, gamma=90.1980(10) degrees, cell volume V=0.5937(5) nm3, Z=2, Dc=1.406 g / cm3, F(000)=288, mu=0.152 mm-1, Rint=0.038, R=0.038, wR=0.093, S=1.03, and the related preparation method and application are provided. The icariin-1,2-dipyridyl ethane co-crystal of the application has achieved great improvement in stability and bioavailability.

The invention discloses a method for regulating and controlling the lattice structure and the physical property of perovskite oxide based on oxygen vacancy, and the prepared perovskite oxide film has the continuous regulation and control characteristic of anisotropic physical property compared with the conventional directly grown perovskite oxide film. The method has important application value in the fields of magnetism, electricity, optics and the like of perovskite oxide thin film material regulation and control. The method comprises the following steps: firstly, controlling the growth oxygen pressure of the perovskite oxide thin film, so that the thin film is subjected to lattice expansion and relaxation at high temperature and low oxygen pressure; after growth, the perovskite oxide film is subjected to low-temperature annealing in oxygen to fill oxygen vacancies and repair crystal lattices, so that the unit cell volume is reduced. The in-plane lattice is constrained by the substrate, so that the out-plane lattice constant is obviously shrunk. Finally, the obtained perovskite oxide thin film realizes anisotropic continuous regulation and control of the lattice structure and the physical property under the condition of keeping relatively high crystal quality. According to the invention, through an innovative'oxygen vacancy introduction-elimination 'process route, a new way is provided for regulating and controlling the anisotropy of the physical property of the perovskite oxide film.

The present invention provides a compound, calcium guanidine nitrate, and a birefringent calcium guanidine nitrate crystal, as well as a preparation method and use thereof. The chemical formula of the compound is [C(NH2)3]2Ca(NO3)4(H2O)2, the molecular weight is 444.33, and the compound is prepared by a solvent thermal method. The crystal chemical formula is [C(NH2)3]2Ca(NO3)4(H2O)2, the molecular weight is 444.33, and the crystal belongs to the monoclinic system with a space group of C 2 / c , the unit cell parameters are a =20.319(3)Å, b =6.5717(8)Å, c =14.2195(16)Å, α =90°, β =116.399(5)°, c =90°, the unit cell volume is 1700.8(4)Å 3 , with a transmittance range of 281-1600 nm and a birefringence index between 0.152 (1064 nm) and 0.23 (281 nm). Grown using a room-temperature aqueous solution method, the resulting birefringent crystals possess moderate mechanical hardness, are easily cut, polished, and stored, and are easy to grow under simple growth conditions. They are insoluble in water, non-deliquescent, and stable in air. They exhibit a wide transmittance range and birefringence, and can be used to fabricate polarization beam splitters, phase delay devices, and electro-optical modulators.

A system may include a container holder configured to (i) hold a container that houses a sample and (ii) rotate the container axially. A system may include a sensor having a sensing axis that passes through the container. A system may include a controller operatively coupled to the container holder and the sensor and configured to: control the container holder to axially rotate the container, control the sensor to capture sensor data of the container at a plurality of axial rotation angles, analyze the captured sensor data to determine a shape of a top surface of the sample; and based on the shape of the top surface, determine a sample volume.

The present application relates to the technical field of medical isotopes, and particularly relates to a thorium phosphonate framework material, a preparation method thereof and application of the thorium phosphonate framework material in a thorium-radium generator. The thorium phosphonate framework material has a chemical formula of Th2(TppmH4)2(H2O)4·8H2O, a monoclinic crystal structure, a space group of P21 / c, a unit cell parameter of a=14.4222-14.4242 Å, b=22.5950-22.5982 Å, c=22.1265-22.1301 Å, β=108.993-108.997°, and a unit cell volume of 6819.239 ų. The thorium phosphonate framework material is a solid particle for imprisoning thorium ions in a framework material, and when applied in a thorium-radium generator, the volume of the generator can be reduced, and the specific activity of a radium product can be improved; when thorium is decayed into radium, the radium can be released from the restraint of the framework material, and the radium can be directly eluted out of the framework material.

The invention relates to an ultraviolet nonlinear optical material CdF (C6H4NO2) (H2O) as well as a preparation method and application thereof. The crystal structure of the ultraviolet nonlinear optical material CdF (C6H4NO2) (H2O) belongs to a monoclinic system, the space group is P21, the cell parameters are as follows: # imgabs0 # imgabs1 # alpha = gamma = 90 degrees, beta = 114.506 (4) degrees, and the cell volume # imgabs2 # in the ultraviolet nonlinear optical material, Cd is coordinated with N of one (C6H4NO2)-, O of another (C6H4NO2)-, O of a water molecule and three F-to form a twisted [CdF3NO2] octahedron; the [CdF3NO2] octahedrons with two orientations are alternately arranged along a b axis to form a zigzag one-dimensional chain; the one-dimensional chains are mutually connected through (C6H4NO2) <-> to form a Wollan truss bridge-like structure. The unique structure promotes the optimal arrangement of [CdF3NO2] octahedron and (C6H4NO2)-in crystal lattices, so that the ultraviolet nonlinear optical material simultaneously has the characteristics of strong second harmonic generation (3.2 times of KDP), large birefringence (0.26 at546 nm) and deep ultraviolet transparency (Eg = 4.41 eV), and solves the long-standing challenges in the quantum optical technology.

The application discloses a kind of lattice data compression methods, systems and media for additive manufacturing, belong to additive manufacturing technical field, for solving the technical problem of the high efficiency compression method for lattice data needed urgently at present, to simultaneously improve the efficiency and precision of lattice structure modeling.Method includes: based on predefined unit cell type, construct unit cell volume field dataset;Construct neural network model based on auto-encoder architecture;Through the unit cell volume field dataset, the neural network model is trained, and a unit cell volume field prediction model is obtained;Through the unit cell volume field prediction model, the three-dimensional grid structure of target unit cell volume field data is extracted;The extracted three-dimensional grid structure is verified accurately, and the unit cell volume field prediction model is optimized and trained according to the verification result.

A printing gravure plate provided with a resin layer constituting a plate surface, the resin layer having a Shore A hardness of 30-90 degrees inclusive, the resin layer having a surface free energy of 10-35 mN / m inclusive, the resin layer being provided with cells on the plate surface, and the coefficient of variation of the cell volume of the cells for printing at the same ink concentration being 0.2 or less.

The application discloses a kind of single-cell metabolite in vivo in situ detection method, which comprises the following steps: establishing single-cell cytoplasm sampling volume / single-cell volume relative quantification method, obtaining the relative maximum cytoplasm extraction volume when maintaining single-cell survival;Build composite ion source, obtain the minimum sampling volume of 150 metabolites detected from single cytoplasm, obtain the sampling volume of single-cell cytoplasm in the in vivo in situ detection of metabolome;Through picoliter pump probe microscope fixed-point positioning puncture cell membrane, extract the cell cytoplasm of the above sampling volume;Metabolites in the extracted single-cell cytoplasm are ionized using composite ion source;Metabolites after ionization are detected by mass spectrometry.The application can realize multiple single-cell cytoplasm extraction of in vivo embryo during development, mass spectrometry metabolite detection, while ensuring cell survival, multiple sampling, while realizing accurate detection of trace metabolites in single cell.

This application discloses a fluorinated zirconium phosphate compound, its nonlinear optical crystal, its preparation method, and its applications. The chemical formula of the fluorinated zirconium phosphate compound is Zr(H2PO4)(HPO4)F·nH2O, where 0≤n≤3, and n is an integer. Its nonlinear optical crystal consists of a two-dimensional infinite layered structure formed by [ZrO5F] coordination polyhedra and [HPO4] and [H2PO4] tetrahedra connected by shared oxygen atoms, with interlayer crystal water molecules forming a hydrogen bond network. The nonlinear optical crystal is a non-centrosymmetric crystal; it belongs to the monoclinic crystal system; and its space group is [missing information - likely a specific space group or group]. I 2; The unit cell parameters of a nonlinear optical crystal are a =10.1200(5)Å, b =6.5653(3)Å, c =15.6899(8), β =92.340(5), unit cell volume V =1041.58(9)Å 3 This nonlinear optical crystal possesses deep ultraviolet transparency, a considerable frequency doubling response, and high birefringence, thus meeting the application requirements of nonlinear optical devices. Furthermore, the preparation method has the advantages of simple operation, low cost, low pollution, and low toxicity of the raw materials used.

To provide a method for harvesting recombinant proteins from a mammalian cell culture solution.SOLUTION: The method comprises culturing mammalian cells expressing a recombinant protein in cell culture medium for a predetermined time or until a desired cell density and / or packed cell volume is achieved, adding a cationic polymer and a non-ionic polymer to the cell culture medium to initiate flocculation, mixing the cell culture medium during the flocculation, allowing the flocculent to settle, and recovering the clarified supernatant.SELECTED DRAWING: None

The invention provides a cesium potassium fluoborate nonlinear optical crystal and a preparation method and application thereof, the chemical formula of the crystal is Cs4.8K5.2 B13O15F19, the molecular weight is 1582.8, the crystal belongs to a trigonal system, the space group is R3m, the cell parameters are as follows: a = 14.2606 (8), b = 14.2606 (8), c = 14.7689 (10), alpha = 90 degrees, beta = 90 degrees, gamma = 120 degrees, the unit cell volume is 2601.1 (3) 3, the number z of molecules in the cell is 3, the ultraviolet absorption edge is less than 200 nm, and the crystal has a nonlinear optical effect. And the frequency-doubled effect of the powder is about 0.17 times that of KDP (potassium dihydrogen phosphate). The crystal is grown by adopting a high-temperature solution method and a vacuum packaging method. The crystal has good chemical stability and can be used for manufacturing ultraviolet nonlinear optical devices.

The invention belongs to the technical field of preparation of high-performance positive electrode materials for sodium-ion batteries, and particularly relates to a porous spherical ferric pyrophosphate sodium-based positive electrode material synthesized on the basis of a sol-gel method. The invention provides a new strategy for coordinated regulation and control of high-entropy induced lattice distortion and a porous microsphere structure, and the micron-sized spherical rich-hole high-entropy positive electrode material Na4Fe2.75 (MgCrMnVCo) 0.05 (PO4) 2P2O7 (HE0.05-NFPP) is successfully prepared. High-entropy doped five-membered transition metal ions are introduced through a solution-gel method, on one hand, lattice distortion is induced through the high-entropy effect, the unit cell volume is enlarged, and a three-dimensional transmission channel of Na < + > is effectively widened; and on the other hand, the energy density is greatly improved through the porous microsphere structure, internal gaps of the porous microsphere structure serve as a buffer layer and an electrolyte storage area, and the problem of interface infiltration at the low temperature and volume expansion at the high temperature are effectively solved. The material shows excellent all-weather sodium storage performance, and the capacity retention rate reaches 87.1% after 10000 cycles at the ultrahigh rate of 50 DEG C at the normal temperature; at a high temperature of 60 DEG C, 82.9 mAh g <-1 > (50 C); more importantly, at the low temperature of-20 DEG C, the reversible capacity of 73.9 mAh g <-1 > can still be released at the multiplying power of 10 C. According to the invention, a solution with great industrial prospect is provided for developing a wide-temperature-range and fast-charging sodium-ion battery.

The present invention provides a compound yttrium lead rubidium borate and a yttrium lead rubidium borate nonlinear optical crystal and a preparation method and use thereof. The chemical formula of the compound is Rb7PbY2B 15 O 30 , molecular weight is 1625.45, it is prepared by solid phase synthesis or vacuum packaging method, the crystal chemical formula is Rb7PbY2B 15 O 30 , molecular weight is 1625.45, belongs to the trigonal system, and the space group is R 32, the unit cell parameters are a =13.4642(3)Å, b =13.4642(3)Å, c =15.2917(8)Å, α =90°, β =90°, c =120°, the unit cell volume is 2400.18 Å 3 , using melt method, high temperature melt method or vacuum packaging method to grow crystals, the Rb7PbY2B obtained by this method 15 O 30 Nonlinear optical crystal, the powder frequency-doubled effect of the crystal is about 1.3 times that of KH2PO4 (KDP), the ultraviolet cutoff edge is lower than 300 nm, and the physical and chemical properties are stable. It can be used as a short-wavelength ultraviolet nonlinear optical crystal in all-solid-state lasers.