571 results about "Crystalline materials" patented technology

The invention relates to the technical field of fluorescence sensing development, in particular to a Cd (II)-based metal organic framework crystalline material as well as a preparation method and application thereof. The chemical formula of the Cd (II)-based metal organic framework crystalline material is {[Cd3 (H2O) 2 (DMA) 2 (5-CMOIA) 2]. 6 / 5H2O} n, the organic framework material is characterized by an X-ray single crystal diffractometer, and the result shows that the organic framework material is crystallized in a triclinic system P-1 space group, the asymmetric unit of the organic framework material is composed of three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions, three Cd (II) ions and three The complex is composed of two deprotonated (5-CMOIA) 3-ligands, two coordinated DMA solvent molecules, two coordinated water molecules and six fifths of crystal water molecules. The solid fluorescence spectrum of the Cd (II)-based metal organic framework crystalline material is measured, the fluorescence response of the Cd (II)-based metal organic framework crystalline material to metal ions in a solution is explored, and the result shows that the Cd (II)-based metal organic framework crystalline material can effectively recognize Hg < 2 + > from different ions and can be applied to the field of fluorescence sensing.

Crystal growth systems with a baffle are provided. In one example, a crystal growth system for growing crystalline material, the crystalline material including silicon carbide, includes a seed holder configured to hold a silicon carbide seed crystal. The seed crystal provides a growth surface for growth of the silicon carbide crystalline material. The system includes a crucible at least partially defining a crystal growth chamber. The system includes a source material. The system includes one or more baffles within the crystal growth chamber and spaced apart from the source material. The one or more baffles include one or more apertures defined through the one or more baffles. The baffle includes a long dimension that is non-perpendicular to the growth surface of the seed crystal.

The invention relates to the technical field of crystal material preparation, in particular to a ternary layered selenide Ge3Sb4Se7 semiconductor material and a preparation method thereof. The preparation method of the ternary layered selenide Ge3Sb4Se7 semiconductor material comprises the following steps that S001, germanium powder, antimony powder and selenium powder with the molar ratio being 3: 4: 7 serve as raw materials, the temperature is increased to 900-950 DEG C under the vacuum condition, and heat preservation is conducted for 12-24 h at the temperature; s002, after heat preservation is finished, the temperature is reduced to 475-500 DEG C at the cooling rate of 1-5 DEG C / min, and heat preservation is conducted for 3-5 days at the temperature; and after heat preservation is finished, furnace cooling or quenching cooling is performed to reach the room temperature, and the layered ternary selenide single-phase material with the chemical formula being Ge3Sb4Se7 is obtained. The ternary layered selenide Ge3Sb4Se7 semiconductor material prepared by the invention is a single-phase material and has the characteristics of low thermal conductivity and low resistivity, so that the ternary layered selenide Ge3Sb4Se7 semiconductor material has application potential in the fields of thermoelectric devices, photoelectric detection and the like.

A method of manufacturing a battery cathode for a solid state battery is provided. The method includes generating a plasma remote from one or more targets suitable for forming cathodes, such as LiCoO2, exposing the plasma target or targets to the plasma, thereby generating sputtered material from the target or targets, and depositing sputtered material on a first portion of a substrate, thereby forming crystalline material, such as LiCoO2 on the first portion of the substrate.

The invention belongs to the technical field of crystalline materials, particularly relates to a calcium-based metal organic framework material, a preparation method thereof and application of the calcium-based metal organic framework material in carbon dioxide trapping, and provides a calcium-based metal organic framework material formed by using 2, 5-pyrazine dicarboxylic acid as a ligand and calcium salt through a solvothermal method. The calcium-based metal organic framework material can generate transformation of unit cell parameters when removing guest molecules and adsorbing CO2 molecules, the metal-organic framework material is constructed by taking acetonitrile as a template agent, and due to the similarity of acetonitrile and CO2 molecules, the MOF has potential application in the aspect of CO2 trapping.

The utility model discloses a crystallization device which comprises a mother liquor tank, an oscillation temperature crystallization pipe and a crystallization tank, the oscillation temperature crystallization pipe comprises a plurality of low-temperature crystallization pipes and a plurality of high-temperature crystal dissolving pipes, the plurality of low-temperature crystallization pipes and the plurality of high-temperature crystal dissolving pipes are alternately connected, and the low-temperature crystallization pipes are arranged at the heads and the tails of the low-temperature crystallization pipes, and the mother liquor tank is connected with the first low-temperature crystallization pipe in the oscillation temperature crystallization pipe; and the crystallization tank is connected with the last low-temperature crystallization pipe in the oscillation temperature crystallization pipes. According to the crystallization device provided by the embodiment of the utility model, mother liquor to be crystallized is finally converged to the crystallization tank from the mother liquor tank through the oscillation temperature crystallization pipes of the low-temperature crystallization pipes and the high-temperature crystal dissolving pipes which are alternately arranged, and the mother liquor to be crystallized can be continuously and sequentially cooled and heated by utilizing the device, and is crystallized by utilizing the oscillation temperature; and crystalline substances can be rapidly obtained.

The invention relates to the technical field of fluorescence sensing, in particular to a preparation method and application of an Nd (III)-based hydrogen bond organic framework crystalline material. According to the Nd (III)-based hydrogen bond organic framework crystalline state material, Nd (III) serves as a central metal ion and is coordinated with 9 oxygen atoms, and adjacent Nd (III) are connected through H2 (4-CPCA) ligands to form a one-dimensional chain structure. One-dimensional chains are bridged through H2 (4-CPCA) ligands to form a two-dimensional double-layer planar structure, and two-dimensional surfaces are further stacked through the interaction of a large number of intermolecular hydrogen bonds to form a three-dimensional supramolecular structure. The Nd (III)-based hydrogen bond organic framework crystalline material has good fluorescent property and stability, and can be applied to the field of fluorescence sensing.

The invention belongs to the technical field of fluorescent active substance development, and particularly relates to a cadmium (II)-based metal organic framework crystalline material as well as a preparation method and application thereof. The molecular formula of the cadmium (II)-based metal organic framework crystalline material is {[Cd3 (Br-BDC) 3 (BMIP) 2]. 2H2O} n, cadmium (II) ions serve as connecting nodes, BMIP and H2 (Br-BDC) ligands serve as bridging ligands to be in mutual bridging to form a three-dimensional space structure, Cd-O secondary structural units are contained in the structure, three Cd atoms form a trinuclear Cd-O cluster structure through the Cd-O secondary structural units, and the Cd (II)-based metal organic framework crystalline material has the structural formula shown in the description. The Cd1 atom and the Cd1 # atom are in mirror symmetry. The divalent cadmium ion fluorescence sensing material can be prepared by adopting a one-pot solvothermal reaction; the preparation method has the advantages of simple process, convenience in operation, high yield, good reproducibility and the like; the cadmium (II) fluorescent sensing material disclosed by the invention is relatively high in fluorescence emission spectrum intensity and can be applied to the fields of molecular fluorescent probes, metal ion detection and the like.

A method for realizing single-crystalline regeneration of a spent positive electrode material by using a vacuum cracking method. The method comprises: fully mixing a spent polycrystalline ternary positive electrode material of a lithium ion battery with nickel stearate and a lithium salt, melting same, and then calcining same in vacuum so as to obtain a regenerated single-crystalline ternary positive electrode material. The present method not only compensates the loss of lithium of a spent single-crystalline ternary positive electrode material, but also converts insoluble residual Ni on the surface of the single-crystalline material during the "cracking" process of nickel stearate into LiNiO2 capable of providing discharge capacity, thus allowing the regenerated positive electrode material to exhibit more excellent electrochemical properties, and further reducing costs. The method is simple and easy to operate, and has modest requirements on regeneration reaction temperature, and while not needing long-time high-temperature calcination, the method can be used for simultaneously carrying out two processes polycrystalline cracking into single crystalline and lithium replenishment, thus involving low energy consumption, and being easy to popularize.

Optical device films and methods of forming optical device films having a RMS surface roughness less than about 2.2 μin and a refractive index greater than 2.0 are provided. In one embodiment, an optical device film is provided and includes a crystalline or nano-crystalline material having a refractive index greater than 2.0. A top surface of the optical device film has a root-mean-square (RMS) surface roughness less than about 2.2 microinches (μin).

A method of analyzing semiconductor wafers includes capturing a first image of a first crystalline material, etching a first surface of the first crystalline material to delineate etch defects in the first crystalline material, and capturing a second image of first crystalline material after etching the first surface of the first crystalline material. Based on the second image, labels of etch defects delineated in the first surface of the first crystalline material are generated. The first image and the labels of etch defects are spatially coordinated to form a defect map identifying one or more defects in the first image based on the delineated etch defects, and based on the defect map and nondestructive data obtained from a second crystalline material, defects in the second crystalline material are identified.

The invention provides a device and a method for drawing inorganic crystal and amorphous materials by using a graphite heater, and belongs to the technical field of nano materials. The technical problems in the drawing process of inorganic crystal materials and inorganic non-crystal materials are solved. Inorganic crystal materials and inorganic non-crystal materials are drawn by using a method different from a CO2 laser for the first time. The drawing process comprises the following steps: (1) designing a soft pulling force parameter, and additionally arranging an adjustable soft pulling force in a heating process, so that the shape and the size of a drawn product have a more flexible adjusting space; and (2) a drawing process control mechanism of one of'displacement ', 'heating time' and'speed 'is adopted, so that the requirements of preparing different micro-nano probes and ultramicro electrodes are met.

Apparatuses and methods are provided for an optical frequency converter configured to double or have a carrier frequency of an input optical signal. The input optical signal provided to the optical frequency converter is a higher order mode than a mode of the output optical signal. The optical frequency converter comprises a core, cladding material, and a substrate. The core includes a first core portion of non-linear crystalline material which is non-centrosymmetric, and a second core portion and a third core portion of the non-linear crystalline material each of which is centrosymmetric. The first, the second, and the third core portions are coplanar with and adjacent to the first core portion between the second and the third core portions.

The invention relates to a preparation method of a Cu-Co bimetallic semi-crystalline material and application of the Cu-Co bimetallic semi-crystalline material to adsorption of dye, and belongs to the field of preparation of nano materials and environmental materials, the Cu salt and the Co salt of the same type are weighed, the mass ratio is 1: 3-3: 1, the Cu salt and the Co salt are mixed in an ethanol solution, and the Cu salt and the Co salt are promoted to be dissolved and fully mixed through ultrasonic waves to be named as a solution A; adding an organic ligand into deionized water, and enabling the concentration of the organic ligand to be 0.2 mol / L by utilizing an auxiliary reagent under an ultrasonic condition, so as to obtain a solution B; mixing the solution A and the solution B according to the volume ratio of 1: 2, and stirring to a flowable liquid state under the condition of constant-speed stirring, so as to obtain a substance C; centrifugally collecting and drying the C substance to obtain a dried Cu-Co bimetallic semi-crystalline material; the preparation method of the Cu-Co bimetallic semi-crystalline material is simple, convenient, rapid and low in energy consumption, and the synthesized Cu-Co bimetallic semi-crystalline material has a multi-element pore structure, a large specific surface area and multi-element active sites and is high in adsorption capacity.

The invention belongs to the technical field of crystalline materials, and particularly relates to a zinc amino acid complex crystal material and a preparation method and application thereof, the chemical molecular formula is [Zn (bib) (NCLA)] n, and used ligands are 1, 4-bis (1-imidazolyl) benzene and N-carbobenzoxy-L-aspartic acid. The zinc amino acid complex crystal material is novel in structure, two carboxyl groups-COO <-> in deprotonated ligand NCLA < 2-> are simultaneously connected with Zn (II) to form a chain structure, and adjacent chains are connected through crossed bib ligands to form a 2D layered structure. Weak intermolecular hydrogen bond interaction exists between the 2D layers, so that a three-dimensional frame structure is formed. The zinc amino acid complex crystal material can be used for identifying solvent molecules, metal ions and antibiotics.

The invention discloses a self-leveling penetrating crystallization waterproof coating and application thereof. The waterproof coating comprises component A and component B, wherein component A comprises water and polyvinyl alcohol, and component B comprises a base material and an active crystallization chemical substance. In terms of mass percentage, the polyvinyl alcohol in component A is 10%-20%, and component A does not contain other film-forming resins except polyvinyl alcohol, and component B further comprises 0.1%-0.8% of tartaric acid. The waterproof coating can achieve sufficient penetration of active crystallization substances independently without a maintenance process by self-locking water, can improve the waterproof performance of a concrete base layer and can form a waterproof layer itself, can seal a ventilation channel between concrete and an outside, prevent the generation of bubbles during the construction of a next waterproof or decorative coating, and has excellent self-leveling performance, can easily achieve a leveling function for a concrete foundation, for example, a waterproof coiled material can be directly laid thereon without additional operations such as grinding and leveling.

Crystal growth systems for growing crystalline material comprising silicon carbide are provided. In one example, the crystal growth system includes a crucible at least partially defining a crystal growth chamber. The crystal growth chamber has a plurality of zones, each zone associated with a different processing profile. The system includes a silicon carbide crystal. The system includes a source material.

The invention discloses self-repairing and rapid-repairing cement-based mortar and a preparation method thereof, and belongs to the technical field of building materials. The self-repairing and rapid-repairing cement-based mortar is prepared from the following raw materials: 5500-6500 parts of a composite cementing material; 200 to 650 parts of an inorganic permeable crystalline material; 1500 to 3500 parts of a filling material; 307 to 510 parts of a rapid hardening component; 2-5 parts of a moisturizing and thickening component; 150 to 250 parts of a toughening and softening component; and 6-10 parts of a water reducing agent. The preparation method of the self-repairing and rapid-repairing cement-based mortar comprises the following steps: preparing the raw materials according to the proportion, uniformly mixing, adding the mixing water, and uniformly mixing to obtain the self-repairing and rapid-repairing cement-based mortar. The self-repairing quick-repairing cement-based mortar is efficient in water resistance and leaking stoppage, quick in setting and hardening and high in hour strength and has the function of silt; and a good self-repairing capability is achieved for microcosmic cracks of 0.1 mm.

The invention relates to the field of temperature measurement, in particular to a metal organic framework crystal material and a preparation method and application thereof. The invention provides a metal organic framework crystal material, and the crystal material is a crystal material which is formed by connecting a connector 2, 6-bis (2, 4-dicarboxyphenyl)-4-(phenyl) pyridine and Zn (II) and has a periodic three-dimensional network structure. The afterglow characteristic of the metal organic framework crystal material provided by the invention is still kept under the condition that the particle size is relatively small, and the energy charging time is relatively short; meanwhile, the decay time of the metal organic framework crystal material is second-level, the time / color of afterglow decay can be recorded by a camera only needing a common ultraviolet light semiconductor light source as a light source, and the time / color is used as a basis for temperature judgment, so that the temperature measurement cost is greatly reduced, and the measurement process is simplified; in addition, the metal organic framework crystal material can be synthesized at the temperature of 120 DEG C or below, so that the production cost and danger are reduced.

The invention belongs to the technical field of crystalline materials, and particularly relates to a cadmium complex crystal material as well as a preparation method and fluorescent recognition application thereof. According to the invention, Cd < 2 + > is selected as a central metal ion, a flexible polycarboxylic acid ligand 4, 4 '-((5-carboxyl-1, 3-phenylene) bis (oxy)) dibenzoic acid is selected, and two cadmium complexes Cd-1 and Cd-2 with novel structures are synthesized. The prepared Cd-1 and Cd-2 can rapidly detect Fe < 3 + > and Tb < 3 + >, and can be used as a novel fluorescent recognition sensor. The material can be used in the fields of environmental protection, quality inspection and the like, and has important significance in protecting the environment, improving food quality safety and the like.

To continue to seek improved SiC wafers with larger dimensions and related solid-state devices while overcoming challenges associated with conventional SiC wafers.SOLUTION: Silicon carbide (SiC) materials including SiC wafers and SiC boules and related methods are disclosed that provide large dimension SiC wafers with reduced crystallographic stress. Growth conditions for SiC materials include maintaining a generally convex growth surface of SiC crystals, adjusting differences in front-side to back-side thermal profiles of growing SiC crystals, supplying sufficient source flux to allow commercially viable growth rates for SiC crystals, and reducing the inclusion of contaminants or non-SiC particles in SiC source materials and corresponding SiC crystals. By forming larger dimension SiC crystals that exhibit lower crystallographic stress, overall dislocation densities that are associated with missing or additional planes of atoms may be reduced, thereby improving crystal quality and usable SiC crystal growth heights.SELECTED DRAWING: Figure 1B

A target for heavy ion or electron bombardment is contemplated as is a method of its preparation. In that method, a) liquid target solution of a target metal salt dissolved in water is deposited into the bottom of a metal target capsule having an open top, and b) heated within the target capsule to form a crystalline material. Steps a) and b) are repeated until the crystalline material contains a target amount of target salt. The target capsule is then heated until the weight of the target capsule remains constant. To mitigate the formation of salt creep during the preparation, the liquid target solution can contain about 2 to about 20 percent v / v of a C2-C4 polyol, or the inside surface of the target capsule is coated with a hydrophobic film that provides a contact angle with water of about 70 to about 1300 prior to liquid deposition.

The invention belongs to the technical field of crystalline materials, and particularly relates to a nickel-based complex crystal material as well as a preparation method and application thereof. The nickel-based complex crystal material is characterized in that a ligand of the nickel-based complex crystal material is 1, 4-bis (imidazole-1-yl) benzene; the auxiliary agent is L-glutamic acid; the metal salt is Ni (CH3COO) < 2.4 > H2O or NiCl2. 6H2O; when the metal salt is NiCl2. 6H2O, the chemical molecular formula of the nickel-based complex crystal material is [Ni (bib) 2 (HCOO) 2] n, and when the metal salt is Ni (CH3COO) 2.4 H2O, the chemical molecular formula of the nickel-based complex crystal material is [Ni (bib) 1.5 (HCOO) 2 (H2O)] n, and the nickel-based complex crystal material can be used for identifying metal ions and solvents.

The invention relates to the technical field of fluorescence sensing, in particular to a praseodymium (III) metal organic framework crystalline material and a preparation method and application thereof. According to the praseodymium (III) metal organic framework crystalline state material, Pr (III) is used as a central metal ion and forms eight coordination with eight oxygen atoms of six (4-CPCA) 2-ligands. And adjacent Pr (III) are connected through 4-CPCA < 2-> bridging to form a one-dimensional annular chain. And the one-dimensional chains are further bridged and topologically connected through a (4-CPCA) 2-ligand to form a three-dimensional structure. The praseodymium (III) metal organic framework crystalline material has good fluorescent property and stability, and can be applied to the field of fluorescence sensing.

The toner is a toner including a toner particle comprising a binder resin, a crystalline material, wherein, when a ratio of an area occupied by the crystalline material in a toner surface observed with a scanning electron microscope after ruthenium-staining the toner under a specific condition (1) is represented by S1 (%), a ratio of an area occupied by the crystalline material in the toner surface observed with the scanning electron microscope after ruthenium-staining the toner under a condition (2) is represented by S2 (%), and a dispersion diameter of a plurality of domains formed of the crystalline material on the toner surface observed with the scanning electron microscope after the ruthenium-staining the toner under the condition (2) is represented by R2 (nm), the following expressions (1), (2), and (3) are satisfied.0.0≤S1≤0.5(1)1.≤S2≤10.(2)20≤R2≤200(3)

Systems and methods for defect mitigation in silicon carbide crystal growth systems are provided. In an aspect, an example method includes providing a crystalline material in a first zone of the crystal growth chamber. In some implementations, the example method includes providing a silicon carbide vapor source material in a second zone of the crystal growth chamber. The example method includes providing an etching agent in the crystal growth chamber. The example method includes controlling a temperature gradient in the crystal growth chamber such that a first temperature in the first zone is greater than a second temperature in the second zone to implement an etching process on the crystalline material in the crystal growth chamber.

The invention discloses a self-leveling capillary crystalline waterproof coating and a preparation method thereof, the waterproof coating comprises a component A and a component B, the component A comprises water and polyvinyl alcohol, the component B comprises cement, quartz sand, an active crystalline chemical substance and tartaric acid, and the component A and the component B are respectively prepared during preparation; uniformly mixing the components in the component A to obtain the component A; uniformly mixing the components in the component B to obtain the component B, and mixing the component A and the component B during use; the waterproof coating can independently complete sufficient permeation of active crystalline substances through self-water-locking without a maintenance process, can improve the waterproof performance of a concrete base layer, can form a self-waterproof layer, can seal a ventilation channel between concrete and the outside, prevents construction bubbles of a next waterproof or decorative coating from being generated, and improves the waterproof performance of the concrete base layer. In addition, the leveling agent has excellent self-leveling performance and can easily achieve the leveling function on a concrete foundation, for example, waterproof coiled materials can be directly laid on the leveling agent, and extra operations such as polishing and leveling are not needed.

The invention belongs to the technical field of crystalline materials, and particularly relates to a chromium phosphonate metal organic framework material as well as a solvent-free preparation method and application thereof. The chemical formula is [Cr (H2BPD) 1.5]. The preparation method comprises the following steps: mixing an organic ligand p-phenylene diphosphonic acid and chromium chloride hexahydrate, grinding, carrying out a heating reaction, after the reaction is completed, spontaneously cooling to room temperature, repeatedly washing with ethanol until a supernatant is in a colorless and transparent state, and carrying out vacuum drying to obtain the light green chromium phosphonate metal organic framework material. The chromium phosphonate metal organic framework material can be applied to proton conduction.

The invention relates to the technical field of fluorescence sensing, in particular to a Zn (II)-based metal organic framework crystalline material as well as a preparation method and application thereof. Zinc chloride and H3 (5-COIA) ligands are added into DMA, pH is adjusted, the Zn (II)-based metal organic framework material with a novel structure is prepared through a solvothermal method, the preparation method has the advantages of being convenient to operate, high in yield, good in reproducibility and the like, and the Zn (II)-based metal organic framework material has very strong fluorescence emission performance and good water stability and can be used for preparing a fluorescent material with a novel structure. It has been studied to selectively and sensitively detect La3 + ions in aqueous solutions, thereby further protecting human health and the environment from these contaminants.