361 results about "Crystalline materials" patented technology

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.

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.

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.

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 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.

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.

Methods are provided for hydrothermal synthesis of porous crystalline materials. The method generally comprises forming a solution of precursors and reagents in effective ratios for a porous crystalline material including a fluoride-containing mineralizer, and water-soluble oxidized disulfide oil. The solution is hydrothermally treated under effective conditions and for an effective time to synthesize porous crystalline materials.

The invention relates to the technical field of metal organic framework materials (MOF) and isotope separation, in particular to a functionalized metal organic framework material for water / heavy water separation and a preparation method and application thereof. The metal organic framework material is a porous crystal material which is formed by coordination self-assembly of metal ions and V-shaped organic ligands and has a periodic network structure; the V-shaped organic ligand is a V-shaped dicarboxylic acid organic ligand modified by an oxygen-containing functional group designed through topological functionalization. According to the metal organic framework material, through topological functional design of a V-shaped organic ligand, a space confinement channel and a high-density oxygen active site are integrated in the same MOF material, and an ideal model system is provided for identification of water isotopes; according to the metal organic framework material, the framework structure flexibility, the pore channel confinement effect and the molecular recognition capability can be synergistically regulated and controlled, so that efficient recognition and separation of water / heavy water are realized.

The invention belongs to the technical field of crystalline materials, and relates to a metal-organic coordination polymer crystal material, in particular to a nickel-based double-ligand coordination polymer crystal material as well as a preparation method and application thereof. The chemical formula of the nickel-based double-ligand coordination polymer crystal material is {[Ni (1, 4-bib) (BDC) (H2O) 2]. (1, 4-bib) 0.5. H2O} n, and the preparation method comprises the following steps: dissolving NiCl2. 6H2O, H2BDC and 1, 4-bib in a DMF / water mixed solution with a volume ratio of 1: 1, sealing, carrying out a solvothermal reaction, heating at a constant temperature of 90.0 DEG C for 3 days, and slowly cooling the system to room temperature to obtain a green bulk crystal G-Ni. The nickel-based double-ligand coordination polymer crystal material can be applied to Ag < + > recognition and antibiotic detection.

The invention discloses a polyacid-based metal viologen framework crystalline material as well as a preparation method and application thereof, and belongs to the technical field of heterogeneous catalytic materials. The crystalline material is synthesized in one step through a hydrothermal method, the molecular formula is Cu2 (H2O) 2 (L) 2 [PW12O40] [OH]. 2H2O, the crystalline material belongs to a monoclinic system, the space group is P21, the cell parameters are alpha = 90 degrees, beta = 114.208 (2) degrees and gamma = 90 degrees, and the structure of the crystalline material is determined through X-ray diffraction. According to the material, accurate compounding of polyacid clusters and metal viologen on the molecular level is achieved, an effective electron transmission channel is constructed, separation of photon-generated carriers is remarkably promoted, and excellent photocatalytic activity is shown. At the ambient temperature, the crystalline material can be used as a catalyst to efficiently degrade dye pollutants (such as methylene blue and rhodamine B) in a water body, the degradation rate within 60 minutes exceeds 90%, and the crystalline material has good cycle stability and structural durability.

The invention discloses a zirconium sulfonate metal organic framework material and a solvent-free preparation method and application thereof, and belongs to the technical field of crystalline materials, the chemical formula is [Zr (OH) 2 (H2O) 3 (NAP (COOH) 2 (SO3) 2], the ligand is 4, 8-disulfonyl naphthalene-2, 6-dicarboxylic acid (NAP (COOH) 2 (SO3H) 2), and the zirconium sulfonate metal organic framework material is prepared by the following steps: grinding and mixing 4, 8-disulfonyl naphthalene-2, 6-dicarboxylic acid and zirconyl nitrate to obtain a premix; and heating the premix to 130-140 DEG C, reacting for 36-48 hours, washing the product with ethanol after the reaction is finished, and centrifugally drying to obtain the zirconium sulfonate metal organic framework material. The zirconium sulfonate metal organic framework material is prepared through a solvent-free mechanical grinding synthesis method, the utilization rate of raw materials is increased through the solvent-free method, the yield of the zirconium sulfonate metal organic framework material is increased, and the obtained zirconium sulfonate metal organic framework material is excellent in proton conductivity.

A method for preparing an ultra-microporous metal-organic framework (MOF) and its application in propylene and propane adsorption separation, belonging to the technical field of crystalline materials, is disclosed. The MOF is derived from the organic ligands D-camphoric acid, 3-amino-1,2,4-triazole, and anhydrous zinc acetate via a solvothermal reaction in N,N-dimethylformamide and tetrafluoroboric acid. Gas adsorption studies have shown that this MOF has the potential to separate propylene and propane gas molecules.

The invention belongs to the technical field of organic light-emitting materials, and particularly relates to a step-by-step stimuli-responsive crystalline light-emitting material and a preparation method and application thereof. The crystalline luminescent material is a crystalline material based on a polysulfide aromatic hydrocarbon type compound, and the polysulfide aromatic hydrocarbon type compound is a compound based on a tetrathiobenzene mother nucleus. The compound does not have a photoluminescence discoloration property in a crystalline state, but has an obvious photoluminescence discoloration property after the crystallinity is reduced through force stimulation; and the wavelength and proportion of fluorescence / phosphorescence of the compound and the molecular orbital of an excited state can be controlled by adjusting related substituents, so that the optical property is adjustable. The high-crystallinity material prepared from the compound has a response effect on step-by-step stimulation of force and light, so that the high-crystallinity material can be applied to encryption anti-counterfeiting, information storage and the like. The application scenarios include currency anti-counterfeiting, certificate anti-counterfeiting, commodity package anti-counterfeiting, bill anti-counterfeiting, artwork anti-counterfeiting, electronic equipment anti-counterfeiting, logistics anti-counterfeiting, supply chain anti-counterfeiting and the like.

The invention belongs to the technical field of fuel cells, and discloses a Preyssler type polyacid crystalline material, the structural formula of the Preyssler type polyacid crystalline material is {[Cd5 (mu2-H2O) (H2O) 14 (H5P5W30O110) (btp) 4]. 8H2O} n, and the asymmetric unit of the Preyssler type polyacid crystalline material comprises 2.5 crystallographically independent Cd (II) ions, a half {P5W30} unit, 2 btp ligands, 8 coordinated water molecules and 4 free water molecules. The powder proton conductivity of the compound reaches 1.70 * 10 <-3 > S cm <-1 > under the conditions of 85 DEG C and 98% RH, the proton conductivity of a composite membrane formed by the compound and Nafion reaches 2.20 * 10 <-2 > S cm <-1 >, and large-scale commercial application of proton exchange membrane fuel cells can be achieved.

This application relates to the field of functional crystalline material preparation and microfluidic application technology, specifically disclosing a method and product for preparing formate crystals using core-shell microcapsules, including the following steps: (1) dissolving a solid alkaline raw material in a formic acid solution to prepare reaction solution a; (2) separately conveying polymer solution A and polymer solution B with phase separation characteristics, and reaction solution a, so that they are mixed at the intersection of microchannels to prepare dispersed phase b, which is then introduced into the assembly zone for phase separation assembly to form core-shell microcapsules; (3) the core-shell microcapsules are crystallized in a continuous temperature-changing crystallization zone to form formate solid; (4) the formate solid is collected, washed and dried sequentially to obtain the target product; (5) the oil layer is continuously extracted and returned to the assembly zone for recycling. The formate crystals prepared in this application not only have a large particle size, but also exhibit good size uniformity and morphological repeatability, and have the advantages of high throughput, green environmental protection, and simple operation.

The invention relates to the technical field of photoelectrocatalysis, in particular to a Mn (II) coordination polymer photoelectrode crystalline material and a preparation method and application thereof. The Mn (II) coordination polymer {[Mn2 (H2O) 6 (DODDA)]. 4H2O} n is obtained from an H4 (DODDA) organic ligand and manganese salt through a solvothermal method, an asymmetric unit comprises two Mn (II) ions in different coordination modes, adjacent Mn2 ions are bridged through carboxyl oxygen of the ligand to form straight chains, and two adjacent Mn2 straight chains are further bridged with Mn1 through the H4 (DODDA) ligand to form a transverse trapezoidal one-dimensional chain. A three-dimensional supramolecular structure is formed among the one-dimensional chains through the interaction of a large number of intermolecular hydrogen bonds. The Mn (II) coordination polymer shows better photoelectric property, has the potential of serving as a photoelectrode material, has good optical and electrical characteristics, can be used for constructing an efficient photoelectrocatalysis water decomposition system, and has application prospects in the aspects of photocatalytic hydrogen production, solar energy conversion and the like.

The application provides a ternary mixed metal organotin supertetrahedral chalcogenide cluster crystal state for resin catalysts and a synthesis method and application thereof. The chalcogenide cluster compound comprises at least a core and a periphery, the core comprises metal ions, and the periphery comprises organotin; the core and the periphery form a cluster structure; and the molecular general formula of the chalcogenide cluster compound is (RSn)4M4M'2S 16 wherein R is selected from n-butyl (nBu) and / or phenyl (Ph); M is selected from In or Ga; and M' is selected from Zn, Cd, Mn and Co. The synthesis method of the application has low requirements on the purity of raw materials, simple process, and the crystal state is easy to repeat, convenient for production. The yield of the chalcogenide cluster crystal state obtained by the synthesis method of the application can reach more than 45%. The chalcogenide cluster compound of the application can be used in the fields of photoelectric catalysis and nonlinear optics.

A toner comprising a toner particle comprising a binder resin, a crystalline material, and a silica particle, wherein a number average particle diameter D1 of the silica particle comprised in the toner particle is 400 to 3000 nm; the silica particle has a pointed portion; and the crystalline material comprises a compound having an ester group.

The present invention relates to crystalline solids comprising organic molecules and to the use of the crystalline materials in optical films and electro-optical devices.

A computer implemented method of characterising a crystalline material is disclosed. The method includes obtaining diffraction data and a predicted phase distribution from a crystalline material. Modified Rietveld refinement is performed on the diffraction data. This includes i) determining an R-weighted pattern value, Rwp, and an R-expected value, Re, for a structural model of the crystalline material and ii) determining a goodness-of-fit value based on Rwp, Re and a likelihood estimator for the structural model. The goodness-of-fit value is optimised by repeating steps i) and ii) for different structural models of the crystalline material. An optimised structural model that provides an optimised goodness- of-fit value is obtained and the method outputs a characterisation of the crystalline material based on the obtained optimised structural model. The likelihood estimator is based on the predicted phase distribution of the crystalline material and a measured phase distribution, which is based on the structural model.

The invention provides a two-dimensional chalcogenide, which is a crystalline material, and has a chemical formula of (NH4)2[Sn3S7]·(C4H13N3)1.41, cell parameters of a=b=13.2307(10) Å, c=19.335(2) Å, α=β=90°, and γ=120°, and space group of P63 / mmc. The invention further provides a method for preparing the two-dimensional chalcogenide and use thereof in the adsorption of iodine vapor. The two-dimensional chalcogenide of the present invention is capable of removing iodine vapor of various concentrations (as low as 400 ppm) over a wide range of temperatures (25° C.-75° C.), without desorption of iodine after standing for a long time.

The invention discloses a circularly polarized light-emitting supramolecular self-assembly crystalline material as well as a preparation method and application of the circularly polarized light-emitting supramolecular self-assembly crystalline material. The supramolecular assembly crystalline material comprises a three-dimensional structure, and the three-dimensional structure is connected through a hydrogen bond formed between a hydrogen atom in a chiral secondary structure unit and an oxygen atom in a sulfonic acid group of 4, 4 '-bis (2-sulfostyryl) biphenyl disodium CBS. The crystalline material disclosed by the invention shows excellent chiral optical properties, good solvent stability and a remarkable luminous asymmetric factor; the circularly polarized light-emitting film material prepared from the material can effectively realize transmission and amplification of crystal optical performance.

The invention relates to a composite structure comprising: - a seed layer of single-crystal III-V composite material extending in a principal plane, - a support substrate of crystalline material, on which the seed layer is deposited via a bonding interface, the support substrate comprising a peripheral rim devoid of a seed layer, the peripheral rim extending around an edge of the seed layer in the principal plane, - an intermediate layer of amorphous material, disposed between the seed layer and the support substrate and present on the peripheral rim, - at least one trench present in the peripheral rim, extending, along an axis normal to the principal plane, through the intermediate layer to the support substrate, or even into the support substrate, the trench being located less than 100 micrometers from the edge in the principal plane. The invention also relates to a method for manufacturing said structure.Figure to be published with the abbreviation: -.

The present invention relates to a preparation method and a use method of a molecular sieve for adsorbing formaldehyde. The preparation method includes the following steps: (1) preparing a carrier of the molecular sieve; (2) preparing a load of the molecular sieve; (3) preparing the molecular sieve. The use method includes the following steps: putting the prepared molecular sieve into the wastewater containing formaldehyde according to the amount of the wastewater containing formaldehyde in proportion, then adding dilute hydrochloric acid to the wastewater to adjust the pH, and then adjusting the reaction temperature, and reacting for 6d - 7d to achieve the purpose of adsorbing formaldehyde in the wastewater. As a crystalline material with a porous structure, the pore size of the molecular sieve can be accurately controlled at the molecular level, so it can selectively adsorb formaldehyde (HCHO) molecules with a smaller molecular weight. While the molecular sieve efficiently adsorbs formaldehyde, it retains the carbon source to the greatest extent and has high industrial application value.

The invention discloses a porous crystal material for air purification and a preparation method and application thereof. The crystal material belongs to a tetragonal system, the space group is P43212, the simple formula of the chemical structure is [Ni (Htbc) (fdpy) (H2O)], the molecular formula is C54H42NiN2O7, and the cell parameter is # imgabs0 # alpha = beta = gamma = 90 degrees; the prepared crystal material has a clear space structure and an accurate molecular formula, has good adsorption performance on harmful gas micromolecules, is used as a porous crystal material for removing harmful gas pollutants such as formaldehyde, acetylene, ethylene, halogenated hydrocarbon, nitric oxide, nitrogen dioxide, ammonia or sulfide and the like for air purification, and has a wide application prospect. The technology has the advantages of simplicity in operation, low cost, stable performance, suitability for large-scale production and the like.

There is described a method of manufacturing a substrate for an optoelectronic device. The method has the steps of: supporting a first layer of a first crystalline material on a second layer of a second crystalline material different from said first crystalline material thereby exposing crystalline defects at a surface of said first layer; etching said first layer using first etching conditions, at least some of said crystalline defects expanding into pores running from said surface of the first layer towards said second layer; and heating said first and second layers up to a first temperature for a first period of time within a given environment, said heating transforming said pores into nanovoids attracting at least some of said crystalline defects away from said surface. In some embodiments, the method has a step of reheating the layers or a step of forming a pore containing region within the first layer.

A quantum computing device includes an optical resonator having a resonant wavelength band. A crystalline material including a crystal defect is contained within the optical resonator. The crystal defect has a ground state and an excited state, which has an emission wavelength in the resonant wavelength band. A source electrode and a drain electrode are disposed on opposing sides of the crystal defect and configured to apply a first electric field in the crystalline material along a longitudinal axis. A gate electrode is disposed in proximity to the crystal defect and configured to apply to the crystalline material a second electric field transverse to the longitudinal axis. Control circuitry is configured to apply a first voltage between the source and drain electrodes to control a charge state of the crystal defect and to apply a second voltage to the gate electrode to tune the emission wavelength.