97results about How to "Avoid heat treatment" patented technology

Methods and systems for label-free multiple analyte sensing, biosensing and diagnostic assay chips consisting of an array of photonic crystal microcavities along a single photonic crystal waveguide are disclosed. The invention comprises an on-chip integrated microarray device that enables detection and identification of multiple species to be performed simultaneously using optical techniques leading to a high throughput device for chemical sensing, biosensing and medical diagnostics. Other embodiments are described and claimed.

The invention discloses a spherical silicon-oxygen-carbon negative electrode composite material, which is of a three-layer structure comprising an inner layer, an intermediate layer and an outer layer, wherein the inner layer is an SiOx/graphite substrate; the intermediate layer is an amorphous carbon coating layer; the outer layer is a carbon nanotube coating layer; the mass of the inner layer SiOx/graphite substrate accounts for 80%-90% of total mass of the spherical silicon-oxygen-carbon negative electrode composite material; the mass of the intermediate layer amorphous carbon accounts for 5%-10% of total mass of the spherical silicon-oxygen-carbon negative electrode composite material; and the outer layer carbon nanotube accounts for 5%-10% of total mass of the spherical silicon-oxygen-carbon negative electrode composite material. The grain diameter of the adopted SiOx substrate is smaller than 5 microns; the grain diameter is relatively small; intercalation and deintercalation of active substances are facilitated; higher specific capacity can be obtained; meanwhile, a dispersing agent is added when an SiOx sample is ground; and condition that the SiOx with a relatively small grain diameter is agglomerated in quantity to affect the performance is prevented.

The invention relates to a method for preparing microcrystalline cellulose at low temperature. The method is characterized by comprising the following steps: (1) completely soaking the cellulose raw material in a soaking solvent, wherein the soaking solvent is water or an acid solution with mass percent concentration not over 15wt% or an oxide solution with mass percent concentration not over 5wt%; (2) freezing the cellulose raw material after the soaking treatment in the step (1), and grinding; (3) performing high-speed shear treatment on the cellulose powder obtained by the grinding in the step (2), and performing aftertreatment on the product after the high-speed shear treatment to obtain the microcrystalline cellulose. The method for preparing microcrystalline cellulose at low temperature provided by the invention can obtain microcrystalline cellulose with different polymerization degrees lower than 350 and relatively high crystallization degree; high-temperature treatment process can be avoided, the energy consumption is low, and the process is simple and green and environment-friendly.

The invention discloses a silica-based perovskite heterojunction solar cell and a preparation method thereof. The silica-based perovskite heterojunction solar cell includes an aluminum electrode, a gold conducting film, perovskite, aluminum oxide, an N-type silicon wafer and a silver electrode arranged from top down, wherein the perovskite is CH3NH3PbI3. Compared with a traditional silica-based heterojunction solar cell material, silica-based perovskite heterojunction solar cell provided by the invention has better electric and optical performance. According to the invention, as to a transmitting electrode of the silica-based perovskite heterojunction solar cell, perovskite can absorb visible light while silicon can absorb infrared light, so that segmented light absorption can be realized and utilization of sunlight becomes more adequate. The invention also discloses a preparation method of the silica-based perovskite heterojunction solar cell.

The invention relates to a method for preparing an aluminum-doped zinc oxide (AZO) transparent conducting film, which comprises the following steps: preparing a spin coating solution from a low-boiling solvent, a stabilizer and a hydrolyzable raw material, carrying out spin coating on a hydrophilic substrate, aging, and carrying out heat treatment and atmosphere annealing to obtain the AZO transparent conducting film. The method provided by the invention has the advantages of accessible raw materials, low cost and environment friendliness, and is simple to operate and suitable for flexible substrates. The invention also relates to an AZO transparent conducting film prepared by the method. The AZO transparent conducting film has the advantages of excellent compactness, low resistivity, adjustable doping rate and film thickness and excellent properties, and has wide application prospects in the field of photoelectricity.

A tea product is prepared from fresh tea leaves through pretreaitng, grinding, adding water, squeezing juice at 20-80 deg.c and 30-50 kg/sq.cm of pressure, filteirng to obtain filtrate, grinding the dregs, adding water, squeezing juice in same condition, filtering to filtrate, merging the filtrate to its liquid tea product, drying until its water content is 20-80 % to obtain tea cream, and spray drying to obtain powdered tea product. Its advantages are less loss of nutrients etc.

A method for fabricating composite light-weighted glass ceramics, suitable for use as, e.g. mirror blanks or microlithography stages, at low temperatures is disclosed. Component pieces are polished then joined at low temperature using a silicate-containing joining liquid. Assembly is then performed in such a way that the joining liquid forms an interface between each component. After a period of low or slightly elevated temperature curing, rigid joints are formed throughout and the composite is dimensionally, vibrationally, and temperature stable and can withstand tensile stresses >4000 psi. The room-temperature cured composite can be heat treated using a slow, systematic temperature increase to dehydrate the joints. A sealing coating may optionally be provided to prevent excess dried joining liquid from flaking off the formed joint.

A method for building two-dimension orderly distributed Si quantum spot graphic nanameter structure is to process a phase-shift grating form board on the film of a-Si or a-SiNx: H/a-Si: H/a-SiNx: H then to crystallize it by laser interference, the laser beam arrives at surfaces of a-Si film or a-SiNx: H/a-Si: H/a -SiNx: H via the form board to form beam spots of two dimension periodic distribution of the energy density to make a -Si: H film to realize localized crystallization, that is to form nanometer Si quantum spot array of two-dimension space orderly distributed in the film.

Methods and systems for label-free multiple analyte sensing, biosensing and diagnostic assay chips consisting of an array of photonic crystal microcavities along a single photonic crystal waveguide are disclosed. The invention comprises an on-chip integrated microarray device that enables detection and identification of multiple species to be performed simultaneously using optical techniques leading to a high throughput device for chemical sensing, biosensing and medical diagnostics. Other embodiments are described and claimed.

The invention relates to a method for producing a steel tube, wherein a steel sheet (4) is formed into tubular body (1.2) having a round cross section in a bending process (a), welded in a subsequent welding process (b) along the longitudinal edges facing each other for producing a continuous longitudinal seam, and then subjected to a stress-relieving treatment. The production quality is improved, with reduced production time, in that the stress-relieving treatment is performed in a process (c) for concentrically truing along the circumference in at least one segment relative to the longitudinal axis thereof, while cold forming by compression (FIG. 1). The mechanical technological properties of the material are also thereby improved.

A method of manufacturing a coated reinforcing fiber for use in Ceramic Matrix Composites, the method comprising pre-oxidizing a plurality of silicon-based fibers selected from the group consisting of silicon carbide (SiC) fibers, silicon nitride (Si₃N₄) fibers, SiCO fibers, SiCN fibers, SiCNO fibers, and SiBCN fibers at between 700 to 1300 degrees Celsius in an oxidizing atmosphere to form a silica surface layer on the plurality of silicon-based fibers, forming a plurality of pre-oxidized fibers; applying a rare earth orthophosphate (REPO₄) coating to the plurality of pre-oxidized fibers; and heating the plurality of REPO₄ coated pre-oxidized fibers at about 1000-1500 degrees Celsius in an inert atmosphere to react the REPO₄ with the silica surface layer to form a rare earth silicate or disilicate. The pre-oxidizing step may be 0.5 hours to about 100 hours. The heating step may be about 5 minutes to about 100 hours.

The invention aims at solving the technical problems that the environment is polluted, the production cost is high and the product can not be used as the color micro-surface cementing material due to poor performance in the process for preparing the existing color modified emulsion discolored asphalt, and provides a method for preparing color liquid SBS modified emulsion resin which consists of the following raw materials: light color resin emulsion, liquid SBS modifier, inorganic pigment 307 chrome molybdenum red pigment or SGC-M chrome green pigment, pigment dispersant polycarboxylic acid sodium salt or polyacrylic acid ammonium salt. The method comprises the steps of: when in preparation, adding the raw materials into a reactor, maintaining the temperature of the reactor within 20 DEG C to 30 DEG C, adding phosphoric acid to adjust the pH value of the system to be 2.5-4.5, uniformly stirring the system and then obtaining the high-performance color liquid SBS modified emulsion resin. The method has the advantages of simple preparation process, low production cost and non-toxic harmless performance, can be constructed at room temperature, and can prepare the high-performance color micro-surface cementing material to be used for heavy traffic roads by choosing appropriate modifier.

The invention discloses a preparation method of a nitrogen-containing iron-based amorphous nanocrystalline soft magnetic alloy. The preparation method comprises the following steps that an iron-basedamorphous soft magnetic alloy is subjected to plasma nitriding to obtain a nitrogen-containing iron-based amorphous soft magnetic alloy with a completely amorphous structure, and annealing treatment is carried out to obtain the nitrogen-containing iron-based amorphous nanocrystalline soft magnetic alloy, wherein the temperature for plasma nitriding is 100-400 DEG C, and the nitriding time is 10-60min. The preparation method has the characteristics of being low in nitriding temperature and short in nitriding time, the problem of iron-based amorphous crystallization in the nitriding process issolved, and the problems that the iron-based amorphous soft magnetic alloy is poor in toughness and uneasy to machine after nitriding are solved. The invention further discloses the nitrogen-containing iron-based amorphous soft magnetic alloy and the nitrogen-containing iron-based amorphous nanocrystalline soft magnetic alloy which are prepared by using the preparation method. The crystal grain size of nanocrystalline is 10-15 nm, and the saturation magnetic induction intensity is 1.48-1.74 T.

The invention provides chilli oil and chilli sauce as well as preparation methods of the chilli oil and the chilli sauce. The preparation methods comprise the steps of selecting chillies, pickling and fermenting the chillies, grinding the chillies and cooking the chillies, thus preparing the chilli oil and the chilli sauce. The chilli oil, the chilli sauce and the preparation methods have the advantages that as the chilli oil and the chilli sauce are simultaneously prepared by adopting the method of fermentation, the raw materials are fully utilized; meanwhile, the chilli sauce is hot, sweet and fresh and is complete in color, aroma and taste.

The present invention relates to the application of at least partially bainitic or interstitial martensitic heat treatments on steels, often tool steels or steels that can be used for tools. The first tranche of the heat treatment implying austenitization is applied so that the steel presents a low enough hardness to allow for advantageous shape modification, often trough machining. Thus a steel product is obtained which can be shaped with ease and whose hardness can be raised to a higher working hardness with a simple heat treatment at low temperature (below austenitization temperature).

The invention belongs to the field of organic waste resource recovery and fertilizer production and in particular relates to an organic liquid fertilizer based on concentrated biogas slurry as well as preparation and application methods thereof. The preparation method comprises the following steps: (1) preparing an organic basic liquid fertilizer liquid: carrying out dispersive mixing on concentrated biogas slurry and phosphate fertilizers, thus obtaining the organic basic liquid fertilizer liquid; (2) preparing an organic basic nitrogen fertilizer liquid: carrying out dispersive mixing on concentrated biogas slurry and nitrogen fertilizers, thus obtaining the organic basic nitrogen fertilizer liquid; (3) preparing an organic basic chelate/complex trace element fertilizer liquid: carrying out dispersive mixing on concentrated biogas slurry and trace element fertilizers, thus obtaining the organic basic chelate/complex trace element fertilizer liquid; (4) preparing an organic liquid fertilizer primary liquid: carrying out dispersive mixing on the three kinds of liquids and an organic polymer dispersing emulsifier, thus obtaining the organic liquid fertilizer primary liquid; (5) preparing the organic liquid fertilizer based on concentrated biogas slurry: carrying out filtration and centrifugal separation on the organic liquid fertilizer primary liquid, thus obtaining the organic liquid fertilizer. The preparation method has the effect of achieving resource utilization of anaerobic digestion liquids of large-scale biogas projects. The prepared organic liquid fertilizer is applied as a special fertilizer for drop irrigation, soaking of seeds, seed dressing, root irrigation or foliage spray.

The invention discloses a method for preparing a titanate, anatase TiO2 and AgCl/Ag/TiO2 composite material. The method comprises the following steps: melting pure aluminum and copper by heating to obtain molten Al-Ti alloy and preparing an alloy strip from the molten Al-Ti alloy by virtue of a single-roller melt-spinning method; dealloying the alloy strip to titanate; processing titanate with hydrochloric acid to obtain anatase TiO2; and processing TiO2 and AgNO3 under ultraviolet light to obtain AgCl/Ag/TiO2. According to the method, the titanate, TiO2 and AgCl/Ag/TiO2 composite material is prepared at a low temperature for the first time by virtue of the dealloying method, the operation process is simple and convenient and good in repeatability, the hydrothermal process used in the traditional method for preparing titanate and a high-temperature calcination process used in the preparation of TiO2 are avoided and the anatase TiO2 and AgCl/Ag/TiO2 composite material has the advantages of excellent catalytic performance and good stability and has a good application prospect.

The invention discloses a manufacturing method for a multidimensional curved conical tube. The manufacturing method includes that the multidimensional curved conical tube is designed by adopting three-dimensional software, surfaces are separated and unfolded into planes, accurate cutting is achieved, and waste of materials is reduced; fixing with a traditional steel frame is not needed, welding and assembling operations can be performed on the ground to have the surfaces welded, and waste of the steel frame used for one time is reduced; the cross section of the multidimensional curved conical tube is rounded by the aid of pressure of water, production process is simplified, high-temperature machining is avoided, and problems about high-temperature scalding, positioning difficulty, big errors and the like are effectively solved. The waste of the materials is lowered, the process is simplified, industrial accidents are reduced, leveraging of multiple processes is avoided by one-time formation, production efficiency is improved, use of fuel is reduced, and safety and environment friendliness are achieved.

The invention relates to intelligent glasses which comprise a weather receiving module, a first temperature sensor, a second temperature sensor, a lens heat treatment module, a humidity sensor, a posture judgment module and a control module. The weather receiving module is used for receiving weather information at the current moment, the weather information comprises a predicted temperature value, the first temperature sensor is used for detecting the current environment temperature, the second temperature sensor is used for detecting the temperature of the lens, and when the predicted temperature value and the temperature value of the lens are larger than a first preset temperature threshold value, the lens is started. The control module is used for starting the lens heat treatment module to be in a standby state, starting the posture judgment module, receiving posture information of the posture judgment module, and starting the lens heat treatment module to be in a heating mode when the posture judgment module determines that the temperature of the spectacle lens is obvious due to posture change. According to the invention, preheating treatment can be automatically and intelligently carried out according to environmental changes, and the glasses are prevented from fogging to influence sight.