31results about How to "Morphological influence" patented technology

The invention relates to a preparation method of graphene aerogel and graphene-carbon nanotube aerogel. According to the method, graphene oxide or a mixture of graphene oxide and carbon nanotube is subjected to drying treatment; graphene oxide is reduced through a magnesium thermal reaction; the material is soaked in an acidic water solution; and impurities are removed, and the material is dried, such that graphene aerogel or graphene-carbon nanotube aerogel is obtained. Compared with prior arts, the method provided by the invention has the advantages of simple process, and is green and environment-friendly. Magnesium powder is adopted as a reducing agent. Compared to reducing agents such as hydrazine hydrate, sodium borohydride, formaldehyde, carbohydrate compounds, ascorbic acid and hydroiodic acid, magnesium powder has higher reducibility, such that the graphene aerogel or graphene-carbon nanotube aerogel with high carbon-oxygen ratio can be prepared. The electrical conductivity of the graphene aerogel or graphene-carbon nanotube aerogel can reach 10<4>s/cm. The graphene aerogel or graphene-carbon nanotube aerogel has large specific surface area, and is non-toxic and harmless. The graphene aerogel or graphene-carbon nanotube aerogel can be widely applied.

The invention discloses a method for reducing the sulphur content of a ternary precursor. Sulfate is used as a ternary salt raw material, and the ternary salt raw material, an alkaline solution and acomplexing agent are added to a reaction kettle for co-precipitation to prepare the ternary precursor, after co- precipitation reaction is carried out for 5-15 hours, pure water is added continuouslyor intermittently to the reaction kettle to replace clear liquid in the reaction kettle, and meanwhile, the alkaline solution and the complexing agent are added to keep a reaction system stable. The problem that the sulphur content in the ternary precursor exceeds the standard due to the fact that the sulfate is adsorbed on the surface of a crystal during the growth of the crystal and then wrappedinside the crystal is solved, the sulphur content of the prepared ternary precursor after one-time washing is less than 530 ppm, and during the subsequent water washing process, water resources are effectively saved; and the impurity content is reduced, the jolt ramming density of the ternary precursor is increased, and the morphology of the ternary precursor is not affected.

The invention discloses a preparation method and application of a graphene/cobalt-nickel-manganese ferrite nano-composite material. The preparation method comprises: adding a solution containing an iron source, a cobalt source, a nickel source and a manganese source into a dispersion containing graphene oxide drop by drop to obtain a mixed solution, adjusting pH of the mixed solution to greater than or equal to 8, adding a reducing agent into the mixed solution to obtain a precursor solution, transferring the precursor solution into a reactor, and carrying out microwave synthesis to obtain thegraphene/cobalt-nickel-manganese ferrite nano-composite material. The graphene/cobalt-nickel-manganese ferrite nano-composite material is composed of layered graphene and spherical cobalt-nickel-manganese ferrite nanoparticles. The spherical cobalt-nickel-manganese ferrite nanoparticles are uniformly dispersed on the layered graphene surface and between the layers. The graphene/cobalt-nickel-manganese ferrite nano-composite material has the characteristics of strong absorption intensity, effective absorption frequency bandwidth, thin thickness and light weight.

The invention discloses a low-impedance interface processing method of a solid-state lithium battery positive electrode and a positive electrode structure. By the method, impedance of two interfaces between active material particle in a positive electrode plate and solid-state electrolyte particle and between the positive electrode plate and an electrolyte piece can be effectively reduced, so thatthe capacity of active positive electrode particle in the solid-state lithium battery can be effectively developed. The dual-layer structure ceramic piece comprising a solid-state electrolyte layer and a positive electrode layer and fabricated by the method is excellent in performance and has favorable application prospect in the field of solid-state lithium batteries.

A semiconductor device forming method includes providing a semiconductor substrate, forming a first mask layer on the semiconductor substrate, forming a first groove penetrating the first mask layer for a part of thickness, filling the first groove with a first hard mask layer, forming a second groove penetrating the first hard mask layer for the thickness of the first hard mask layer; utilizing the first hard mask layer as a mask to etch the first mask layer and the semiconductor substrate till a through hole or a groove is formed in the semiconductor substrate. By means of the semiconductor device forming method, only one etching process is required in formation of the through hole or the groove through a double graph technology, double graph forming process difficulty and manufacture cost are reduced, and the semiconductor device forming cost is further reduced.

The invention discloses a metal-silver-supported titanium dioxide photocatalyst and a preparation method thereof. The photocatalyst material is composed of metal-silver-supported titanium dioxide microspheres, wherein the diameter of the titanium dioxide microspheres is 300-500nm; the supported metal silver is dispersed in the titanium dioxide microspheres in a bulk phase homogenization manner; the diameter of the metal silver particles is 5-15nm; and the photocatalyst material has very high photocatalysis efficiency for simulated organic pollutant rhodamine B in water body under the irradiation of ultraviolet and visible light. The preparation method is simple in process, safe to operate and low in cost; and all the used reagents are cheap and accessible, and are free of substances poisonous/harmful to human body or environment.

The invention relates to a spherical Co (II) Co (III) hydrotalcite like material and a preparation method thereof, which are characterized in that the hydrotalcite like material is a layered dihydroxyl metal hydroxide formed by a divalent cobalt hydroxide and a trivalent cobalt hydroxide; interlayer object anions are organic acid radicals; particles have a spherical morphology. Mixed solution of cobalt salt and ammonium salt is used as a raw material A, mixed solution of organic acid sodium and an oxidizing agent is used as an additive B, and solution of the raw material A and the additive B is added into sodium hydroxide base solution by adopting a coprecipitation method; nitrogen gas is filled into a reaction kettle, violent stirring is carried out, and the temperature of the reaction kettle is controlled within a range of 35 DEG C to 65 DEG C; a sizing agent is centrifuged or filtered to obtain a filter cake, the filter cake is flushed with water until the filter cake is neutral, and vacuum drying is carried out to obtain the spherical Co (II) Co (III) hydrotalcite like material. According to the invention, effective control on a valence state of metal cobalt in a coprecipitation system is implemented, the hydrotalcite like material prepared hereby is single in crystal form and high in regularity, and the product is excellent in sphericity degree and relatively compact in sphere surface.

A method for collecting etching conditions includes the steps that wafers are divided into at least two kinds of etching areas, dielectric layers with the target thickness are formed on the wafers, after through holes are formed in the dielectric layers of the etching areas of the first kind, compensation layers are formed in the through holes and on the rest of the dielectric layers, accordingly the sum of the thickness of the compensation layers and the thickness of the rest of the dielectric layers is equal to the target thickness of the dielectric layers before the first through holes are formed, furthermore, on the premise that shapes and appearances of the through holes are not influenced, the same wafer can be etched for many times, the utilization rate of the wafers is improved, the wafers are saved, and collection cost of the etching conditions is reduced.

The invention provides a bending die with self-lubricating pits and a preparation method, and relates to the field of bending dies. The bending die comprises a male die and a female die which are matched with each other, wherein a plurality of pit textures arranged in a specific mode are arranged on the working faces of the male die and the female die, and the pit textures are used for containing a solid lubricant to form self-lubrication; the pit textures are distributed on the bending part and/or the cambered surface part of the working surface and avoid the ridge lines of the working surfaces; a micro-pit texture is machined on the surface of the bending die and can store a lubricating agent and abrasive dust generated in the working process, and the lubricating agent can continuously feed oil in the working process of the bending die, so that the effect of reducing friction is achieved; in addition, the abrasive dust is stored in the micro-pit texture, and three-body abrasion caused by the fact that the abrasive dust stays on the working face is avoided, and the anti-friction and anti-wear performance of the bending die is comprehensively improved.

The invention discloses a method for doping a Co3O4 nanowire with Sn. The method comprises the following steps: adding the Co3O4 nanowire, oleylamine and oleic acid into an organic solvent, heating to 80-100 DEG C, then, adding SnCl2, and reacting for 1-3 hours to obtain a Sn-doped Co3O4 nanowire. The method disclosed by the invention is used for successfully doping the Sn element into Co3O4, is simple to operate, almost free of influence on Co3O4 morphology, and capable of remarkably improving conductivity of Co3O4 after doping Sn.

The invention provides a Gram staining leucorrhea smear color microscopic image segmentation method and system, and relates to the technical field of digital image processing, and the method comprises the steps: collecting and inputting a Gram staining leucorrhea standard smear; carrying out downsampling and normalization on the collected cell image to obtain a standard size image; converting the standard size image into a single-channel grayscale image; processing the single-channel grayscale image, and excluding a target-free image; separating R, G and B channels in the color image, and performing normalization processing; obtaining and calculating an intersection part of the positive target area and the negative target area, and taking a union set as a mixed negative and positive target; cutting an area in which the negative and positive targets are mixed to form all independent negative and positive targets; and obtaining and classifying area information of each independent target, carrying out targeted form recognition, and counting the number to output a recognition result. According to the invention, possibility can be provided for subsequent cellular morphology recognition, and the preprocessing problem of an input image in target recognition is solved.

The invention discloses a preparation method and products of Bi12TiO20 micro-spheres. The preparation method comprises the following steps: by using a titanium oxyhydroxide precipitate which is obtained by hydrolyzing tetrabutyl titanate by virtue of an ammonia-water solution as a titanium source, fully dispersing the titanium oxyhydroxide precipitate in an ammonium bismuth citrate aqueous solution; then, adding a certain potassium hydroxide as a mineralizer; fully stirring and oscillating; transferring to a reaction kettle; sealing; and carrying out hydrothermal treatment at 150-300 DEG C for 6-48 hours to finally obtain the Bi12TiO20 micro-spheres with the diameters of 2-4 mu m, wherein each micro-sphere is self-assembled by smaller nano-particles. According to the preparation method of the Bi12TiO20 micro-spheres, by using the ammonium bismuth citrate as a bismuth source for the first time, the Bi12TiO20 micro-spheres which are self-assembled by the nano-particles by means of precise regulation of reaction conditions without additionally adding a surface modifier. The preparation method disclosed by the invention is simple and controllable in preparation process.

The present invention provides a method for forming a metal interconnection structure, comprising: first providing a substrate on which a gate structure, a first dielectric layer and a first plug are formed, and then forming a metal interconnection line and hard mask layer, then etch the hard mask layer and a partial thickness of the first dielectric layer to form grooves, and perform at least two wet cleaning processes on the surface of the grooves and the metal interconnection lines, and then deposit second dielectric layer, so that an air gap is formed in the second dielectric layer in the trench, and finally a second plug is formed in the second dielectric layer, wherein the first plug, the metal interconnection line and the second plug form a metal interconnection structure. Before forming the second dielectric layer, multiple wet cleaning processes are performed on the surface of the groove and the metal interconnection to remove high polymer impurities, so that the gap between the metal interconnection and the subsequently formed second dielectric layer is The stress between them is more balanced, thereby avoiding the risk of the second plug protruding and breaking due to extrusion.