1774results about How to "Uniform growth" patented technology

Systems and methods are delineated which, among other things, are for depositing a film on a substrate that is within a reaction chamber. In an exemplary method, the method may comprise applying an atomic layer deposition cycle to the substrate, wherein the cycle may comprise exposing the substrate to a precursor gas for a precursor pulse interval and then removing the precursor gas thereafter, and exposing the substrate to an oxidizer comprising an oxidant gas and a nitrogen-containing species gas for an oxidation pulse interval and then removing the oxidizer thereafter. Aspects of the present invention utilize molecular and excited nitrogen-oxygen radical/ionic species in possible further combination with oxidizers such as ozone. Embodiments of the present invention also include electronic components and systems that include devices fabricated with methods consistent with the present invention.

The present invention relates to a process and system for depositing a thin film onto a substrate. One aspect of the invention is depositing a thin film metal oxide layer using atomic layer deposition (ALD).

The invention discloses a concentric-ring sprayer structure for material vapor phase epitaxy, which solves the problem that the large-area deposition region provides a uniform flow field of a precursor gas mixture in a large-substrate or multi-substrate crystal growth process. The sprayer structure comprises more than one independent air inlet pipeline, wherein each air inlet pipeline is provided with a controller for monitoring and regulating inlet gas flow speed and flow rate; the bottom of the sprayer is provided with an air outlet baffle; more than one concentric ring is arranged in the sprayer; independent cavities are formed among the concentric rings and are mutually separated; the top end of each concentric ring is connected with one independent air inlet pipeline; and the air outlet baffle at the bottom end of each concentric ring is provided with one or more air outlets. The air sources are mutually separated and independently controlled; and the multi-sprayer integrated use mode obviously improves the quality of the large-area deposited grown crystal, and greatly enhances the production efficiency.

A nutriculture device and a stack-type nutriculture pot system for use in the nutriculture device are disclosed. The nutriculture vice includes moving means for periodically moving a plurality of nutriculture pots, each having culture soil for supporting a crop, on a predetermined closed loop type moving track, a spray nozzle installed at a location on the moving track of the nutriculture pots, for supplying a nutrient solution to the nutriculture pot passing through the location, and a nutrient solution recovery channel for recovering the nutrient solution flowing from the nutriculture pot. Since the above-described nutriculture device supplies a nutrient solution to a plurality of nutriculture pots using a single spray nozzle, its construction can be noticeably simplified. Also, since a nutriculture pot moves periodically so that its location in a houseplant changes at any time, an amount of sunshine applied to a crop is uniformly maintained, allowing the crop to grow evenly.

The invention provides a metal organic framework/carbon nanofiber composite membrane material and a preparation method thereof. The metal organic framework/carbon nanofiber composite membrane material is characterized by comprising a carbon nanofiber membrane, wherein a metal organic framework layer is grown on the nanofiber surface of the carbon nanofiber membrane. The preparation method comprises the following steps: first preparing a flexible carbon nanofiber membrane, oxidizing the flexible carbon nanofiber membrane by using nitric acid to form a carboxyl group-containing flexible carbon nanofiber membrane, putting the carboxyl group-containing flexible carbon nanofiber membrane into a precursor solution of a metal organic framework to grow the metal organic framework to obtain the metal organic framework/carbon nanofiber composite membrane material. The metal organic framework/carbon nanofiber composite membrane material prepared according to the preparation method provided by the invention has a great application potential in the fields of gas adsorption and separation, catalysts, sensors, electrode materials and the like.

The invention relates to an environmentally-friendly plate for raising rice seedlings and a rice seedling production method, which belong to a rice seedling raising medium and a production method. The plate contains the following raw materials in percentage by weight: 40 to 60 mesh crushed coin straw 60-80, industrial paper pulp processing waste slag liquid 15-25, and 40 to 60 mesh industrial fluidized bed furnace ground slag 5-15. The method comprises: material preparation, raw material crushing, fermentation, mixing, material drying, stirring, pulping, mold loading, compression molding, demoulding and drying. The plate and the production method have the advantages of reducing damages to vegetation, namely plough layer surface soil, solving the problem of difficult soil digging, developing and utilizing straw resources, realizing energy conservation and emission reduction, integrating the medium and the plate, replacing a seedling raising plate and being suitable for the standardization of mechanical sowing, mechanical planting and seedling raising.

A nitride semiconductor light-emitting device wherein a substrate or nitride semiconductor layer has a defect concentration region and a low defect density region other than the defect concentration region. A portion including the defect concentration region of the nitride semiconductor layer or substrate has a trench region deeper than the low defect density region. Thus by digging the trench in the defect concentration region, the growth detection is uniformized, and the surface planarity is improved. The uniformity of the characteristic in the wafer surface leads to improvement of the yield.

The invention discloses a method for growing a single-layer graphene thin film by virtue of low-temperature chemical vapor deposition, and belongs to the technical field of two-dimensional thin film material preparation. The preparation method comprises the following steps: (1) preparing an alloy substrate; (2) performing leveling treatment on the alloy substrate; (3) performing annealing treatment on the alloy substrate under a protective atmosphere; and (4) depositing graphene by using a chemical vapor deposition process, and cooling to room temperature to obtain the alloy substrate with a grown single-layer graphene thin film, wherein conditions of the chemical vapor deposition process are as follows: the temperature is 200-800 DEG C, the time is 5-180min, and a carbon source is a gas phase carbon source, a liquid phase carbon source or a solid phase carbon source. The method disclosed by the invention has the advantages that the method is simple, convenient and fast, also is low in cost, and ensures that uniform and single-layer high-quality graphene can be prepared at relatively low temperature; and the method has universality, is simple and mild in condition, uniform in product distribution and good in repeatability, is suitable for industrial production, and is particularly suitable for controllable preparation of single-layer or few-layer graphene.

Disclosed is a slab continuous casting chamfer crystallizer narrow-face copper plate capable of effectively controlling longitudinal cracks of corners. The working faces of a narrow-face chamfer copper plate (1), which contact with molten steel, comprise a chamfer surface (3), a chamfer surface (4), a plane portion (2) between the two chamfer surfaces, width portions (5 and 6) of the chamfer surfaces (3 and 4) at the positions of the upper opening of a crystallizer and width portions (7 and 8) of the chamfer surfaces (3 and 4) at the positions of the lower opening of the crystallizer. The narrow-face copper plate is characterized in that the sizes of the width portions (7and 8) of the chamfer surfaces at the positions of the lower opening are larger than those of the corresponding width portions (5 and 6) at the positions of the upper opening respectively, so that tapers are formed on the chamfer surfaces (3 and 4) from the width portions (5 and 6) of the chamfer surfaces (3 and 4) at the positions of the upper opening of the crystallizer to the width portions (7 and 8) of the chamfer surfaces (3 and 4) at the positions of the lower opening of the crystallizer, under the condition of different shrinkage masses of solidified shells of the inner width face and the narrow face of the crystallizer, air gaps formed on the chamfer faces due to large shrinkage mass of width faces are eliminated by means of the taper compensation on the chamfer faces, and the longitudinal cracks of the corners and the bleed-out accidents caused by the longitudinal cracks are avoided.

The invention discloses a lithium cathode used for a lithium battery and provided with a sandwich structure and a preparation method thereof. The lithium cathode is provided with the sandwich structure formed by a conductive current collector, a metal lithium layer and a high polymer material layer. The method for preparing the lithium cathode comprises a first step of preparing an electrode precursor by compounding a high polymer material and the conductive current collector; and a second step of causing metal lithium to enter an intermediate layer of the electrode precursor to form the lithium cathode with the sandwich structure. By introduction of the high polymer material as a protective layer, growth of metal lithium dendrites can be inhibited, the safety of the lithium battery is improved, the volume expansion in the lithium battery cyclic process can be adapted, and an effect of stabilizing an interface is achieved. In addition, the conductive high polymer material can form a conductive network on the surface of the lithium cathode, lithium ions are induced to be deposited evenly, and a buffer effect on the lithium ions can also be achieved under the conditions of high-current charging and discharging. The method is simple to operate, low in cost, has easiness in large-scale production and has great potential application values in the lithium battery.

The invention relates to an artificial breeding technology of beeves. The artificial breeding technology of the beeves includes steps: completing construction of a beef house according to environment requirements; selecting the beeves, and paying attention to the breeding density in a pasture; selecting healthy beef breeds, separately feeding the healthy beef breeds, and promoting estrus copulation of the healthy beef breeds; separately breeding mother beeves after gravidity of the mother beeves, paying attention to nutrition in a suckling period, and managing the feeding of calves; promoting a group of the beeves to fatten and performing timely hybridization. The artificial breeding technology of the beeves can effectively improve survival rate and growth rate of artificial breeding of the beeves, increases a beef yield of the beeves, improves economic benefit, and promotes development of beef breeding industry in an alpine region.

The invention discloses an intelligent cultivation method for bean sprouts. An incubator, a water tank, a base and a control system are provided, and the method comprises the following steps of control on heating, humidification and illumination. For the heating and humidification control, PID closed-loop control is adopted; a temperature and humidity sensor is installed in the incubator; a single chip processes a detected temperature and humidity signal and outputs a corresponding control signal; and a temperature and humidity control module realizes accurate control on the temperature and humidity in the incubator. The heating method is characterized in that air is directly heated by a heating rod, water is atomized by an ultrasonic atomizer, and then the hot air and the water mist are mixed by a fan at the bottom of a heating room and delivered mixture to the incubator. The illumination control is realized by using an LED lamp. The invention solves the problems of non-uniform spraying, excessive waste water, slow heating, high energy consumption, inaccurate temperature and humidity control and the like in the existing bean sprout cultivation device, and is applied to the devices such as a bean sprout incubator, a seed incubator, a household bean sprout growing machine, etc.

The invention discloses a ternary precursor with a controllable crystal structure, a positive electrode material and a preparation method of the positive electrode material. Specifically, a nickel-cobalt-manganese soluble salt, NaOH, concentrated ammonia water and a surfactant for oriented growth are separately formulated into solutions and then subjected to a coprecipitation reaction to obtain aternary precursor of an oriented grow structure; the precursor is mixed with a lithium source and then calcined at high temperature to obtain a ternary layered positive electrode material of an oriented grow precursor-like structure. The positive electrode material the crystal structure of which grows in a [003] direction is obtained by regulating the growth of the precursor, so that the order degree of internal structure growth is increased, the stability of internal structure growth is improved, cation mixing and Li+ diffusion resistance are reduced, and the Li+ diffusion coefficient is increased. The ternary precursor with the crystal structure controllable, the positive electrode material and the preparation method of the positive electrode material are applicable to lithium-ion powerbatteries. Compared with existing products, the ternary precursor and the positive electrode material have the advantages that the rate performance and cycle stability of lithium-ion batteries are significantly improved.

A method for preparing the germinated embryo rice from non-glutinous rice includes such steps as spreading said rice to become thin layer, immersing in water, germinating, passivating in the water at 70-100 deg.C, washing, and antistaling packing or drying including hot air baking and microwave drying. Its apparatus is composed of container with openable cover or door, and rice spreading unit.

The invention relates to a substrate holder and a method for growing monocrystalline diamond and belongs to the field of crystal synthesis. The substrate holder is a molybdenum piece with a square groove formed in the smooth upper surface, the groove is in the shape of a step composed of an inner groove and an outer groove and is used for containing diamond seed crystals, depth of the groove is equal to thickness of the diamond seed crystals placed in, and depth of the outer groove is 0.5 mm. Effects of the groove on inhibiting excessively-fast growing and maintaining uniformity and flatness of a growing face are utilized, so that quality of the monocrystalline diamond grown artificially is improved remarkably. In the process of growing, shape and size of the groove need to be adjusted to enable growing speed of the whole growing face of the diamond to be uniform. The substrate holder has the advantages of simplicity in design and manufacture, wide using range and high quality of the diamond grown.

The invention provides the industrial preparation method of the nano activated calcium carbonate. The crystal control agent is added in the suspending liquid of the calcium hydroxide and is carbonized by the kiln gas containing the carbon dioxide. Through controlling the temperature and concentration of the calcium hydroxide, the concentration of the carbon dioxide and the addition and variety of the crystal control agent, the initial nucleation rate and nucleation quantity of the crystal and the growth rate of each crystal face of the crystal during carbonization are adjusted to realize the shape control of the crystal, and then surfactant is added to conduct activating treatment. The nano activated calcium carbonate is gained after filtering and drying, which has a shape of cube and is regulable when the grain size is between 20nm to 100nm. The product gained by the method has excellent performance and can work as the functional filler, which can be widely used in such industries as top-grade coating, rubber, plastic and adhesive.

The invention discloses a multi-walled carbon nanotube-loaded nano ferrofferic oxide (Fe3O4) catalyst and a preparation method and an application thereof. In the multi-walled carbon nanotube-loaded nano ferrofferic oxide catalyst, ferroferric oxide is distributed on the surface of the outer wall of the multi-walled carbon nanotube. The preparation process is simple, the cost is low, and easiness in industrialized popularization is realized. In the synthesized catalyst, the crystallinity of the Fe3O4 nano particles is high, the particle size is controllable, and the particles distribution is narrow. The catalytic activity of the multi-walled carbon nanotube-loaded nano ferrofferic oxide (Fe3O4) catalyst multi-walled carbon nanotube-loaded nano ferrofferic oxide (Fe3O4) catalyst (Fe3O4-MWCNTs) is high and the Fe3O4-MWCNTs is easy for being repeatedly used through magnetic separation. The Fe3O4-MWCNTs which is prepared by the method can be used as peroxide mimic enzyme and can be used as catalyst for organic pollutants which are difficult to degrade and for organic synthesis.

The invention discloses a preparation method of an aluminum oxide carrier. The preparation method comprises the following steps: firstly, performing neutralization reaction on an alkaline aqueous precipitator solution and an acidic aqueous aluminium salt solution to obtain precipitate slurry; secondly, adding water-soluble resin into the precipitate slurry, and performing aging treatment through microwave heating; finally, filtering, washing, drying and shaping the aged mixed material to obtain the final aluminum oxide carrier. The aluminum oxide carrier prepared by adopting the preparation method has a relatively large aperture and concentrated pore distribution, especially 10-20nm pores account for a large proportion of the total pore volume; the aluminum oxide carrier is suitable for being used as the carrier for a heavy oil hydrogenation catalyst.