5753results about How to "The process steps are simple" patented technology

A method for forming a layer of an LED phosphor material includes disposing a first surface in a proximity of a powder that includes an LED phosphor material, forming electrostatic charges on the first surface, and forming a layer of the LED phosphor material on the first surface at least partially by using the electrostatic charges. In an embodiment, the method includes disposing the first surface in an interior of a chamber and forming an airborne distribution of the powder in the interior of the chamber in a vicinity of the first surface. In another embodiment, the method includes providing a reservoir of the powder and applying to said phosphor powder an electrostatic charge opposite to that of said electrostatic charge on the first surface.

An injectable depot gel composition containing a polymer, a solvent that can dissolve the polymer and thereby form a viscous gel, a beneficial agent; and an emulsifying agent in the form of a dispersed droplet phase in the viscous gel. The injectable depot gel composition can be prepared by mixing the polymer and the solvent so that the solvent dissolves the polymer and forms a viscous gel. The beneficial agent is dissolved or dispersed in the viscous gel and the emulsifying agent is mixed with the beneficial agent containing viscous gel. The emulsifying agent forms a dispersed droplet phase in the viscous gel to provide the injectable depot gel composition. The injectable depot gel composition can deliver a beneficial agent to a human or animal with a desired release profile.

With an interconnected fabrication step using the prior art photolithography, major portions of resist, interconnected material, and process gas necessary during plasma processing are wasted. Furthermore, a pumping means such as a vacuum system is necessary. Therefore, the whole equipment is increased in size. Consequently, as the processed substrate is increased in size, the manufacturing cost is increased. Accordingly, a means consisting of directly spraying the resist and interconnected material as liquid drops on necessary locations over the substrate to delineate a pattern is applied. Also, a means consisting of performing a chemical vapor deposition process such as ashing or etching at or near atmospheric pressure is applied.

The invention relates to a process of producing small molecular weight polyether amine by a continuous method. A continuous method fixed bed process is adopted, polyether, liquid ammonia and hydrogen are used as raw materials, 2-6 reactors which are fixed bed reactors or tubular reactors are connected in series and each reactor is internally filled by a Raney metal catalyst or a supported metal catalyst, respectively; under the reaction condition of certain temperature, pressure and molar proportion, the raw materials are sequentially reacted through the reactors to obtain polyether amine, the molecular weight of which is 100-1000. The process provided by the invention is simple in step. Multiple reactors and a compound catalyst system are adopted, so that the influence of generated water in the reaction to the catalyst efficiency is effectively reduced, and the yield and the conversion ratio of reaction are improved.

A full color fiber plasma display device includes two glass plates sandwiched around a top fiber array and a bottom fiber array. The top and bottom fiber arrays are substantially orthogonal and define a structure of the display, with the top fiber array disposed on a side facing towards a viewer. The top fiber array includes identical top fibers, each top fiber including two sustain electrodes located near a surface of the top fiber on a side facing away from the viewer. A thin dielectric layer separates the sustain electrodes from the plasma channel formed by a bottom fiber array. The bottom fiber array includes three alternating bottom fibers, each bottom fiber including a pair of barrier ribs that define the plasma channel, an address electrode located near a surface of the plasma channel, and a phosphor layer coating on the surface of the plasma channel, wherein a luminescent color of the phosphor coating in each of the three alternating bottom fibers represents a subpixel color of the plasma display. Each subpixel is formed by a crossing of one top fiber and one corresponding bottom fiber. The plasma display is hermetically sealed with a glass frit. The sustain and address electrodes are brought out through the glass frit for direct connection to a drive control system.

A high capacity dye-sensitized solar cell module where a plurality of unit cells are simultaneously formed at a substrate in a simplified manner with increased light absorption efficiency. The dye-sensitized solar cell module includes first and second conductive substrates facing one another with regions for a plurality of unit cells. First and second electrodes are formed on the first or the second substrate such that the first and the second electrodes face one another at the respective unit cells. A dye is adsorbed at the first electrode. The space between the first and the second substrates at the respective unit cells is filled with an electrolyte. Insulation regions are formed on at least one of the first and the second substrates between a pair of unit cells neighboring to one another. The pattern of insulation regions, on one or both of the substrates, results in the unit cells being coupled in series, in parallel, or in a combination manner.

The invention relates to a chiral spiro aminophosphine ligand compound and a synthesis method as well as an application thereof. The chiral spiro aminophosphine compound contains a compound with a structure shown in I, or a racemic body or an optical isomer thereof, or a catalyzed acceptable salt thereof, wherein the main structure characteristic is with a chiral spirobiindane matrix. The chiral spiro aminophosphine compound can be synthesized by taking 7-diaryl/phosphito-7'-carboxy-1, 1'-spirobiindane or substituted 7-diaryl/phosphito-7'-carboxy-1, 1'-spirobiindane as chiral starting materials, which has optical activity and spiro matrix. The chiral spiro aminophosphine compound can be used as a chiral ligand for an asymmetrically catalyzed hydrogenation of an iridium catalyzed carboxy compound and achieves high yield and enantioselectivity (97%ee). The reactive activity is also high and the consumption of the catalyst can be reduced to 0.01% molar.

The invention provides a medical anti-sticking membrane and a preparation method thereof. The anti-sticking membrane comprises a nanometer frame and hydrosol attached thereon. The hydrosol is internally packed with one or several kinds of styptic medicament or/and anti-sticking medicament. The invention also provides a preparation method of the anti-sticking membrane, comprising the following steps of: preparing electro-spinning solution, styptic medicament and/or anti-sticking medicament-containing hydrosol solution and crosslinker solution; receiving static spinning with the crosslinker solution to obtain the nanometer frame; printing the styptic medicament and/or anti-sticking medicament-containing hydrosol solution onto the nanometer frame by an ink-jet printer, and solidifying the hydrosol solution to obtain the anti-sticking membrane. The anti-sticking membrane has good capability and biological compatibility, and nontoxicity as well as nonirritant, can be completely degraded and absorbed, is compounded with controllably released styptic medicament or/and anti-sticking medicament, has controllable degrading time and speed, and conquers defects of the prior art.

The invention provides a nanometer bionic wound-surface cover and a preparation method thereof. The nanometer bionic wound-surface cover comprises a nanometer bionic bracket and hydrosol attached to the bracket, wherein the hydrosol covers one or a plurality of cytokines. The preparation method for the nanometer bionic wound-surface cover provided by the invention comprises the steps of preparingan electrostatic-spinning solution, a cytokine-containing hydrosol solution and a crosslinker solution, preparing the nanometer bionic bracket by use of electrostatic spinning, using an ink-jet printer to print the cytokine-containing hydrosol solution onto the nanometer bionic bracket, and the like, wherein electrostatic spinning and printing can be repeated so as to form the wound-surface covers different in thickness. The preparation method adopts an in-situ autologous stem-cell engineering technique and adopts stem-cell chemotactic factors to attract autologous stem cells to directionally migrate, enter a wound surface and be differentiated according to designed requirements, thereby avoiding inconvenience caused by using viable cells, achieving rehabilitation effects the same with orbetter than that of using the viable cells and having broad application prospects.

The invention discloses a preparation method for a graphene/aramid fibre 1414 nano-fibre composite membrane, comprising the following steps of: performing nano-fibrillation on aramid fibre 1414 yarns via the solution system of dimethyl sulfoxide and potassium hydroxide; slowly adding dimethyl sulfoxide solution for oxidizing graphene, sequentially centrifuging, dispersing, performing suction filtration and film formation, and thus obtaining oxidized graphene/aramid fibre 1414 nano-fibre composite membrane; and reducing via hydroiodic acid, washing, drying, and thus obtaining the graphene/aramid fibre 1414 nano-fibre composite membrane. The tensile strength and the Young modulus of the graphene/aramid fibre 1414 nano-fibre composite membrane obtained by the preparation method disclosed by the invention can achieve 209.4 Mpa and 29.5 GPa respectively, thus showing excellent mechanical property; simultaneously, the conductivity of the graphene/aramid fibre 1414 nano-fibre composite membrane can achieve 175 S/m, thus being excellent in conductance; and a thermogravimetric analysis shows that the graphene/aramid fibre 1414 nano-fibre composite membrane is good in heat stability.

The invention discloses a catalyst system for preparing vinyl chloride by hydrochlorinating acetylene, and preparation and application thereof. The catalyst system comprises a catalyst carrier and a catalyst, wherein the catalyst carrier is pyridine ionic liquid, and the catalyst is one or any combination of more than two of tin, palladium, gold, copper, manganese, bismuth, mercury and rhodium. The preparation method for the catalyst system comprises a step of dissolving the catalyst in the catalyst carrier. Acetylene gas and hydrogen chloride gas are mixed and then reacted in the presence of the catalyst system. The preparation process realizes a liquid phase reaction for preparing the vinyl chloride by hydrochlorinating the acetylene, avoids the loss of the catalyst system, is more environment-friendly and safer, and improves the conversion rate of the acetylene and the selectivity of the vinyl chloride.

The invention provides artificial articular cartilage based on autologous cells and a preparation method thereof. The artificial articular cartilage comprises a nano bionic support and hydrosol adhered to the nano bionic support, wherein one or more cytokines are coated into the hydrosol. The invention also provides the method for preparing the artificial articular cartilage, which comprises the following steps: preparing an electrostatic spinning solution, a cytokine-containing hydrosol solution and a crosslinking agent solution; using the crosslinking agent solution to receive electrostatic spinning so as to prepare the nano bionic support; and using an ink jet printer to print the cytokine-containing hydrosol solution on the nano bionic support, and curing the hydrosol to obtain the artificial articular cartilage. The three-dimensional support adopted by the invention has ideal degradation speed and is degraded after the regeneration of an articular cartilage layer, can meet the requirement of actual clinical application, can be completely degraded, and has good abrasion resistance and lubricity so as to be capable of replacing the cartilage before the regeneration of the articular cartilage layer.

A method for preparing magnetic biochar from straw includes the step of selecting of a straw material, wherein wheat straw, corn straw, rice straw or cotton straw is selected as the straw material, the straw material is pretreated by cleaning, then the straw material is dipped with a trivalent iron salt solution, and filtered by vacuum, then a filter cake is dried, and a finished magnetic biochar product can be obtained by carbonization treatment in inert gas conditions. The magnetic biochar can be obtained by dipping the straw material in the trivalent iron salt solution by a pyrolysis process, and a new way for the use of straw is provided.

Conventional ion rechargeable batteries having an electrode layer on an electrolyte layer suffer from an impurity layer formed at the interface, degrading performance. Conventional batteries with no such impurity layer have a problem of weak interface bonding. In the present invention, in a baking process step after an electrode layer is laminated on an electrolyte layer, materials for an electrode layer and an electrolyte layer are selected such that an intermediate layer formed of a reaction product contributing to charging and discharging reactions is formed at the interface of the electrode layer and the electrolyte layer. In addition, a paste that an active material is mixed with a conductive material at a predetermined mixing ratio is used to form a positive electrode layer and a negative electrode layer. Reductions in electrode resistance and interface resistance and improvement of charging and discharging cycle characteristics are made possible.

A 3D NAND memory and a forming method thereof are disclosed. According to the forming method of the 3D NAND memory, at least one pseudo common source penetrating a stacking structure is formed in gateisolation groove regions, gate isolation grooves penetrating the stacking structure are subsequently formed in the gate isolation groove regions on the two sides of the pseudo common sources, and thegate isolation grooves formed on the two sides of the pseudo common sources expose the corresponding side walls of the pseudo common sources. In the process of forming the gate isolation grooves, inthe process of removing a sacrificial layer after the formation of the gate isolation grooves and in the process of forming control gates and array common sources, the pseudo common sources can support the two side walls of the gate isolation grooves and prevent the two side walls of the gate isolation grooves from deforming or tilting. Thus, the stability of the characteristic dimensions of the formed gate isolation grooves is ensured, and the performance of the 3D NAND memory is improved.

The invention discloses an LED (Light Emitting Diode) epitaxial structure with a P (Positive) type superlattice and a preparation method thereof. The epitaxial structure comprises a substrate, wherein a GaN (Gallium Nitride) buffer layer, an undoped GaN layer, an n (negative) type GaN layer, a multi-quantum well luminous layer, a first P type GaN layer, a P type AlGaN (Aluminium Gallium Nitride) electronic blocking layer and a second P type GaN layer are sequentially arranged on the substrate from bottom to top, and the P type superlattice formed by a PInGaN (P type Indium Gallium Nitride) potential well layer and a PAlGaN potential barrier layer in a periodic interactive overlapping way is arranged between the P type AlGaN electronic blocking layer and the second P type GaN layer. The PInGaN potential well layer in the P type superlattice generates and constrains a great number of holes for the formation of a two-dimensional hole high-density state; the PAlGaN potential barrier layer hinders the escape of the holes; in such a way, the transverse spreading of the holes is improved, the electron overflow can be prevented, the hole injection efficiency is increased and the electron and hole recombination probability is improved; and therefore, the brightness of a chip can be improved by 5-10%.

The invention relates to a nanometer silica sol modified exterior wall emulsion paint. The emulsion paint comprises, by mass, 10-30% of water, 15-30% of an emulsion, 5-10% of a nanometer silica sol, 5-15% of heavy calcium, 1-3% of talc, 0.5-1.5% of propylene glycol, 5-25% of titanium dioxide, 0.05-2% of a wetting agent, 0.5-1% of an antifoaming agent, 0.1-0.5% of a dispersant, 1-2% of a thickening agent, and 0.5-2% of a film forming assistant. The preparation method comprises the following steps: dispersion grinding: adding water, powders and early assistants to a dispenser, grinding, and filtering; and post-treating: adding the emulsion, the nanometer silica sol, later water and later assistants to a dispersed slurry, and adjusting the PH value and the viscosity to prepare the emulsion paint. According to the invention, the exterior wall emulsion paint, which is prepared by completing simple technologies of dispersing, sand milling, filtering and the like, has the advantages of no pollution, low VOC (volatile organic compound) discharge, environmental protection, strong adhesion, and good storage stability, washing resistance, contamination resistance and weather resistance.

The invention discloses a preparation method for a nanocrystals cellulose/white carbon black/rubber composite material. The nanocrystals cellulose (Nanocrystals Cellulose, called NCC for short) is a rod-shaped crystallized product which is obtained by performing acidolysis on microcrystalline cellulose, has the diameter of between 20 and 60 nm and the average length of 300 nm, can serve as a novel reinforcing material for rubber, and has the characteristics of reproducibility, low density, orientation, high strength and the like; moreover, the preparation method is simple and convenient; the cost is low; and the NCC is easy to obtain. Researches discover that a reinforcing effect of the NCC to natural rubber is superior to that of white carbon black; the thermal-oxidative ageing property of the natural rubber is improved very well; simultaneously the heat generation of the composite material is reduced; and the nanocrystals cellulose/white carbon black/a rubber composite material can be prepared by adopting a conventional rubber processing process. The nanocrystals cellulose/white carbon black/a rubber composite material prepared by the invention can be used for manufacturing various vulcanized rubber products.