150results about How to "Large scale preparation" patented technology

The invention discloses a graphite electric arc discharge method for preparing a nitrogen-doped carbon nano-tube, the nitrogen-doped carbon nano-tube, and a carbon nano-tube element using the nitrogen-doped carbon nano-tube. In the electric arc discharge method for preparing the nitrogen-doped carbon nano-tube, a mixture comprising graphite, a catalyst and a nitrogenous organic compound used as a nitrogen source is used to prepare an anode, and the anode and a cathode are used for electric arc discharge to prepare the nitrogen-doped carbon nano-tube.

The invention discloses a method for preparing a salt-tolerant microbial agent. The method comprises the following steps of in an open culture device, directly carrying out mixed culture on a salt-tolerant microbial flora in a high-salt environment sample under the condition that total salt concentration is 1%-30%; and adding an organic carbon source, nutrient elements and trace elements according to the needs in a culture process, controlling and keeping proper pH, temperature and dissolved oxygen relatively stable. The salt-tolerant microbial agent prepared by adopting the method has good salt tolerance and salinity impact resistance, can degrade organic substances in water without being restrained by high-concentration inorganic salt under the condition that total salt concentration is 1%-30%, and can be directly used for purifying high-salt-content wastewater with salt concentration of 1%-30%. The method disclosed by the invention is simple to operate, short in implementation period and capable of quickly carrying out industrial application.

A surface emitting laser apparatus is formed using a patterned silicon-on-insulator (SOI)-like substrate which is patterned with a buried sub-wavelength high contrast grating and adapted for bonding of a half-VCSEL device containing at least an active region and an upper mirror, to create a VCSEL. The wavelength of the VCSEL, or any individual VCSEL within an array of VCSEL devices, can be set in response to changing HCG characteristics of the lower mirror in the SOI-like substrate, or in the region above the lower mirror within the half-VCSEL. The inventive VCSEL device and fabrication method are beneficial for a number of application and devices.

The invention discloses a system and method for preparing a micro-nano array structure by means of laser light. The method for preparing the micro-nano array structure by means of laser light comprises the steps that a first laser beam with the wavelength enabling a material to be processed to generate the multiphoton absorption effect is provided; homogenization treatment is conducted on the first laser beam in Gaussian distribution, so that a first flat beam with energy evenly distributed is obtained; the first flat beam is split into multiple laser beams arranged in an array mode by means of a microlens array component; the multiple laser beams arranged in the array mode are focused to beam focusing components located on the same plane respectively; a metal ion solution placed on a minitype movable table controlled by a computer is scanned, so that hundreds of micro-nano periodical array structures are obtained, wherein the beam spot area of the first flat beam is equal to or smaller than the effective array area of the microlens array component. According to the method for preparing the micro-nano array structure by means of laser light, the micro-nano array structures of the same structure and in controllable dimensions can be prepared in a large-scale mode rapidly.

The invention discloses a method for preparing multilayer graphene. The method is characterized in that: a compound of a vinyl polymer is prepared through carrying out bulk polymerization or in situ polymerization on raw materials consisting of 85-98.5 wt% of a vinyl monomer, 1-10 wt% of a layered compound and 0.5-5 wt% of an aromatization catalyst, a mixture containing the multilayer graphene isprepared through heating the compound of the vinyl polymer for 1min-10h at 700-1500DEG C in an inert atmosphere, and the purified multilayer graphene with the thickness of 0.35-15nm is prepared through immersing the mixture containing the multilayer graphene in a solution containing 10-30% by mass of hydrofluoric acid for 1-48h, separating to obtain a solid, and immersing the separated solid in amixed solution which comprises concentrated sulfuric acid and concentrated nitric acid according to a volume ratio of 1:1 for 1-48h, and separating. The method of the invention has the following advantages: the vinyl polymer is used as a carbon source, so the raw material source is abundant; the aromatization catalyst used in the invention can be directly obtained from the market; reaction processes are mild and controllable, and operations are convenient; and the low cost and large scale preparation of graphene can be realized.

The invention relates to liquid metal microparticles with core-shell structures and a preparation method and application thereof. Each liquid metal microparticle comprises a core formed by liquid metal and a shell completely wrapping the outer layer of the core, wherein the shell is prepared from an organic high-molecular polymer. The preparation method comprises the steps that the organic high-molecular polymers are dissolved in an organic solvent to form a polymer solution; liquid metal is dropwise added into the polymer solution to disperse the polymer solution into micro-nano particles; and the micro-nano particles are extruded into water through a micropore structure, and thus the liquid metal microparticles with the core-shell structures are obtained after standing. The preparation method of the liquid metal microparticles is convenient and rapid, the sizes of the prepared microparticles can reach the nanometer grade and are uniform and stable, and the problem that the liquid metal microparticles can coagulate again is completely solved. The liquid metal microparticles with the core-shell structures can be quickly prepared in a large scale, and the liquid metal microparticleswith the core-shell structures can be applied to the fields of phase-change microcapsules, nanometer fluids, drug-carrying robots and the like and have excellent application prospects at the industrialization aspect.

The present invention relates to a motor wheel for a vehicle and a vehicle comprising the motor wheel. The motor wheel comprises a wheel, an electric motor, a reduction gear transmitting rotation from the electric motor to the wheel, and a dampening structure connecting the wheel to a vehicle bearing member. The electric motor comprises an electric motor case. The reduction gear comprises a reduction gear case coupled to the electric motor case and rotatably mounted within the wheel hub. The electric motor case is connected to the bearing member of the vehicle and is displaceable relative to the bearing member. The invention improves dynamic properties to the vehicle, reduces vibrations transmitted to the vehicle body, and provides a more comfortable drive.

The invention discloses a biochip and a preparation method thereof, and a device using the biochip. The biochip comprises at least one detection unit and at least a group of biomolecule probes, and each detection unit comprises at least one detection pixel and at least one reference pixel, and responds to a group of identical biomolecule probes; each detection pixel comprises a semiconductor optical sensor in an arrayed semiconductor optical sensor and an optical filter in an arrayed optical filter, the optical filter totally covers the surface of the semiconductor optical sensor; each reference pixel comprises a semiconductor optical sensor in the arrayed semiconductor optical sensor; each optical filter is provided with a characteristic wavelength so that the wavelength in a predetermined width range with the characteristic wavelength as a center can be transmitted through the optical filter, but the wavelength out of the range can not be transmitted.

The present invention provides a highly-protective, heat dissipating LED light source module that may be waterproof or non-waterproof. In an embodiment, the present invention provides an LED light source module comprising: a waterproof housing comprising a metal substrate and a plastic cover integrally disposed on one or more surfaces of the metal substrate; and at least one light emitting diode, electronic component, and power line disposed on and operably connected with the metal substrate and encapsulated thereon by the plastic cover. In other embodiments are provided LED light source modules comprising: a circuit board with at least two through holes disposed at selected positions; at least one light emitting diode, electronic component, and power line disposed on the circuit board and operably connected therewith; and a plastic cover comprising at least two pins disposed and shaped for interconnection with corresponding through holes of the circuit board. The simple LED light source models disclosed may be efficiently and inexpensively produced and are capable of withstanding the harsh environments in which they are sometimes used.

A cable connector assembly (100) includes a housing defining a mating direction, a first housing piece (1) with a mating interface (11) formed thereon and a second housing piece (2) attached to the first housing piece (1) along the mating direction, a printed circuit board (3) received in the housing, and defining a mating portion (30) accessible from the mating interface (11) of the first housing piece (1), a cable (4) attached to the printed circuit board (3), and a latch (6) attached with the housing for locking the cable connector assembly (100) with a complementary connector.

The invention provides a flexible lead, a preparation method of a flexible electronic device and a flexible wireless energy supply device. The method comprises steps that a base material formed through combining a rigid substrate, a sacrificial layer and a functional film is provided; a femtosecond laser is utilized to cut the functional film of the base material such that the functional film is formed with a planar wire structure; the sacrificial layer is removed, and the planar wire structure is separated from the rigid substrate; a two-dimensional flexible wire is formed on the planar wirestructure; or the planar wire structure is assembled to a pre-stretched flexible substrate, pre-strain of the flexible substrate is released, and the planar wire structure is bent to form a three-dimensional flexible wire . The method is advantaged in that the flexible wire with high precision, large scale and no pattern limitation can be prepared, unique advantages of fast property, environmentalprotection, low cost, high resource utilization rate and insensitivity to the external environment can be further realized, and the method is suitable for preparing 2D and 3D flexible wires.

This disclosure provides methods of controlled polymerization of cyclic compounds catalyzed by carbene derivatives having a general formula as shown below, and to obtain a biodegradable polymeric material having a large molecular weight, a narrow dispersity, and no metallic impurity.

The invention discloses an organic light-emitting display device, which comprises a lower substrate, a packaging layer, at least one light extraction layer, an electrode layer, a light-emitting layer and a functional layer, wherein the electrode layer, the light-emitting layer and the functional layer are arranged between the lower substrate and the packaging layer, and a micropore structure is formed in the light extraction layer. The invention further discloses a manufacturing method of the organic light-emitting display device. The organic light-emitting display device is provided with the light extraction layer with the micropore structure, and enables light to be scattered repeatedly by micropores when getting into the light extraction layer through reasonably setting the position of the light extraction layer, thereby reducing internal reflection at the light extraction layer on the whole, and enabling more light to be extracted and emitted from the light-emitting device. Therefore, the light-emitting efficiency of the device can be substantially improved. In addition, the organic light-emitting display device can be manufactured in a large scale, is low in cost and has important practical application values.

The invention relates to a liquid (meth)acrylic syrup for impregnating a fibrous substrate. The invention especially relates to a viscous liquid syrup mainly containing methacrylic or acrylic components. The invention also relates to a method for producing such a syrup. The invention relates further to a method for impregnating a fibrous substrate or long fibers with said viscous liquid syrup. The invention also relates to a fibrous substrate pre impregnated with said syrup, which is useful for the production of mechanical or structured parts or products. The invention also relates to a production method for producing mechanical or structured parts or items and to three-dimensional mechanical or structured parts produced by said method. The invention allows significant reduction of the exothermic peak during the polymerization of the syrup, reduction of the residual monomer content at the end of the polymerization, and production of parts in a composite material without defects or with few defects.

The present invention belongs to the technical field of nanomedicine, and relates to a method for preparing a therapeutic protein-loaded nanoparticle, as well as a therapeutic protein-loaded nanoparticle, a suspension and a pharmaceutical composition comprising the nanoparticle, and a pharmaceutical preparation comprising the nanoparticle, the suspension or the pharmaceutical composition. The present invention further relates to a use of the nanoparticle in manufacture of a pharmaceutical composition, wherein the pharmaceutical composition is useful in prevention or treatment of a disease thatcan be prevented or treated by the therapeutic protein comprised in the nanoparticle.

The invention discloses an application of a Cu2MoS4 two-dimensional crystal and a saturable absorber device comprising the same. The saturable absorber device comprises a two-dimensional crystal packaged in a transparent container and used as a saturable absorber, and a substrate bearing the saturable absorber. The saturable absorber is a Cu2MoS4 two-dimensional layered crystal. A new material system with an excellent saturated absorption characteristic is discovered, and provides more opportunities for development of new saturable absorbers. The saturable absorber device has the advantages of being low in cost, being prepared in a large scale, having a small volume, and being capable of forming various types of mode locking devices, and can be applied to fields like pulse fiber lasers and so on.

A single-electron transistor using nanoparticles is provided. The single-electron transistor includes a first insulating film, a gate electrode patterned in a stripe form on the first insulating film, a second insulating film formed on exposed surfaces of the first insulating film and the gate electrode in such a way that a stepped portion is formed at a boundary between the gate electrode and the first insulating film, first and second electrodes formed on the second insulating film in such a way that a groove is formed at the stepped portion to expose a surface of the second insulating film, the first and second electrodes being separated from each other by the groove, and nanoparticles positioned at the groove and contacting with the first and second electrodes, the nanoparticles being channels for electron transfer. The single-electron transistor is manufactured using previously prepared nanoparticles and a general semiconductor process, thereby enabling low cost, mass production and operation at room temperature.