49results about How to "Self-assembly" patented technology

The invention relates to a preparation method of polystyrene / gold composite microspheres, which comprises the following steps: modifying polystyrene microspheres with a silane coupling agent, mixing with a chloroauric acid solution, and heating to carry out ionic selfassembly, wherein gold ions are fixed to the surface of the polystyrene microspheres through gold-nitrogen bonds; and after the solution is boiling, adding trisodium citrate to reduce the gold ions adsorbed onto the amino group in situ, thereby generating the core-shell structure in which a gold nanoparticle is coated on each polystyrene microsphere. The size of the gold particles and the coverage percentage of the gold particles on the polystyrene microspheres are controllable to some extent.

The invention relates to an organic field effect transistor with a dielectric modification layer, which belongs to the field of organic semiconductor devices and is characterized in that the organic field effect transistor comprises a grid electrode, a dielectric material layer, a zinc compound layer, an organic micromolecule self-assembly layer, an organic semiconductor material layer and a source-drain electrode, wherein the zinc compound layer is deposited by a solution method, and then, the organic micromolecule self-assembly layer is formed on the zinc compound layer by a self-assembly method, so the obtained zinc compound / organic micromolecule self-assembly layer is simultaneously used as the dielectric modification layer of the organic field effect transistor. When the dielectric layer of the organic field effect transistor is modified by the method, a device can show the current carrier mobility twice that of the ordinary device, and in addition, good light response characteristic can be given to the organic field effect transistor. The organic field effect transistor has wider application range in fields of organic photoelectric devices and multifunctional devices.

The invention provides a pancreatic-like structure and a construction method thereof. The construction method comprises the following steps: A, inducing stem cells and / or progenitor cells in vitro todifferentiate into pancreatic-like cell clusters; B, mixing the vascularized cells, the pancreatic-like cell clusters and a hydrogel material, and performing biological printing to obtain a pre-gel three-dimensional structure body; and C, culturing the pre-gel three-dimensional structure body by adopting a multi-cell culture solution and / or a bioreactor to obtain the pancreas-like structure body.The pancreatic-like structure provided by the invention is composed of vascularized cells and pancreatic-like tissue cells, and has the form, phenotypic characteristics and physiological functions ofnatural tissues. The method can be applied to the aspects of organoid construction, tissue / organ / human body chips, tissue engineering, regenerative medicine, in-vitro physiological model / pathologicalmodel / pharmacological model construction, cytobiology or drug research and the like.

The invention provides an automatic assembly type photodynamic drill based on multi-core fiber. The automatic assembly type photodynamic drill comprises front optical tweezers and a micro rotor formed by processed multi-core fiber. In solution the optical tweezers automatically captures the micro rotor to form a photodynamic drill. The micro rotor structure comprises a ball, a rotating shaft, a windmill like rotor structure composed of a plurality of wings and a cone tip, wherein the ball is at the top of the rotating shaft, the windmill like rotor structure composed of a plurality of wings is at the middle of the rotating shaft, and the cone tip is at the bottom of the rotating shaft. According to the invention, the micro rotor ball can automatically form a photodynamic drill once captured. The photodynamic drill has the advantages of convenient operation, simple structure, and easy control. The dimension of the photodynamic drill is micron-sized, and the rotating speed is easy to control from outside. The photodynamic drill can be applied to microbe punching such as cell wall punching. Accordingly, the automatic assembly type photodynamic drill based on multi-core fiber providesa strong tool for micro life science and biomedical researches.

The invention relates to construction and application of recombinant bacillus subtilis capable of synchronously secreting MTHase and MTSase. According to the construction and application disclosed bythe invention, self-assembly module plasmids pDGI-7S6-P43-PhoD-MTSase-spyCatcher-6xHis and plasmids pAX01-7S6-P43-PhoD-spyTag-linker-spyTag-MTHase-spyTag-6xHis are constructed; the constructed self-assembly module plasmids are transformed into B.subtilis WB800n thalli to obtain seamless integrative recombinant B.subtilis WB800n; and the recombinant strain is subjected to secretory expression and in vitro assembling of a MTSase-MTHase multienzyme complex body, and an experiment of dual-enzyme conversion for producing trehalose is performed, so that the conversion rate of the trehalose is increased to 81.5%.

The invention relates to a method for preparing monolayer self-assembling structure of nanorods, and in particular relates to a method for preparing a monolayer self-assembling structure of CdSe@Cds nanorods. The method comprises the following steps: smearing a CdSe@Cds nanorod solution onto a copper screen which is wrapped with a carbon film and used for a transmission electron microscopy for observation through a dripping and smearing method; and then performing the self-assembling of the CdSe@Cds nanorods on a carbon film substrate by a thermal annealing technology. Compared with the other self-assembling methods, the self-assembling method in a thermal annealing manner is simple in process and does not require complicated supplementary instruments such as a template and the like, thereby being suitable for large-scale preparation of superlattice structures; and more importantly, the method can be used for partially removing organic insulating molecules wrapping the surfaces of the nanorods so as to improve the electric conductivity of the nanorods. The method has the advantages that the method is novel, simple, low in cost and simple to operate; and the defect in the prior art that the large-scale preparation of the nanorods with self-assembled monolayers is not realized is overcome, so that the method has a good application prospect in the field of nanocrystalline photoelectric devices.

The invention discloses a far infrared radiation carbon fiber electric-thermal composite fabric and a preparation method thereof. The composite fabric comprises a far infrared radiation carbon fiber fabric arranged between two layers of flexible fabric matrixes; and an electrode plate is arranged in the far infrared radiation carbon fiber fabric. The preparation method comprises the following steps: pretreating the carbon fiber fabric to obtain a desized carbon fiber fabric; dipping the carbon fiber fabric in a dopamine solution to obtain a dopamine biomimetic modified carbon fiber fabric; spraying far infrared slurry on the dopamine biomimetic modified carbon fiber fabric to obtain a far infrared radiation carbon fiber fabric; and compounding all the layers to obtain the far infrared radiation carbon fiber electric-thermal composite fabric. The composite fabric prepared by the invention not only ensures the electric-thermal stability and heating uniformity of the fabric, but also hasgood far-infrared radiation performance, and can realize the application of the electric-thermal fabric in the fields of human body clothing, intelligent wearable articles, cold-proof thermal insulation materials, greenhouse heat sources and the like.

The invention discloses an in-situ self-assembled slapper ignition component and a preparation method thereof. Specifically, the in-situ self-assembled slapper ignition component comprises a pin equipped alumina ceramic substrate, a metal copper exploding foil, a Parylene C slapper layer, a photoresist structural layer and an acceleration chamber. The metal copper exploding foil is disposed on the alumina ceramic substrate, the Parylene C slapper layer is arranged on the metal copper exploding foil, the photoresist structural layer is disposed on the Parylene C slapper layer, and the acceleration chamber is disposed in the photoresist structural layer. The component provided by the invention has the characteristics of self-assembly and flexibility, and can meet the production needs of various slapper ignition components with different specifications. According to the invention, photoresist is applied to preparation of the acceleration chamber and tempering modification treatment thereon so as to further strengthen the mechanical properties. Thus, the acceleration chamber can effectively shear slappers.

The invention discloses a preparation method of a self-assembled hydrophobic light-reflecting and light-converting material, and belongs to the technical field of light-reflecting and light-convertingmaterials. The preparation method has the advantages that by applying a self-assembly method, directed plasma graft polymerization and other reactions are carried out to form a light-converting layer, then hydrophobic silica is gradually compounded with a light-reflecting layer to form layer-by-layer self-assembled films, formed polymerization layers fit flat, light reflecting can be carried outby relying on a silica layer, and the light is conducted to a silane light-converting layer, which achieves the purposes of light reflecting and light converting and achieves dual signal response andmultiple functions; by adopting the layer-by-layer self-assembly principle, the preparation method is simple, the sources of raw materials are wide, the labor intensity is reduced, the service life ofthe material is prolonged, the material has hydrophobicity, the accumulation of stains and water marks is avoided, and the material can be used in the fields of dual signal materials, optical energyconversion and the like.

The invention relates to a self-assembled CdTe quantum dot / SiO2 / TGA composite three dimensional nano-material and a preparation method thereof. The composite three dimensional nano-material is composed of a CdTe quantum dot, SiO2 and TGA, the TGA is modified on the surface of the CdTe quantum dot as a ligand, the TGA modified CdTe quantum dot surface is coated with a SiO2 layer, and the TGA is positioned between the CdTe quantum dot and the SiO2 layer; and the nano-material has a straw bale-shaped shape, the length of the nano-material is 200-300[mu]m, and the diameter of the center of the nano-material is 50-120[mu]m. The preparation method of the nano-material comprises the following steps: coating the TGA modified CdTe quantum dot with the SiO2 layer through using a gel-gel technology, dispersing the TGA modified CdTe quantum dot coated with the SiO2 layer in a PBS buffer solution, and self-assembling to obtain the CdTe quantum dot / SiO2 / TGA composite three dimensional nano-material with high luminance. The nano-material has a wide application prospect in the fields of sensors, luminescence devices and solar batteries.

The invention discloses an electric functional membrane and a preparation method thereof, and belongs to the field of the preparation of a composite material. The functional membrane is formed by alternately self-assembling an amphipathy ruthenium complex molecular membrane, a symmetric ruthenium complex molecular membrane and a graphene film, wherein a substrate is ITO conducting glass. The amphipathy ruthenium complex is [Ru(Py2G1MeBip)(XPOH)](PF6)2, and the symmetric ruthenium complex is [Ru(Py2G1MeBip)2](PF6)2; the functional membrane is uniformly and adequately decorated on the conducting substrate, the mechanical and chemical stability is good, the advantages of the three materials are integrated by the functional membrane, and the electrochemical performance and the stability are obviously improved; the electric functional membrane can be operated by utilizing a simple vessel under the room temperature, no special condition and no complicated and expensive vessel are needed, and compared with other layer-by-layer assembling technologies, the electric functional membrane is simple to operate, short in assembling time, not subjected to the influence of the material and shape of the substrate, high in combination strength with the substrate, high in waterproof stability and good in popularization and application values.

The invention discloses a composite film with high electrochemical performance and a preparation method of the composite film, and belongs to the field of composite material preparation. The composite film is formed by alternately self-assembling amphipathic ruthenium complex molecular films and symmetrical ruthenium complex molecular films, a highly oriented pyrolytic graphite(Highly Oriented Pyrolytic Graphite, HOPG) is used as a base, wherein an amphipathic ruthenium complex is [Ru(Py2G1MeBip)(XPOH)](PF6)2, and a symmetrical ruthenium complex is [Ru(XPOH)2](PF6)2. The composite film obtained by the preparation method disclosed by the invention is uniformly and sufficiently modified on the electric conduction base, so that the composite film has favorable mechanical stability and chemical stability. The composite film unifies the respective advantages of two kinds of materials, so that compared with a single self-assembly film, the electrochemical performance and the stability of the composite film are obviously improved. The composite film can be operated by using a simple container under a room temperature without special conditions or complex costly instruments. Compared with other layered assembly techniques, the composite film disclosed by the invention is simple and convenient to operate, is short in assembly time, is high in bond strength with the base, and has better popularization and application values.

The invention discloses an assembly of red blood cell-like colloid particles and spherical colloid particles as well as a preparation method and application of the assembly. The assembly is formed byembedding the spherical colloid particles in grooves of the red blood cell-like particles and assembling the spherical colloid particles and the red blood cell-like particles together; the particle size of the spherical colloid particles is 500 to 1300 nm; the particle size of the red blood cell-like particles is 1 to 5 mu m, the grooves are semispherical, and the diameter of the grooves is 600 to1500 nm; the particle size of the spherical colloid particles is 80 to 100 percent of the diameter of the grooves of the red blood cell-like particles. According to the assembly disclosed by the invention, high-compatibility self-assembly of the red blood cell-like particles and the spherical colloid particles is successfully realized, an assembly effect is increased to a large extent, and an excellent photonic crystal iridescence effect is expressed when the assembly is applied to a photonic crystal waterborne coating material; after the size and the structure of the assembly are regulated and controlled, more gorgeous color can also be obtained, and the assembly have great potential application value in waterborne coating materials.

The invention relates to a method for preparing a modified titanium dioxide doped thin film. The invention solves such problems of existing titanium dioxide thin films as difficult doping modification, poor doping effect and poor binding force between the thin film obtained by the existing layer-by-layer self-assembly technique and a substrate. The method comprises the following steps: preparing an early modified titanium dioxide doped thin film by the layer-by-layer self-assembly technique, and then obtaining the modified titanium dioxide doped thin film by heat treatment. The method has advantages of stable and reliable process, simple equipment, easy operation and realizable doping modification. The titanium dioxide thin film obtained by the method has good doping modification effect, band gap of the titanium dioxide thin film decreases to 2.8eV, and the thin film is bound tightly to the substrate by alkylation treatment. The modified titanium dioxide doped thin film can be appliedto photocatalytic water decomposition for hydrogen production.

The invention provides a preparation method of an OLED display panel and the OLED display panel. The OLED display panel comprises a plurality of pixels arranged in an array mode and spacing areas located among the pixels, and the preparation method comprises the following steps that an organic material layer is prepared on a light-emitting function layer, wherein the organic material layer and metal repel each other; performing exposure processing on the organic material layer corresponding to the spacing areas to modify the organic material layer to be not exclusive to metal; removing a part of the organic material layer corresponding to the spacing areas to form a plurality of first via holes; and preparing a first metal layer on the organic material layer, wherein the first metal layer is connected with the common electrode layer of a light-emitting function layer through the first via holes. According to the OLED display panel, the first metal layer is connected with the common electrode layer through the plurality of first via holes, so that the surface resistance of the common electrode layer can be reduced, and the in-plane brightness uniformity of the OLED display panel is improved.

The invention relates to a concrete repair agent. The concrete repair agent is prepared from, by weight, acrylic-based resin, an emulsifying agent, a penetrating agent and a diluting agent. The concrete repair agent is commonly known as a concrete solder and is a waterborne environment-friendly agent, and the concrete repair agent is capable of having cross-linking reaction with dust generated ina cement and concrete grinding process to enable re-setting and hardening, and defects of holes, cracks and the like of concrete repaired. By application of the concrete repair agent to new and old concrete combination faces, adhesion firmness of the new and old concrete combination faces can be remarkably improved, and concrete bulging, layering and shedding can be prevented. In addition, the concrete repair agent is simple in operation, early strength of concrete can be quickly improved, an integral construction period is shortened, and concrete compactness is improved to make it easy for grinding and polishing.

The invention provides a segmented guardrail type working table provided with an auxiliary working table. The segmented guardrail type working table comprises a main working table and the auxiliary working table, wherein the auxiliary working table is horizontally and fixedly mounted on the back of the main working table through telescopic guide rails, connecting columns are fixedly arranged on the back of the main working table, guide rail fixing support lugs are fixedly arranged on the connecting columns, the telescopic guide rails are mounted on the guide rail fixing support lugs, the mainworking table comprises a main table board, a segmented guardrail and at least one extension part joint, the segmented guardrail is fixedly arranged on the periphery of the upper end surface of the main table board, the at least one extension part joint is arranged on the upper end surface of the main table board, the height of the at least one extension part joint is smaller than or equal to thatof the segmented guardrail, and the auxiliary working table can be pulled out from any side of the main working table. The auxiliary working table is simple and convenient to mount is assembled by aclient on site simply, the segmented guardrail type working table meets use demands of a hospital, meanwhile, production cost is reduced, product quality is guaranteed, packing volume is reduced, andtransporting cost is reduced.

The invention relates to an organic field effect transistor with a dielectric modification layer, which belongs to the field of organic semiconductor devices and is characterized in that the organic field effect transistor comprises a grid electrode, a dielectric material layer, a zinc compound layer, an organic micromolecule self-assembly layer, an organic semiconductor material layer and a source-drain electrode, wherein the zinc compound layer is deposited by a solution method, and then, the organic micromolecule self-assembly layer is formed on the zinc compound layer by a self-assembly method, so the obtained zinc compound / organic micromolecule self-assembly layer is simultaneously used as the dielectric modification layer of the organic field effect transistor. When the dielectric layer of the organic field effect transistor is modified by the method, a device can show the current carrier mobility twice that of the ordinary device, and in addition, good light response characteristic can be given to the organic field effect transistor. The organic field effect transistor has wider application range in fields of organic photoelectric devices and multifunctional devices.

The invention discloses a temperature-sensitive spiral polyphenylacetylene derivative with a self-assembly characteristic, an assembly and a preparation method thereof. The structural formula of the derivative is shown as the specification, wherein m is equal to 0.05-0.7, n is equal to 1-m, and X is equal to Me and Et. According to the preparation method, two primitives with different hydrophilicity and hydrophobicity are grafted to a side group of phenylacetylene through alanine to obtain two hydrophilic and hydrophobic monomers, and the two monomers are copolymerized to obtain the spiral polyphenylacetylene derivative with the self-assembly characteristic. Due to the existence of the alanine primitive, the chirality of the alanine primitive is conducted to a polymer main chain to form asecondary ordered spiral conformation; the dendritic alkoxy ether primitive endows the derivative with hydrophilicity and excellent temperature-sensitive characteristics, and the alkane primitive endows the polymer with hydrophobicity. Therefore, the polyphenylacetylene derivative not only has excellent temperature sensitivity, but also can realize self-assembly on a solution or an interface through hydrophilic and hydrophobic difference between two repetitive units, and has potential application value in the fields of intelligent response materials and molecular devices.

The invention provides a combined work bench of a medical cart with an auxiliary work bench. The combined work bench comprises a main work bench and an auxiliary work bench, wherein the auxiliary workbench is horizontally and fixedly arranged on the back side of the main work bench through telescopic guide rails; guide rail fixing lugs are fixedly arranged on connecting posts on the back side ofthe main work bench; the telescopic guide rails are arranged on the guide rail fixing lugs; and the auxiliary work bench can be pulled out from any side of the main work bench. Through the mounting structure of the auxiliary work bench and the main work bench, the connection strength between the auxiliary work bench and the main work bench is greatly improved, and the auxiliary work bench can be freely drawn with low damping, and is convenient to disassemble and assemble. A table of the main work bench is provided with a segmented guardrail and extension component connectors, so that the function of the main work bench is improved; and the heights of the extension component connectors are smaller than or equal to that of the segmented guardrail, so that the segmented guardrail can preventthe extension component connectors from being broken due to collision in the transport process. According to the combined work bench, the production cost is reduced, the quality of a product is ensured, the usage requirements of a hospital are met and the combined work bench can be self-assembled.