149 results about "Self assemble" patented technology

The invention discloses a self-assembled monomolecular layer hole transport material, a hole transport layer and a battery thereof. According to the present invention, the compound having different anchoring groups and represented by the formula (I) can be subjected to firm self-assembly with the substrate surface through the chemical bonding manner, such that the good coverage rate is provided, the film forming quality is increased, and the transmission performance is improved; and meanwhile, the material has a rigid conjugate large-plane condensed ring core structure, so that the hole transmission performance of the material is ensured, and the photovoltaic performance is favorably improved. When the material is applied to a perovskite solar cell to prepare a hole transport layer, the hole extraction capability can be enhanced, and the open-circuit voltage, the filling factor and the photoelectric conversion efficiency of a device can be improved.

The invention relates to the technical field of energy-saving materials, and discloses a preparation method of a self-assembled multilayer radiation refrigeration film, the self-assembled multilayer radiation refrigeration film comprises: a surface coating composed of a super-hydrophobic coating and used for providing anti-fouling and self-cleaning functions; the top layer is composed of titanium dioxide nanoparticles and has high sunlight reflectivity; the middle layer is a polytetrafluoroethylene layer with a hierarchical porous structure and provides thermal insulation and efficient mid-infrared emission; the bottom layer is composed of graphene oxide, has high heat conduction performance and promotes heat transfer; and the substrate is a flexible polyester film PET and is used as a supporting structure. Through the titanium dioxide nano-particle design of the top layer and the graded porous structure of the middle layer, the film achieves the reflectivity exceeding 90% in the sunlight band (400-2500nm), meanwhile, the film has the radiance exceeding 85% in the middle infrared band (8-13mu m), and due to the optical performance, surface heat absorption can be remarkably reduced under the intense sunlight condition.

The invention belongs to the field of micro-nano structures, and relates to a preparation method of a single-layer disc 3D structure based on nano needle tip support. According to the method, the single-layer disc 3D structure supported by the nanometer needle tip is obtained through an electron beam thermal evaporation system, a self-assembly technology and reactive ion etching, the preparation process is simple, cost is low, repeatability is good, structural stability is good, and tolerance is high. Compared with a metasurface supported by a silicon substrate, the metasurface provided by the invention has the advantages that the transient signal oscillation modulation capability of the metasurface is greatly improved by the needle point support, the opto-mechanical conversion efficiency and the oscillation quality are remarkably improved, and the quality factor is improved by several orders of magnitude compared with that of a common silicon substrate.

The invention discloses a high-performance anti-dazzle coating as well as a preparation method and application thereof. The core technology of the coating is to form a uniform film with a micro-nano composite structure on the surface of a base material through a self-assembly film forming process by utilizing nano quartz powder with specific particle size distribution. The coating has excellent optical performance, the light transmittance reaches up to 92% or above, and the haze is strictly controlled to be 5% or below. The unique microstructure can effectively scatter strong incident light (such as sunlight and vehicle lamps), significantly reduce dazzling glare, and maintain high definition of the base material and high reflective (or self-luminous) visibility of the identification itself, so that an observer can clearly and comfortably identify target information. The method is simple in process, controllable in cost, environment-friendly and particularly suitable for the fields of traffic safety, public facility identification, display screen protection and the like.

The invention discloses a carbon-based electrode-microorganism self-assembled compound, a preparation method thereof and application of the carbon-based electrode-microorganism self-assembled compound in strengthening anaerobic fermentation of agricultural wastes. The compound is formed by self-assembly of direct interspecific electron transfer (DITE) functional microorganisms (anode reduction geobacter and methanobacterium flexural) on the surface of a high-conductivity carbon-based electrode under the induction of a micro electric field, the relative abundance of the anode reduction geobacter is 65-82%, and the relative abundance of the methanobacterium flexural is 18-35%. During preparation, the carbon-based electrode is cleaned by acetone, ethanol and water, then the carbon-based electrode, a reference electrode and a counter electrode form a three-electrode system, and the three-electrode system is induced for 3-5 days in a micro electric field of-0.2-0.2 V to form a compound. 1-5 g / L of the compound is added into a straw-excrement mixed substrate (25-40 g VS / L) subjected to alkali pretreatment, anaerobic fermentation is conducted for 50 d after biogas slurry is inoculated, the pH can be stably maintained at 7.2-8.0, the accumulated biogas yield reaches up to 450-630 mL / g VS, and the volume fraction of methane is 68-82%. The process is simple, the compound is high and stable in activity, and efficient resource utilization of agricultural waste can be achieved.

The invention discloses a fluorenyl diphosphoric acid type self-assembled monomolecular layer hole transport material which takes a fluorene unit as a core and a diphenylamine group as a donor, and is a self-assembled monomolecular layer hole transport material with two phosphoric acid anchoring groups. The preparation method of the hole transport material comprises the following steps: (a) carrying out substitution reaction on 2, 7-dibromofluorene and dibromo-substituted alkane to obtain an intermediate I; (b) carrying out rearrangement reaction on the intermediate I and triethyl phosphite to obtain an intermediate II; (c) carrying out coupling reaction on the intermediate II and a diphenylamine derivative to obtain an intermediate III; and (d) mixing the intermediate III with a hydrolysis reagent, and carrying out hydrolysis reaction to obtain the fluorenyl diphosphonic acid type self-assembled monomolecular layer hole transport material. The invention also discloses an application of the material in a trans-perovskite solar cell. The hole transport material is low in synthesis cost and simple in route, has dual functions of hole transport and defect passivation, and has two phosphate groups to enhance the self-assembly strength and stability of the hole transport material.

The invention provides a battery predictive maintenance method based on a self-assembly neural network and a large language model, and relates to the technical field of battery maintenance, and the method comprises the steps: collecting original sensor data corresponding to target battery equipment; inputting the original sensor data into a battery predictive maintenance model obtained by pre-training; wherein the battery predictive maintenance model comprises a self-assembly neural network and a large language model; and extracting initial feature information of the original sensor data, extracting time sequence-space joint features corresponding to the initial feature information through the self-assembled neural network, and generating a battery predictive maintenance report corresponding to the target battery equipment based on a pre-constructed battery maintenance knowledge base and the time sequence-space joint features through a large language model. According to the invention, the prediction precision of battery predictive maintenance can be obviously improved.

The invention discloses an aptamer electrochemical biosensor for estradiol detection as well as a preparation method and application of the aptamer electrochemical biosensor. The aptamer electrochemical biosensor is obtained by growing AuNPs particles on the surface of MoS2 to prepare a MoS2-AuNPs composite material, fixing the composite material on the surface of an electrode through chitosan, hybridizing aptamer probes P1 and P2, and self-assembling the aptamer probes P1 and P2 on the surface of the electrode through Au-S bonds. The sensor can be used for in-situ detection of hormone factor estradiol in sweat, can be applied to non-invasive monitoring equipment, and provides reliable and timely monitoring data.

The application provides a method for widening the effective bandwidth of a wave-absorbing material, and comprises a preparation method of a composite material: mixing magnetic metal hydrotalcite and expanded graphite into a multiphase fluid, then introducing the multiphase fluid into a high-speed shearing microcavity in a circulation mode, using the high-speed fluid boundary layer shearing force to realize the interlayer peeling of the magnetic metal hydrotalcite and the expanded graphite, and self-assembling into a two-dimensional / two-dimensional stacked sheet-shaped magnetic particle / few-layer graphite electromagnetic wave absorbing powder. The application proposes a two-dimensional / two-dimensional structure formed by sheet-shaped magnetic nanoparticles and few-layer graphite for a carbon-based magnetic particle composite material. The two-dimensional electron gas is easy to form at the interface, and the resonance loss different from the interface relaxation can be realized by the resonance of the plasmon and the incident microwave. On the other hand, the magnetic performance of the sheet-shaped magnetic nanoparticles can be secondarily regulated, the mode of Aharoni exchange resonance is changed, the dielectric loss and the magnetic loss are improved in an integrated manner, and the effective bandwidth of the material for absorbing electromagnetic waves is widened.

The present invention relates to the technical field of lithium-ion battery materials, and specifically relates to a polyoxometalate intercalated hydrotalcite aramid-coated lithium-ion battery separator and a preparation method thereof. The preparation method is as follows: preparing polyoxometalate intercalated hydrotalcite by a peeling and recombination method: adding hydrotalcite into formamide, vigorously stirring under the protection of an inert gas to obtain a suspension, centrifuging the suspension to obtain exfoliated hydrotalcite lamellae, then adding a polyoxometalate aqueous solution to the exfoliated hydrotalcite lamellae and stirring for self-assembly, and finally performing solid-liquid separation to obtain polyoxometalate intercalated hydrotalcite; mixing the polyoxometalate intercalated hydrotalcite with an aramid slurry uniformly to obtain a polyoxometalate intercalated hydrotalcite aramid-coated slurry; coating the polyoxometalate intercalated hydrotalcite aramid-coated slurry on the surface of a base film, passing through a coagulation bath and then drying to obtain a polyoxometalate intercalated hydrotalcite aramid-coated lithium-ion battery separator. The lithium-ion battery separator has higher thermal stability, and the preparation method is simple and has strong practicability.

The invention discloses a guide self-assembly photoetching guide template optimization method based on deep learning. Firstly, a Latin hypercube sampling method is used for sampling in a certain guide template parameter range; and obtaining a training set and a test set according to the sampled parameters by using the guided self-assembly photoetching model. A deep neural network is trained by using a training set and a test set, and the network is directly deployed in guide template optimization of guide self-assembly lithography to replace a guide self-assembly lithography model in the prior art. One-time forward reasoning of the neural network is used for replacing a simulation model, the speed of solving the guide self-assembly photoetching guide template graph can be remarkably increased, and the reverse design efficiency is improved. According to the method, the deep neural network is trained by utilizing the three-dimensional oriented self-assembly photoetching physical simulation data, the three-dimensional information of the self-assembly structure is reserved in network output, the physical information loss is reduced while the speed is ensured, and the result is more accurate.

A structural body (100) according to the present invention has a structure capable of self assembly, said structural body comprising: a substrate (101); a sacrificial layer which is formed on one main surface of the substrate; and a laminate (103) which is formed on the sacrificial layer and which is obtained by laminating a conductor layer and a dielectric layer, wherein an outer peripheral part of the laminate (103) has a bending region (R1) that bends along with self assembly and a non-bending region (R2) that does not bend, and the laminate (103) has a plurality of through holes (106) that are arranged along the non-bending region (R2) of the outer peripheral part and that pass therethrough in the lamination direction.

The application discloses a kind of photochromic circular polarized luminescent carbon dots long afterglow composite materials and preparation method and application thereof, belong to chiral luminescent functional material technical field;The composite material with photochromic and long afterglow luminescence characteristics carbon dots as luminescent center, and with cellulose nanocrystal through self-assembly to form chiral composite system with cholesteric helical structure.Carbon dots provide fluorescent emission, photochromic and long afterglow luminescence characteristics, while the chiral structure of cellulose nanocrystal can selectively circularly polarized modulation to luminescence, so as to realize the enhancement of circular polarized luminescent signal.The composite material can realize reversible photochromic luminescence behavior under ultraviolet irradiation, and produce long afterglow emission after excitation stops, while showing obvious circular polarized luminescence characteristics.The material has the advantages of stable structure, simple preparation method, high functional integration, etc., and has good application prospect in information anti-counterfeiting, optical encryption, chiral optoelectronic devices and intelligent display fields.

The invention provides a contact lens for treating xerophthalmia and a preparation method thereof, and belongs to the technical field of medical instruments. The contact lens comprises a contact lens base body and a functional coating fixed on the surface of the contact lens base body, the functional coating is fixed on the surface of the contact lens substrate through a self-assembly technology or a chemical grafting technology; the functional coating comprises a medicine carrying layer and a slow-release regulation and control layer. The surface functionalized coating technology is adopted, the medicine carrying layer and the slow-release regulation and control layer are sequentially constructed on the contact lens base body, a complex micro-channel or cavity structure does not need to be designed in the lens, the process is simple and convenient, large-scale production is easy, and meanwhile the original optical performance and mechanical strength of the lens are not affected.

The present invention relates to the technical field of liquid crystal device preparation, and in particular to a preparation method for a self-assembled vertical alignment film, comprising: preparation of self-assembly solutions: dissolving poly(diallyldimethylammonium chloride) in deionized water to prepare a self-assembly solution A with a concentration of 0.5-10%, and dissolving long-chain alkyl sodium sulfonate in deionized water to prepare a self-assembly solution B with a concentration of 0.02-0.2 mg / mL; cleaning a substrate, and immersing same in the self-assembly solution A for 20-30 h; taking out the substrate, washing with deionized water, and blow-drying with high-purity nitrogen; then immersing the substrate in the self-assembly solution B for 5-100 min; taking out the substrate, washing with deionized water, and blow-drying with high-purity nitrogen; and when a film is prepared, carrying out surface alignment by using a rubbing method, to obtain the self-assembled vertical alignment film. The present invention has the advantages that a self-assembled film can be formed by immersing, in self-assembly solutions, a substrate modified with specific chemical materials, the preparation method is simple, and the stability is good.

The application relates to a kind of foldable band-pass filters based on polyimide flexible substrate.The filter adopts coplanar waveguide structure, and is prepared using self-assembly technology.It is tested that the filter center frequency is 2.5 GHz, the relative bandwidth is 15.9%, the minimum insertion loss is 0.71 dB, and the in-band return loss is greater than 20 dB.The performance of the filter is basically consistent in flat, curved and folded states.The flexible filter prepared using the self-assembly technology is expected to become one of the components of future flexible communication systems.

The application relates to a preparation method of high-quantum-yield tetraphenyl ethene oxonium salt / polyoxometalate fluorescent nanomaterial and application of the nanomaterial in a white light LED lamp. 10 The self-assembly in an aqueous solution is convenient and fast, and a novel fluorescent nanomaterial with environment-friendly characteristics is prepared. The fluorescent material has good light emitting properties, and the fluorescence quantum yield is 39.88%, which is increased by 2.18 times compared with that of original TPE-1. Through mixing of a low amount of the fluorescent material and commercial fluorescent powder, a white light fluorescent powder under 365nm can be obtained, and the fluorescent powder can be used for LED lamp manufacturing.

The invention discloses an electrode material based on an MXene / PEDOT porous membrane and a preparation method and application thereof, and belongs to the technical field of supercapacitor electrode materials. The electrode material comprises a flexible ITO-PET substrate and an MXene / PEDOT porous membrane on the flexible ITO-PET substrate, the ITO-PET flexible substrate is beneficial to improving the bending resistance of the electrode material, the porous structure can inhibit re-stacking of MXene and improve the electrochemical performance of the electrode material, and the electrode material shows high specific capacitance and long cycle stability. The preparation method comprises the following steps: combining simple physical blending with self-assembly and ion exchange processes, coating MXene and PEDOT with an amphiphilic substance to prepare compounds, mixing the two compounds as a pouring liquid, preparing an MXene / PEDOT-based porous membrane through the self-assembly process, removing the amphiphilic substance through the ion exchange process to prepare the MXene / PEDOT porous membrane attached to ITO-PET, and preparing the MXene / PEDOT porous membrane attached to the ITO-PET through the self-assembly process. The porous membrane can be used for constructing a supercapacitor, and the method has the advantages of simplicity, convenience, low cost and environmental friendliness.

The invention provides a photomask manufacturing method based on guided self-assembly. Advanced node high-end photomasks with high graphic quality can be prepared with high production flux. Comprising the steps of forming a first photoetching pattern and a second photoetching pattern; a random copolymer filling step: coating a random copolymer to fill gaps of the second photoetching pattern, and performing first annealing treatment to enable the upper end surface of the random copolymer to be flush with the upper end surface of the second photoetching pattern; a block copolymer guided self-assembly step: coating the random copolymer and the second photoetching pattern with a block copolymer, carrying out second annealing treatment, guiding the block copolymer to carry out self-assembly to form a first block pattern and a second block pattern, and preferentially self-assembling the second block pattern on the upper end surface of the second photoetching pattern; a first block pattern removal step of selectively removing the first block pattern; and a pattern transfer step: taking the second block pattern as a hard mask layer, and transferring the second block pattern to the random copolymer and the photomask substrate.

The present invention discloses a lateral merging epitaxial growth method and application of a GaN thin film with a low dislocation density. The lateral merging epitaxial growth method includes: providing a growth substrate with a surface material being a doped GaN material, and the doping element including Si; performing a nitridation treatment to self-assemble a plurality of SiN x mask structures at dislocation sites; and continuing with epitaxial growth to form a GaN thin film with a low dislocation density. In the present invention, an enrichment of Si elements is formed at the dislocation sites of the GaN material, and through the nitridation treatment, the SiN x mask structures are specifically covered on the surfaces of the dislocations during growth, forming a shielding and covering of the dislocations, so as to avoid the extension of dislocations into the GaN epitaxial layer during the subsequent GaN vertical epitaxial growth and lateral merging epitaxial growth processes. Thereby, the dislocation density in the GaN epitaxial layer is greatly reduced. At the same time, there is no need for a patterned mask and the corresponding patterned etching process, and the complexity and cost are both relatively low, which is suitable for large-scale production applications.

The invention discloses an antibacterial packaging material and a preparation method thereof, and relates to the technical field of functional packaging materials. When the antibacterial packaging material is prepared, polyvinyl alcohol reacts with 4-carboxybenzaldehyde under the catalysis of hydrochloric acid to prepare carboxylation modified polyvinyl alcohol; the preparation method comprises the following steps: acylating cellulose nanofibers by using 6-bromohexanoyl chloride, and then reacting with 1-octyl imidazole to prepare quaternized modified nanofibers; carboxylation modified polyvinyl alcohol and quaternization modified nanofibers are subjected to electrostatic self-assembly to form a film, and a self-assembly composite film is prepared; and treating the self-assembled composite film with a zinc chloride / sodium bicarbonate composite solution to obtain the antibacterial packaging material. The antibacterial packaging material prepared by the invention has efficient antibacterial property, excellent mechanical strength and controllable degradability, and is suitable for the field of food and medicine packaging.

The invention provides a method of forming a patterned structure. The method includes the following operations. The photoresist layer on the target layer is patterned to form a first opening in the patterned photoresist layer. A directed self-assembly layer is formed on the patterned photoresist layer and in the first opening, wherein directed self-assembly material in the directed self-assembly layer is separated into a first phase on the patterned photoresist layer and a second phase in the first opening by attraction by polarity of the patterned photoresist layer. The second phase is removed to form a second opening through the directed self-assembled layer. The target layer is etched through the second opening. According to the invention, when the photoresist material is patterned, the photoresist material can be very thin to prevent standing waves of light from staying in the photoresist material to influence the formed pattern, so that the pattern of the photoresist material can be formed as expected and transferred into the directed self-assembly material; and when the patterned photoresist material and the directed self-assembly material are used for etching the target layer, the pattern formed by the target layer can meet the expectation.

This invention relates to the field of dielectric materials and energy storage materials, specifically to a self-assembled nanoscale multi-interface all-polymer nanostructure dielectric thin film and its preparation method. The composition of the thin film material meets the following requirements: the mass ratio of thermoplastic resin to bismaleimide resin is 95:5-65:35; the amount of catalyst added is 0.05wt%-2wt% of the weight of the bismaleimide resin. The thin film provided by this invention can meet the application requirements at 150℃ and above 600MV / m. The thermoplastic resin component in the film imparts good flexibility, suitable for the winding and stacking processes of thin film capacitors; while the bismaleimide (BMI) nanoscale multi-interface structure effectively blocks charge injection and excitation, significantly reducing leakage current under high temperature and strong electric field conditions, thereby improving its dielectric energy storage performance under high temperature and strong electric field conditions.

The invention discloses a controllably prepared gold nanorod self-assembled array SERS (Surface Enhanced Raman Scattering) substrate as well as a preparation method and application thereof, and relates to the technical field of SERS (Surface Enhanced Raman Scattering) detection. The substrate comprises a silicon wafer and a surface self-assembled PVP modified gold nanorod array (the length-diameter ratio is 2.5 / 3.1 / 3.5 / 4.2, optimally 3.5), and the array is a continuous compact single-layer film and is excellent in uniformity and reproducibility. The preparation method comprises the following steps: synthesizing gold nanorods by adopting a seed crystal method, and preparing the substrate through three-phase self-assembly (dispersion liquid, dichloromethane, water and normal hexane); during application, a honey sample is pre-treated by a Carrez reagent and then is applied to a substrate, 785nm laser Raman detection is carried out (the characteristic peak is 1524cm <-1 >), the standard substance detection limit is 0.1 mg / L, the honey detection limit is 1mg / L, the adding standard recovery rate is 73.32%-95.92%, and the method is suitable for accurate detection of honey 5-HMF.

The present invention relates to the field of prefunctionalized nanoparticles (NPs). More particularly, the present invention relates to NPs prefunctionalized with self-assembled monolayers (SAMs) and functionalized with biomolecules such that the NPs are stable in solution. These NPs can be used in many applications, particularly as diagnostic tools, tools for depleting molecules of interest in solution, and therapeutic tools.

A display device according to an exemplary embodiment of the present invention includes: a substrate; a plurality of first assembly lines extending along a column direction on the substrate; a plurality of second assembly lines extending along the column direction on the substrate and disposed adjacent to the plurality of first assembly lines; a plurality of first assembly electrodes connected to the plurality of first assembly lines; a plurality of second assembly electrodes connected to the plurality of second assembly lines and facing the plurality of first assembly electrodes; a plurality of transistors electrically connected to each of the plurality of first assembly lines and the plurality of second assembly lines; and a plurality of assembly pads connected to the plurality of transistors, the plurality of transistors being configured to transmit voltage from the plurality of assembly pads to the plurality of first assembly lines and the plurality of second assembly lines. Therefore, voltage can be selectively applied to each of the plurality of assembly lines by using transistors, and the self-assembly regions of light-emitting diodes can be configured in various positions and sizes.

The present invention belongs to the field of micro-nano structures and relates to a preparation method of a single-layer disc 3D structure supported by nano-tips. This method obtains a single-layer disc 3D structure supported by nano-tips through an electron beam thermal evaporation system, self-assembly technology, and reactive ion etching. Not only is the preparation process simple, low-cost, and highly repeatable, but also the structure has good stability and high tolerance. Compared with the metasurface supported by a silicon substrate, the tip support greatly improves the transient signal oscillation modulation ability of the metasurface, significantly improves the optomechanical conversion efficiency and oscillation quality, and the quality factor is improved by several orders of magnitude compared with the ordinary silicon substrate.

The invention provides a guide self-assembly method, which can effectively remove guide template photoresist below a guide self-assembly pattern to form a high-resolution pattern. Comprising the following steps: annealing a block copolymer, and guiding the block copolymer to self-assemble to form a first block pattern and a second block pattern of which the etching rate is lower than that of the first block pattern; removing the first block pattern to expose the upper end surface of the first photolithographic pattern to the outside; heating the first photoetching pattern, and carrying out pre-etching on the upper end surface of the first photoetching pattern by utilizing pre-etching gas; and transferring the second block pattern to the block copolymer auxiliary layer through etching treatment by taking the second block pattern as a mask, and further transferring the second block pattern to the substrate.

The application discloses a straw confined self-assembly cobalt oxide three-dimensional composite material and a preparation method and application thereof, and belongs to the technical field of gas-sensitive materials. x The method is characterized in that natural straw is used as a hard template, a small amount of Ti3C2T x nanosheets and clay nanosheets are premixed to form a composite network, and then a cobalt salt and a nitrogen source are added to obtain a precursor solution; the precursor is filled in the straw pipeline through vacuum impregnation, and then one-step air calcination is performed to completely pyrolyze and remove the straw template, in-situ convert the cobalt salt into porous Co3O4, and copy the straw pipeline morphology, so that the porous Co3O4 particles are finally uniformly loaded on the surface of the small amount of Ti3C2T x nanosheets. The obtained composite material has high response value, fast response recovery rate and excellent selectivity to NO2 at a working temperature of 70-130 DEG C, and has wide application prospects in the fields of environmental monitoring and industrial safety.