43 results about "Nanoparticle deposition" patented technology

The present invention relates to the field of fiber materials, and discloses a UHMWPE composite fiber with a functional coating and a preparation method thereof. The composite fiber comprises a UHMWPE fiber bundle with a three-dimensional woven structure, and a phenolamine co-deposition modification layer, an inorganic functional nanoparticle deposition layer, and a silk fibroin / polylysine cross-linked porous layer sequentially coated on the surface of the fiber bundle. The present invention sequentially deposits phenolamine and NPs on the surface of the UHMWPE fiber bundle with a three-dimensional woven structure, then constructs a silk fibroin coating with a microporous structure on the surface of the inorganic functional nanoparticle deposition layer to coat the NPs to improve the stability of the NPs, and then self-assembles polylysine with an antibacterial effect with the silk fibroin through electrostatic adsorption, and finally forms a silk fibroin / polylysine cross-linked porous layer after cross-linking. The UHMWPE composite fiber of the present invention has excellent mechanical properties, stability, antibacterial properties and bone regeneration promoting properties.

The invention discloses a surface-enhanced Raman detection method based on laser-induced deposition, and belongs to the technical field of micro-nano particle deposition and detection. According to the method disclosed by the invention, the gold nanoparticles and the to-be-detected particles are driven to be enriched and precisely deposited to a target area by utilizing laser local heating, and Raman detection is synchronously carried out, so that high-sensitivity detection on trace substances is realized. According to the method, the problems of uneven particle deposition, uncontrollable signal enhancement and the like in the traditional surface enhanced Raman scattering substrate preparation are solved, meanwhile, the requirement of an extra laser source in a traditional detection method is avoided, and integration of laser deposition and detection is realized.

A system for the synthesis of a cost-effective photocatalyst based on the FeOOH / CuBi2O4 heterostructure, consisting of: a) a CuBi2O4 synthesis plant for the production of CuBi2O4 (CBO) microspheres from Bi(NO3)3·6H2O and Cu(NO3)2.3H2O precursors; b) a heterostructure formation unit is configured to deposit FeOOH nanoparticles onto an outer surface of the CBO microspheres to form an FeOOH / CBO heterostructure; and c) a processing unit configured to wash and dry the FeOOH / CBO heterostructure to obtain the photocatalyst.

The invention provides a spherical silicon-based composite material and a preparation method thereof, a negative electrode and a battery, and relates to the technical field of silicon-based composite materials, the spherical silicon-based composite material comprises phenolic resin microspheres, a conductive agent and silicon nanoparticles, the phenolic resin microspheres are doped with the conductive agent to form a matrix of the spherical silicon-based composite material, and the silicon nanoparticles are doped with the conductive agent to form the spherical silicon-based composite material. The phenolic resin microspheres are of a regular spherical structure, grooves or protrusions or the combination of the grooves and the protrusions are arranged on the outer surfaces of the phenolic resin microspheres, the conductive agent is evenly dispersed in the phenolic resin microspheres, and part of the conductive agent is dispersed on the outer surfaces of the phenolic resin microspheres. The matrix is activated to form porous carbon microspheres with discontinuous porous channels or pores, and the silicon nanoparticles are deposited in the porous channels or pores. The problems that the ion conduction rate of the spherical silicon-based composite material is reduced and the conductivity is reduced can be solved, so that the first efficiency and the cycle stability of the spherical silicon-based composite material are improved.

The invention discloses a method for preparing a water inlet separation net loaded with copper oxide nanoparticles and having a self-cleaning function, and particularly relates to a method for preparing the water inlet separation net with the self-cleaning function by constructing a dopamine coating on a polypropylene separation net and then loading the copper oxide nanoparticles. The preparation method comprises the following steps: introducing a dopamine solution to the surface of a polypropylene separation net to form a polydopamine coating, chelating Cu by using surface functional groups of the polydopamine coating, then forming Cu (OH) in an alkaline environment, and further converting the Cu (OH) into CuO nano-particles to be deposited on the surface of the separation net; the finally prepared functional separation net is stable in structure, has self-cleaning capability, and can effectively slow down pollution in roll-type reverse osmosis and nanofiltration membrane elements.

To provide an optoelectronic device having a nanoparticle deposition layer.SOLUTION: The layered semiconductor device includes at least one grain structure disposed on an underlying layer comprising a grain material in contact with a contact material selected from a seed material, a co-deposited dielectric material, and / or at least one patterning material. A method for controllably selecting formation of at least one grain structure on an underlying layer during fabrication of a device includes depositing at least one layer comprising the underlying layer and exposing a surface thereof to a flux of grain material that contacts a contact material and coalesces to dispose the at least one grain structure on the underlying layer.SELECTED DRAWING: Figure 1

The invention relates to the technical field of carbon fiber surface modification, in particular to modified carbon fiber, a modified carbon fiber reinforced composite material and a preparation method of the modified carbon fiber reinforced composite material. The carbon fibers are subjected to dual composite modification through magnetic field-assisted electrophoretic deposition and ultrasonic-assisted impregnation, so that the surface performance of the carbon fibers is improved, and rich functional groups are introduced; meanwhile, a magnetic field assisted electrophoretic deposition method is adopted, a uniform electric field is formed, and the deposition efficiency and uniformity of electrophoretic deposition are improved; an ultrasonic-assisted impregnation process is adopted, so that aramid nanofibers, MXene, graphene oxide, carbon nanotubes or chitosan are prevented from being agglomerated on carbon fibers, and nanoparticles are more uniformly deposited. The interface bonding force between the carbon fibers and the thermoplastic resin is improved through the uniformly deposited modified substances and dual modification synergism, and the interlayer shear strength of the composite material is improved.

Systems and methods are provided to accurately model nanoparticle deposition in human or animal vasculature while reducing computational costs though a number of specific algorithmic improvements. These methods can be used to virtually evaluate the effects of variations in the nanoparticle configuration (e.g., size, geometry, binding target and / or affinity) and / or timing of delivery (e.g., relative to a patient's circadian rhythm), allowing those properties to be improved in order to increase the nanoparticle dose delivered to an anatomical target and / or to reduce side effects by reducing the total nanoparticle dose used to obtain a specified therapeutically effective level of deposition at the anatomical target. The accuracy and reduced computational cost of these methods allows the simulation to be re-run based on individual patients' data (e.g., MRI or otherwise-obtained maps of vascular geometry), allowing the nanoparticle configuration and / or dosing to be adapted on a per-patient basis.

The application discloses a kind of implant piezoelectric nano coating and its preparation method and application.The nano coating is composed of nano-flower-shaped barium titanate and gold nanoparticles loaded on its surface.In this application, gold nanoparticles are deposited on nano-barium titanate at high temperature by using the method of sodium citrate reducing tetrachloroauric acid. The nBTO@Au prepared by this method has obvious osteogenesis and antibacterial properties. The application provides a high reactivity, catalytic and non-invasive immediate treatment mode for peri-implantitis, which has wide application potential in implant post-disinfection, peri-implantitis treatment and improving implant survival rate.

The present invention belongs to the field of photocathodic protection. Specifically, the present invention relates to a CdS / rGOQDs / TiO2 branched nanowire array composite photoelectric film, its preparation method, and application. A TiO2 nanowire array substrate film with a branched structure is constructed by a simple in-situ hydrothermal method. Then, rGO quantum dots and CdS nanoparticles are deposited thereon by constant current cathode reduction deposition and continuous ion layer adsorption reaction, thereby constructing a CdS / rGO QDs / TiO2 branched nanowire heterojunction photoelectrode with sufficient interface contact. Under simulated sunlight irradiation, the composite film can achieve photocathodic protection for a variety of metal materials (such as 316L SS and Cu) in seawater, and has the advantages of simple operation and high photoelectric conversion efficiency.

The present invention provides a NO2 sensor based on quantum dot-assembled SnO2 nanoparticles and a preparation method thereof, belonging to the technical fields of NO2 sensors and quantum dot nanomaterials, including a sensor device substrate, interdigital electrodes from bottom to top, and a gas-sensitive layer formed by depositing SnO2 nanoparticles; the SnO2 nanoparticles are of a porous structure, with a size of 20-200 nm, assembled from SnO2 quantum dots, and are prepared by the solvent evaporation method of acetylacetone chelating agent in sequence, pyrolyzing at a heating rate of 1-3 °C / min to 300-350 °C for 3-5 h under nitrogen, and annealing at a heating rate of 5-10 °C / min to 450-500 °C for 0.5-1.5 h under air; the size of the SnO2 quantum dots is 4-6 nm. The NO2 sensor of the present invention can work at room temperature, has the advantages of fast response / recovery speed, wide detection range, ultra-low detection limit and ultra-high sensitivity, and has ultra-high selectivity for NO2.

The embodiment of the invention discloses a circular polarization waveguide device, a preparation method and application. The preparation method comprises the following steps: alternately depositing two or more materials with different refractive indexes on a substrate to form a reflector substrate with a periodic multilayer film structure; assembling a light-emitting gain medium on the reflector substrate to obtain a light-emitting layer; metal chiral nano-particles are deposited on the light-emitting layer to serve as a coupling incident end of circularly polarized light conduction, and achiral metal nano-particles are deposited on the light-emitting layer to serve as a coupling emergent end of circularly polarized light conduction. According to the invention, the light-emitting layer is arranged between the chiral plasmon particles and the emitter substrate surface guide mode, and the achiral nanoparticles are used as coupling output ends, so that remote directional transmission of optical signals and enhancement of coupling efficiency are realized without an additional waveguide structure.

The application discloses a kind of touch screen cover plate multicolor connection printing processes, comprising the following steps: using design software design the pattern of touch screen cover plate, prepare suitable substrate, prepare nanoparticle deposition ink, print the conductive pattern of bottom layer on substrate surface, accurate alignment is carried out to the conductive pattern of bottom layer of inkjet printing, the printed conductive pattern of bottom layer is heat treated, color pattern is printed on the conductive pattern of bottom layer, thin layer of conductive is deposited on the color pattern of jet printing, heat treatment and solidification.The application adopts nanoparticle deposition technology and inkjet printing technology, can realize higher resolution, richer color selection and more delicate pattern performance, the conductive coating prepared by nanoparticle deposition technology has good adhesion and durability, because nanoparticle can form uniform, dense coating structure on substrate surface, and is closely combined with substrate surface, so as to improve the adhesion and durability of coating.

The present invention relates to a method for preparing a TiO2 plasma composite electrode modified with Au nanoparticles. The method comprises the following steps: (1) preparing a planar or curved TiO2 electrode: using spray pyrolysis to prepare a TiO2 electrode or a SiO2@TiO2 two-dimensional photonic crystal on an ITO glass substrate; (2) depositing Au nanoparticles: using vacuum evaporation to deposit Au nanoparticles on the substrate in a single step, strictly limiting the evaporation rate, to produce the Au nanoparticle-modified TiO2 plasma composite electrode. This preparation method optimizes the Au nanoparticle deposition process, avoiding the subsequent high-energy calcination process that affects the physical properties of the Au nanoparticles. It also allows for controllable adjustment of the Au nanoparticle size, resulting in a plasma electrode with a wide visible light absorption range, strong light absorption capacity, and excellent photoelectric performance.

The application belongs to the technical field of electrochemical sensing, and particularly discloses an electrochemical aptamer sensor for detecting Cd 2+ based on HCR reaction and application thereof. The electrochemical aptamer sensor comprises a reaction sheet and a detection solution, the detection solution comprises a hairpin probe H1 solution, a hairpin probe H2 solution, an AgNO3 solution and a NaBH4 solution, and the reaction sheet comprises a PET substrate and a working electrode, a graphite counter electrode and a silver / silver chloride reference electrode fixed on the PET substrate by silk screen printing; the working electrode is an Apt modified electrode, which is prepared through gold nanoparticle deposition and Apt solution incubation reaction steps. The electrochemical aptamer sensor captures Cd 2+ by coupling Apt on the electrode surface, triggers HCR reaction amplification signal through Apt which does not capture Cd 2+ , and effectively solves the signal interference problem by detecting the LSV signal of in-situ generated silver nanoclusters, so as to realize high sensitivity, high specificity and rapid detection of Cd 2+ .

The invention discloses an implant piezoelectric nano coating as well as a preparation method and application thereof. The nanometer coating is composed of nanometer flower-shaped barium titanate and gold nanoparticles loaded on the surface of the nanometer flower-shaped barium titanate. According to the invention, gold nanoparticles are deposited on nano barium titanate at a high temperature by using a method of reducing tetrachloroauric acid by using sodium citrate, and nBTOatAu prepared by using the method has obvious osteogenesis and antibacterial properties. The invention provides a high-reactivity, catalytic and non-invasive immediate treatment mode for the peri-implantitis, and has wide application potential in the aspects of post-implant disinfection, peri-implantitis treatment and implant survival rate improvement.

The invention relates to the technical field of gypsum, and discloses a preparation method of mildew-proof formaldehyde-removing gypsum, which comprises the following steps: S1, loading Pd-Cu quantum clusters on a ZIF-8 carrier by adopting a microwave plasma sputtering method under the conditions that the microwave power is 300-600W and the concentration of a precursor solution is 0.05-0.2 mol / L; s2, Au nanoparticles are deposited on the surface of BiOI / BiVO4 through a chemical vapor deposition method, the deposition temperature ranges from 300 DEG C to 400 DEG C, and the carrier gas flow ranges from 50 mL / min to 150 mL / min; and S3, chitosan / PNIPAMJanus particles are prepared through a micro-fluidic interfacial polymerization method, and Ag-Pd bimetallic particles are packaged on the chitosan / PNIPAMJanus particles. The Pd-Cu quantum clusters are loaded by adopting a microwave plasma sputtering method, and the catalytic formaldehyde decomposition efficiency is improved by 175%. Through quantum confinement effect and bimetallic cooperation, the problem that active sites are uncontrollable is solved.

The invention belongs to the technical field of interface thermal resistance measurement, and particularly relates to a method for measuring solid-liquid interface thermal resistance of a single micro-nano particle based on differential Raman. Comprising the following steps: preparing dispersedly distributed micro-nano particles on a quartz substrate, wherein the micro-nano particles have a Raman effect; performing two groups of differential flash Raman-based temperature rise measurement tests on the single micro-nano particle to obtain an average temperature rise ratio of the single micro-nano particle; and establishing an average temperature rise ratio relationship of the micro-nano particles, and solving the solid-liquid interface thermal resistance of the micro-nano particles and the liquid based on the temperature rise ratio obtained by the test. According to the invention, through combination of tests and theoretical formulas, quartz is used as a substrate, silicon nanoparticles are deposited on the substrate, and the interface thermal resistance between silicon particles and liquid is measured; and the blank of measuring the thermal resistance of the solid-liquid interface of the nano-particles by adopting an experimental method is filled.

The application discloses a method for forming an antibacterial layer on the surface of a corneal molding lens by using a gas deposition method, and is characterized by comprising the following steps: using a chemical vapor deposition method to sequentially deposit polydimethylsiloxane (PDMS), silver nanoparticles and nanoscale titanium dioxide (TiO2) on the surface of the corneal molding lens; wherein the temperature of the PDMS deposition process is controlled at 150°C to 200°C, the pressure is 1 to 2 Torr, and the deposition time is 10 to 20 minutes; the temperature of the silver nanoparticle deposition process is controlled at 200°C to 250°C, the pressure is 0.5 to 1.5 Torr, and the deposition time is 15 to 30 minutes; the temperature of the TiO2 nanoparticle deposition process is controlled at 250°C to 300°C, the pressure is 0.8 to 1.5 Torr, and the deposition time is 20 to 40 minutes; the method not only improves the safety and comfort of the corneal molding lens, but also significantly enhances the antibacterial ability of the corneal molding lens, thereby protecting the eye health of the wearer and prolonging the service life of the lens.

A layered semiconductor device comprises at least one particle structure disposed on an underlying layer that comprises a particle material in contact with a contact material selected from: a seed material, a co-deposited dielectric material and / or at least one patterning material. A method for controllably selecting formation of the at least one particle structure on an underlying layer during manufacture of the device comprises depositing at least one layer, including the underlying layer, and exposing its surface to a flux of a particle material such that it comes into contact with the contact material, and coalesces to dispose the at least one particle structure on the underlying layer.

A ceramic coating is deposited onto at least one surface of a chamber component for a process chamber using a cold spray deposition process. The cold spray deposition process propels agglomerates of nanoparticles of a ceramic and deposits the agglomerated nanoparticles of the ceramic onto the at least one surface to form the ceramic coating without causing the particles to undergo a phase change.

Metastable alloys have recently emerged as high-performance catalysts, extending the toolbox of binary alloy materials that can be utilized to mediate electrocatalytic reactions. In particular, nanostructured metastable ordered intermetallic compounds are particularly challenging to synthesize. Here the present invention is directed to a method for synthesizing sub-15 nm metastable ordered intermetallic Pd31Bi12 nanoparticles at room temperature, in a single step, by pulsed electrochemical deposition onto high surface area carbon supports. The resulting Pd31Bi12 nanoparticles displays a 7× enhancement of the mass activity relative to Pt / C and a 4× enhancement relative to Pd / C for the oxygen reduction reaction (ORR). The high performance of Pd31Bi12 nanoparticles is demonstrated to arise from reduced oxygen binding caused by alloying of Pd with Bi. The isolation of Pd-sites from each other facilitate methanol tolerant ORR behavior.

A ceramic coating is deposited onto at least one surface of a chamber component for a process chamber using a cold spray deposition process. The cold spray deposition process propels agglomerates of nanoparticles of a ceramic and deposits the agglomerated nanoparticles of the ceramic onto the at least one surface to form the ceramic coating without causing the particles to undergo a phase change.

The invention provides a LaFeO3 / Bi4Ti3O12 composite photocatalyst as well as a preparation method and application thereof, the composite photocatalyst is of a heterostructure formed by LaFeO3 and Bi4Ti3O12 through interface chemical bonding, and the heterostructure takes a lattice matched with LaFeO3 and Bi4Ti3O12 as a structural basis; the preparation method comprises the following steps: synthesizing LaFeO3 by a hydrothermal method, and depositing LaFeO3 nanoparticles on the surface of Bi4Ti3O12 by the hydrothermal method to prepare the LaFeO3 / Bi4Ti3O12 composite material, the LaFeO3 / Bi4Ti3O12 recoverable photocatalytic material provided by the invention solves the double pain points of insufficient degradation performance and high recovery difficulty of a traditional photocatalyst in organic pollutant treatment, and through material structure design and performance synergy, the photocatalytic material has the advantages of simple preparation process and low cost, and is suitable for industrial production. The integration of'efficient degradation 'and'convenient recovery' is realized.

The invention provides a chiral molecular configuration recognition method, a chiral molecular configuration recognition device and application. The chiral molecular configuration recognition method comprises the following steps: alternately depositing two or more materials with different refractive indexes on a substrate to form a reflector substrate with a periodic multilayer film structure; the method comprises the following steps: depositing metal chiral nanoparticles on a reflector substrate to obtain a chiral molecule detection sensor, and immersing the chiral molecule detection sensor in a to-be-detected chiral molecule solution; the method comprises the following steps: irradiating a chiral molecule detection sensor immersed in a to-be-detected chiral molecule solution with left-handed circularly polarized light LCP and right-handed circularly polarized light RCP to obtain a corresponding circular differential scattering spectrum, and analyzing spectrum peak position offset characteristics to realize judgment on left-handed or right-handed molecules of the to-be-detected chiral molecule solution. The method is high in sensitivity, short in detection time, label-free, washing-free and free of chiral antibodies, and has extremely high market value and application prospect.

Described is a method that utilises a process of producing photocatalytic nanoparticles in situ by flame spray pyrolysis (FSP) and depositing the nanoparticles on the substrate via aerosol deposition to produce a photocatalytic nanoparticle film on the substrate, followed by immersing the photocatalytic nanoparticle film with a polymer solution, or a liquid polymer precursor material, to form a composite layer. The method used results in a composite layer that includes a percolating network of photocatalytic nanoparticles in a polymer matrix, wherein the composite layer has enhanced durability and maintains activity after several cycles of irradiation, which is an improvement over currently known coatings.

The present invention discloses a preparation method and application of an A-B-A nano-trimer array. The method is as follows: an A-A dimer nano-array is prepared by depositing material A on a double-pass nano-pore array template through an angled oblique deposition method; the pore size of the template is regulated by depositing material on the surface of the above-mentioned template through physical vapor deposition, so that material B can be deposited inside or near the gaps between the A-A dimers; finally, material B is deposited inside or around the gaps between the A-A dimers, and the template is removed to obtain an A-B-A trimer nano-array. In the present invention, material A provides plasmon "hot spots", and B is a material for specifically adsorbing target molecules. By precisely constructing, B nanoparticles are deposited between A-A nanoparticles, ensuring that the target molecules are adsorbed at the "hot spots", and solving the problem of uneven distribution of "hot spots" in surface-enhanced Raman scattering. The present invention can be used as a spectral sensing chip for fields such as single-molecule detection and catalytic research.

Some variations provide a method of making a nanofunctionalized metal powder, comprising: providing metal particles containing metals selected from iron, nickel, copper, titanium, magnesium, zinc, silicon, lithium, silver, chromium, manganese, vanadium, bismuth, gallium, or lead; providing nanoparticles selected from zirconium, tantalum, niobium, or titanium; disposing the nanoparticles onto surfaces of the metal particles, in the presence of mixing media, thereby generating nanofunctionalized metal particles; and isolating and recovering the nanofunctionalized metal particles as a nanofunctionalized metal powder. Some variations provide a composition comprising a nanofunctionalized metal powder, the composition comprising metal particles and nanoparticles containing one or more elements selected from the group consisting of zirconium, tantalum, niobium, titanium, and oxides, nitrides, hydrides, carbides, or borides thereof, or combinations of the foregoing.

The present invention may be configured to: apply, while maintaining a separation distance (d) between a substrate and a conductive mask, different electric potentials to each of the substrate and the mask to form an electric field due to an electric potential difference; to make charged nanoparticles pass through a hole of the mask according to the intensity of the electric field to determine the degree to which the charged nanoparticles are focused on the substrate; and control the size and shape of a three-dimensional structure formed by depositing the nanoparticles on the substrate according to the focusing degree.