25 results about "Colloidal nanoparticles" patented technology

The invention relates to the field of nano materials and photonic crystal materials, in particular to nano particles, preparation of the nano particles and application of the nano particles in self-assembly of three-dimensional non-close-packed photonic crystals. The nanoparticles can be self-assembled into a three-dimensional non-close-packed photonic crystal in a concentration range of 1 wt%-60 wt%. According to the invention, the problem that the self-assembly of the three-dimensional non-close-packed colloid photonic crystal is difficult to realize at low concentration at present is solved. By adjusting the mass fraction of the particles in a solution, the three-dimensional non-close-packed colloidal photonic crystal with rich colors can be formed through self-assembly, and the three-dimensional non-close-packed colloidal photonic crystal has wide application prospects in the fields of sensing, display and the like.

The application relates to a structural battery electrolyte with excellent impact resistance and a preparation method and application thereof, wherein the structural battery electrolyte is prepared by compounding main raw materials such as colloidal nanoparticles, shear thickening additives, lithium salts, fluoroacetonitrile (FAN), polymer precursors, initiators and the like through chemical action. The colloidal nanoparticles account for 2 wt%-30 wt% of the total amount of the electrolyte, the shear thickening additives account for 0.2 wt%-2 wt% of the total amount of the electrolyte, and the lithium salt / FAN=1.0-1.5 M. The application adds colloidal nanoparticles and polymer additives into a fluoroacetonitrile (FAN) solution containing lithium salts, realizes the shear thickening performance of the electrolyte by using the "particle cluster" theory, and further endows the battery with the ability of resisting impact and preventing thermal runaway. The shear thickening electrolyte prepared by the application has excellent impact resistance, high conductivity and excellent stability, provides a new idea for the preparation and optimization of the impact-resistant structural electrolyte, and is favorable for improving the safety of lithium metal batteries.

The present disclosure relates to an ink composition incorporating colloidal nanoparticles, such as polystyrene, to enhance viscosity stability and performance under varying environmental conditions, particularly within a temperature range of 0°C to 60°C. The colloidal nanoparticles improve the rheological properties of the ink, ensuring smooth flow, consistent application, and preventing issues such as smudging, clogging, and aggregation. The ink composition comprises a colorant, a dispersing agent, a liquid medium, and additives, providing chemical stability, uniform dispersion, and long-term storage reliability. This composition is suitable for various writing and printing applications under diverse environmental conditions.

Various examples are provided related to nanoparticle synthesis. In one example, a system includes a self-driven fluidics platform including a chemical handling module and a reactor module. A mixer can form an initial mixture and deliver it through the ejector port as part of a segmented flow. The reactor module can control environmental conditions during synthesis of a nanoparticle. A flow reactor includes a channel that allows the segmented flow to move through the flow reactor via the channel and at least one observation window to enable real-time characterization of nanoparticles in individual droplets in the segmented flow through the flow reactor. In another example, a method comprises forming and flowing a segmented flow of droplets into a reactor, measuring a target property of nanoparticles in droplets in the segmented flow, and adjusting formation of droplets added to the segmented flow based upon the measured target property.

Compositions of nanoparticles and surfactants for improved water injectivity are disclosed. More specifically, synergistic combination of nanoparticles, including amine functionalized colloidal nanoparticles and surfactants, provides enhanced water injectivity and increased oil production. Methods of using are also disclosed.

The present disclosure relates to an ink composition incorporating colloidal nanoparticles, such as polystyrene, to enhance viscosity stability and performance under varying environmental conditions, particularly within a temperature range of 0°C to 60°C. The colloidal nanoparticles improve the rheological properties of the ink, ensuring smooth flow, consistent application, and preventing issues such as smudging, clogging, and aggregation. The ink composition comprises a colorant, a dispersing agent, a liquid medium, and additives, providing chemical stability, uniform dispersion, and long-term storage reliability. This composition is suitable for various writing and printing applications under diverse environmental conditions.

A method for leveling the injectivity profile of an injection well involves pumping into the bottom-hole formation zone a blocking agent in the form of an emulsion system containing nanoparticles of silicon dioxide and being comprised of: 5-12 vol % diesel fuel, 2-3 vol % emulsifier, 0.25-1.0 vol % colloidal nanoparticles of silicon dioxide, with the remainder being an aqueous solution of calcium chloride or potassium chloride. The emulsifier is in the form of a composition comprising: 40-42 vol % esters of linoleic or oleic acids and resin acids, 0.7-1 vol % amine oxide, 0.5-1 vol % suspension of lime in diesel fuel or suspension of bentonite in diesel fuel, with the remainder being diesel fuel.

The utility model discloses an antibacterial mildew-proof latex sponge cushion which comprises a sponge body, a plurality of filling channels and filling grooves are arranged on the sponge body, soft silica gel ribs are filled in the filling channels and the filling grooves, frosted edges are arranged on the periphery of the sponge body, antibacterial coatings are arranged on the periphery of the frosted edges, and the antibacterial coatings are arranged on the periphery of the sponge body. The antibacterial coating is one or two of a nano-silver coating, a TiO2 colloid nano-particle coating and a graphene coating. Through the design of spraying the antibacterial coating, the antibacterial performance of the latex sponge mat is enhanced, so that the latex sponge mat is effectively prevented from mildewing, and the service life of the latex sponge mat is prolonged.

comprising: providing a solid substrate; depositing a combination of vaporizable gold atoms and one or more organosulfur ligands on the surface of said substrate by physical vapour deposition (PVD) un

The present invention discloses a water-soluble powdered noble metal nanomaterial, a preparation method thereof and an application thereof, belonging to the technical field of nanomaterials. The water-soluble powdered noble metal nanomaterial is prepared by dispersing a noble metal nanomaterial colloidal solution in an aqueous solution of C 16 TAB with a concentration ≥ 0.2 M or an aqueous solution of C 18 TAB with a concentration ≥ 0.05 M, and then performing vacuum freeze-drying. The advantages of the present invention are as follows: Without adding traditional antifreezing agents, a water-soluble powdered noble metal nanomaterial suitable for the sensing field is prepared, which not only solves the problem of irreversible aggregation faced in the preparation process of nanoparticle powders, but also avoids the influence of traditional antifreezing agents on the sensing system; An integrated all-powdered nitrite / ascorbic acid detection nanocolorimetric analysis kit can be constructed by using the water-soluble powdered noble metal nanomaterial, solving the problems of easy aggregation, difficult preservation and inaccurate results of colloidal nanoparticles.

The invention concerns a composition for forming an electrochromic layer which composition comprises or consists of the following components: Nanoparticles of electrochromic material, a solvent, a surface ligand adsorbed on the surfaces of the nanoparticles and either a photoacid, wherein the photoacid is also adsorbed on the surfaces of the nanoparticles, or decomposition products resulting from decomposition of a photoacid by irradiation, wherein the decomposition products are also adsorbed on the surfaces of the nanoparticles, wherein the decomposition products are organic components, acidic components, protons, cationic components, anionic components and / or radical components, wherein the nanoparticles in the composition are colloidal nanoparticles uniformly distributed within the solvent.

The invention relates to a large-area colloidal nanoparticle array and a preparation method thereof, and the preparation method comprises the following steps: modifying the surface of a substrate with a chemical substance having opposite electrical properties to target adsorption nanoparticles, and preparing a thermoplastic polymer film on the substrate to obtain a thermoplastic polymer film substrate; contacting the thermoplastic polymer film substrate with a PDMS (Polydimethylsiloxane) seal, heating to enable the thermoplastic polymer to enter patterns of the PDMS seal, and forming a thermoplastic polymer array on the substrate; performing plasma etching and dissolution on the thermoplastic polymer array to obtain a surface chemical pattern dot matrix; the substrate with the surface chemical pattern dot matrix is soaked in a nanoparticle solution, nanoparticles are adsorbed, and a nanoparticle array is obtained; the nanoparticle array is transferred using a viscous substance. Compared with the prior art, the method provided by the invention can realize parallel multi-time copy transfer printing, and has the characteristics of simplicity and convenience in operation, low cost, good repeatability and capability of preparing a nano-scale resolution array structure in a large area.

The invention concerns a hybrid physical-chemical method for producing fluorescent colloidal nanoparticles. The disclosed processes represent a simple, environmentally friendly method to produce size-controlled fluorescent colloidal nanoparticles.

The present application relates to the technical field of nanoparticle preparation, in particular to a method for preparing narrow-size-distribution bletilla striata gum nanoparticles under gradient pressure control in supercritical state, which comprises the following steps: preparing a saturated solution of bletilla striata gum and solvent, placing the solution into a reactor, setting temperature, introducing carbon dioxide to a set pressure, starting stirring to fully mix and stabilize the mixture system, adjusting the speed, and releasing the pressure to normal pressure three times under the corresponding pressure, and then obtaining uniform bletilla striata gum nanoparticles, wherein the method has the advantages of less process condition control, high controllability and high operability.

This invention discloses an adjustable energy field material processing device and its multi-field coupled material processing system and method. The device includes at least one energy field unit, an energy field application area, a feeding unit, a workpiece support, and a control system. The energy field unit can generate acoustic, electric, magnetic, optical, airflow, thermal, and plasma fields, or any combination thereof, and can be adjusted by position, angle, distance, or attitude to form a relatively adjustable energy field distribution with the workpiece. After the material enters the energy field application area via spraying, dripping, misting, sprinkling, liquid injection, powder conveying, or manual feeding, it can be picked up, suspended, directionally transported, aggregated, and deposited at specific points under the influence of the energy field. The application areas of multiple energy field units can overlap or be adjacent, forming superimposed, interfering, focused, or enclosed multi-field coupled application areas to improve transport stability and deposition accuracy. The device may further include an electric field component or a perturbed energy field unit to enhance deposition uniformity or redistribute, homogenize, thin, or locally peel off the deposited layer. The system is suitable for open environments or enclosed cavities (atmospheric pressure, low pressure, vacuum, inert atmosphere, special atmosphere, etc.), and can achieve non-contact, high-precision coating, deposition, and surface control of various materials such as droplets, mists, powders, colloids, and nanoparticles. This invention has significant advantages such as open structure, wide applicability to materials, high controllability of deposition, multi-field scalability, and the ability to achieve high-quality deposition on complex surfaces.

The invention discloses a structural battery electrolyte with excellent impact resistance as well as a preparation method and application of the structural battery electrolyte. The structural battery electrolyte is compounded by taking colloidal nanoparticles, a shear thickening additive, a lithium salt, fluoroacetonitrile (FAN), a polymer precursor, an initiator and the like as main raw materials through chemical action. Wherein the colloidal nanoparticles account for 2-30 wt% of the total amount of the electrolyte, the shear thickening additive accounts for 0.2-2 wt% of the total amount of the electrolyte, and the ratio of the lithium salt to the FAN is 1.0-1.5 M. According to the invention, colloidal nanoparticles and a polymer additive are added into a fluoroacetonitrile (FAN) solution containing a lithium salt, and the shear thickening performance of the electrolyte is realized by using a particle cluster theory, so that the battery is endowed with the capability of resisting impact and preventing thermal runaway. The prepared shear thickening electrolyte has excellent anti-impact performance, high conductivity and excellent stability, a new thought is provided for preparation and optimization of an electrolyte with an anti-impact structure, and improvement of the safety of a lithium metal battery is facilitated.

The application relates to the field of nanomaterials and photonic crystal materials, in particular to a kind of nanoparticles and preparation and application of three-dimensional non-close-packed photonic crystal of self-assembly of the nanoparticles, the nanoparticles are colloidal nanoparticles with ionized phenolic hydroxyl on the surface, and the nanoparticles can be self-assembled into three-dimensional non-close-packed photonic crystal in the concentration range of 1 wt%-60 wt%. The application solves the problem that three-dimensional non-close-packed colloidal photonic crystal is difficult to realize self-assembly at low concentration. By adjusting the mass fraction of particles in solution, three-dimensional non-close-packed colloidal photonic crystal with rich colors can be self-assembled, and has wide application prospect in the fields of sensing, display and the like.

A method is disclosed of three-dimensional (3D) free-form printing for coating free-form objects, the method including: arranging a free-form object in a Langmuir-Blodgett (LB) trough filed with a liquid, the LB trough designed based on a shape of the free-form object; arranging an LB film comprising a plurality of colloidal nanospheres on a surface of the liquid within the LB trough; and draining the liquid from the LB trough to form a self-assemble film of the colloidal nanoparticles on a surface of the free-form object.

There is provided a method for preparing a three-dimensional nanostructure using nanoparticles, which includes: a step of surface-treating a patterned pattern substrate with a polymer; a step of coating colloidal nanoparticles on the polymer; a step of removing an unwanted nanoparticle coating layer, leaving behind a nanoparticle coating layer; a step of bonding a carrier substrate having adhevisity to the nanoparticle coating layer; a step of separating the nanoparticle coating layer from the pattern substrate by separating the carrier substrate from the pattern substrate; and a step of forming a nanoparticle layer on a target substrate by contacting the carrier substrate with the target substrate and then removing the carrier substrate by immersing the carrier substrate in a solution.

The present disclosure relates to an ink composition incorporating colloidal nanoparticles, such as polystyrene, to enhance viscosity stability and performance under varying environmental conditions, particularly within a temperature range of 0°C to 60°C. The colloidal nanoparticles improve the rheological properties of the ink, ensuring smooth flow, consistent application, and preventing issues such as smudging, clogging, and aggregation. The ink composition comprises a colorant, a dispersing agent, a liquid medium, and additives, providing chemical stability, uniform dispersion, and long-term storage reliability. This composition is suitable for various writing and printing applications under diverse environmental conditions.

Compositions of nanoparticles and surfactants for enhanced gas lift through increased foaming heights and foam stability are disclosed. More specifically, synergistic combination of nanoparticles, including amine functionalized colloidal nanoparticles and surfactants, provides enhanced gas lift and increased oil production are disclosed. Methods of using are also disclosed.

Compositions of nanoparticles and surfactants for enhanced gas lift through increased foaming heights and foam stability are disclosed. More specifically, synergistic combination of nanoparticles, including amine functionalized colloidal nanoparticles and surfactants, provides enhanced gas lift and increased oil production are disclosed. Methods of using are also disclosed.

The present invention relates to a method and a system for MRI T1 semi-quantitative imaging based on non-immunostimulating polysaccharide cross-linked colloidal nanoparticles satisfying PRR / BCR non-operability and a formulation-normalized potentiation index (F-NEM).

Disclosed herein includes a method for high-throughput, controlled deposition of low-density nanoparticle ensembles onto a substrate. The nanoparticle ensembles may further be functionalized with biological probes for molecular detection, such as molecular plasmonic sensing. Sensing devices containing low-density nanoparticle ensembles functionalized with biological probes and methods of nucleic acid detection are also described.

This invention provides a dual-signal sensing gel skin, its preparation method, and its application, relating to the field of flexible sensing technology. The preparation method of the dual-signal sensing gel skin involves dispersing superparamagnetic iron oxide colloidal nanoparticles in a hydrogel precursor solution to obtain a gel solution, which is then solidified under a magnetic field to obtain the gel skin. Water and glycerol are mixed uniformly, and anhydrous lithium chloride powder is added repeatedly under ultrasonic conditions to obtain a displacement solution. The gel skin is then completely immersed in the displacement solution to obtain the dual-signal sensing gel skin. Superparamagnetic iron oxide colloidal nanoparticles are used as a photonic crystal color-changing material to achieve optical sensing. A glycerol / water binary solvent is used as an environmentally resistant solvent, improving the low-temperature tolerance of the gel skin. Anhydrous lithium chloride is used as a highly conductive unit and a self-regenerating material; the synergistic effect of anhydrous lithium chloride and glycerol in lowering the freezing point results in almost no ice crystal formation within a temperature range of 20°C to -40°C.