14 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.

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.

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 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 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.

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.