20 results about "Nanostructured metal" patented technology

Disclosed herein are assays, methods, and devices for detecting a target ion via ionophore-based ion-selective sensing using Surface Enhanced Raman Spectroscopy (SERS). For example, disclosed herein are assays for detection of a target ion via SERS, the assays comprising: an ionophore, a nanostructured metal, an ion exchanger, and an indicator, wherein the ionophore comprises a binding portion configured to bind with the target ion, wherein the nanostructured metal is configured to enhance a Raman signal of at least a portion of the indicator, wherein the Raman signal changes when the target ion is bound to the ionophore. Also disclosed herein are methods, for example, comprising contacting any of the assays described herein with a liquid sample; subsequently collecting a surface enhanced Raman signal from the liquid sample and the assay; and processing the surface enhanced Raman signal to determine a property of the liquid sample.

This invention provides a one-dimensional silver nanostructure / metal hydroxide composite material, its preparation method, and its application. The preparation method includes: adding a one-dimensional silver nanostructure, a metal salt, and an additive to a solvent and stirring to disperse them evenly; adding an acidic or alkaline reagent under stirring conditions to adjust the pH of the solution, causing the metal ions in the solution to convert into metal hydroxide precipitates, obtaining a one-dimensional silver nanostructure-metal hydroxide suspension; then performing solid-liquid separation, washing and drying the obtained solid product to obtain a one-dimensional silver nanostructure / metal hydroxide composite powder; wherein the metal hydroxide is aluminum hydroxide, zinc hydroxide, magnesium hydroxide, iron hydroxide, manganese hydroxide, copper hydroxide, nickel hydroxide, or cobalt hydroxide, and the one-dimensional silver nanostructure is silver nanowire or silver nanoribbon. The resulting composite material uses metal hydroxide as a carrier and separator, inhibiting the drying and agglomeration of silver nanowires from the source, exhibiting high conductivity and good redispersibility, thus improving conductivity.

A liquid impregnated composite comprising a thermally conductive micro-or nano-structured scaffold impregnated with an effective amount of a thermal bridge liquid wherein the scaffold mainly comprises a first metal, has a micro-or nano-structure, is capable of holding the thermal bridge liquid internally, and has a self-supporting interconnected network structure. The composite material allows for easy pre-encapsulation, provides high thermal performance, reprocessability, and reliability, and can be used for thermal interface cooling in data centers, GPU / CPU systems, solid state lasers, thermoelectric modules, LEDs, and the like.

The application discloses a kind of multilayer nanostructure metal hydride and preparation method thereof, the preparation method includes that transition metal ion salt and carbon material are added to polar solvent mixture, heating stirring and obtain solid powder, hydrogen hot reduction reaction is carried out to solid powder and obtains functionalized carbon material;Metal hydride raw material, functionalized carbon material are added to organic solvent, ultrasonic, and mixed and obtain mixed solution, the metal hydride raw material is alkyl metal Mg compound or alkyl metal Li compound and mixture of borane compound;Under hydrogen atmosphere, the mixed solution is carried out solvothermal reaction, then centrifugation, washing, filtration, drying and obtain multilayer nanostructure metal hydride.The preparation method prepared multilayer nanostructure metal hydride has higher hydrogen absorption and hydrogen storage capacity.

Methods of treating metal nanocrystals are provided. In embodiments, such a method comprises exposing metal nanocrystals comprising a metal and characterized by at least one twinning boundary therein, to a plating solution comprising a reducing agent and coating metal cations comprising a different metal, under conditions to form a coating of the different metal on surfaces of the metal nanocrystals via electroless deposition by chemical reduction of the coating metal cations, thereby providing coated metal nanocrystals. Methods of forming bulk nanostructured metal alloys from the coated metal nanocrystals are also provided.

The present application belongs to the technical field of energy storage materials, and particularly relates to a carbon-containing metal oxide negative electrode material, a preparation method thereof and a lithium ion capacitor. Compared with the prior art, the present application innovatively uses a nanostructured metal organic framework material as a precursor, and forms a nanostructured metal oxide material as a lithium ion capacitor negative electrode material through heat treatment. The confinement effect between the metal sites and the organic ligands connected by strong coordination bonds can effectively slow down the volume expansion effect of the material, and the potential catalytic effect of the metal elements can promote the graphitization degree of the surrounding carbon, thereby further enhancing the electronic conductivity and surface roughness of the negative electrode, and improving the energy density of the lithium ion capacitor.

The present disclosure relates to direct immobilization of antibodies by physisorption onto plain and nanostructured metal-containing films. An exemplary method for preparing a sensor includes contacting an antibody with a surface of a film comprising an ionic compound and a metal selected from gold, silver, platinum, copper, and any combination thereof, and then contacting a blocking agent with the surface of the film to form the sensor.

A configuration of nanoscale metal or metal oxide projections on the surface of a metal substrate is provided. The configuration, because of their nanoscale geometric characteristics, create non-uniform distributions of electrical surface charge, which can rapidly transfer into nearby microbes to reduce or eliminate their pathogenicity. The charge transfer disrupts the microbe outer membrane and inactivates pathogenic processes. One embodiment of a nano surface architecture is provided that is suitable for inactivating viruses or killing bacteria via enhanced charge transfer. A range of nanoprojection spacings, sizes, and shapes are provided. A high shear deformation process to create high-angle grain boundaries and specific grain sizes in metal or alloy substrates suited for nucleating and growing nanoprojections that possess the characteristics needed to deactivate microbes is also provided. Also provided are embodiments of high shear deformation to make the suitable substrates and thermal oxidation processes to cultivate nanoprojections.

The present invention concerns an ultra-sensitive optical sensor, in a single configuration or integrable in a system of variable geometry sensors, which can be coupled to a light source and a detection device as well as to a reference chip, which is able to detect the presence and / or concentration of an analyte, using a suitable receptor layer (synthetic or natural), in a real matrix through the induction of hybrid plasmonic resonances caused by the interaction between the incident visible radiation and a nanostructured metal surface, not obtained by lithographic techniques, such as pollen-based techniques. The present invention further refers to a method for the realization of the sensor and to the uses in the application fields of analytical interest.

The invention discloses a dual-scale heterogeneous nickel-based alloy with crystal grains and a gamma'phase strengthening phase and a preparation method of the dual-scale heterogeneous nickel-based alloy, and relates to the technical field of nano-structure metal materials. According to the preparation method, the dual-scale heterogeneous nickel-based alloy with crystal grains and gamma'phase strengthening phases is prepared by adopting a solution treatment-cold rolling-annealing process, the nickel-based alloy structure contains two heterogeneous structures with different crystal grain sizes, and meanwhile, two regions contain two gamma 'precipitated phases with different sizes. The treated nickel-based alloy mainly comprises a recrystallization area and a nanocrystalline area, the yield strength of the treated nickel-based alloy reaches 1406 MPa, the yield strength of the treated nickel-based alloy is improved by 75% compared with that of an untreated nickel-based alloy, the uniform ductility of the treated nickel-based alloy is 15.4%, and the high strength-plasticity ratio is achieved. The preparation method provided by the invention is simple and convenient, has low requirements on equipment, and is convenient for large-scale industrial production and application.

A process produces a coated active anode material, wherein a mixed anode material and a pyrogenically produced and nanostructured metal oxide of alumina, titania or a mixture thereof are subjected to dry mixing in a mixing unit. A coated mixed anode material obtainable by this process finds application in lithium-ion batteries, electric and / or electronic devices.

The application discloses a copper foil and a preparation method and application thereof, and belongs to the technical field of nano-structured metal material engineering. The copper foil comprises a nano-twin crystal structure inside the crystal grain; the nano-twin crystal structure comprises parallel twin crystal sheet layers and / or intersecting twin crystal sheet layers. The copper foil has stable mechanical properties and physical properties at room temperature. The stable performance means that the attenuation ratio of the mechanical properties is less than 10% after the green foil is treated by baking (150 DEG C, 10 min) or stored for 7 days at room temperature. The method is an improvement of a direct current electrolytic deposition copper foil method, the deposition process of copper is affected by changing the fluctuation amplitude of the output current, and finally, a high-density nano-twin crystal electrolytic copper foil with fine unit cells, uniform and small structures and intersecting twin crystal sheet layers in the crystal is obtained.

Disclosed herein are assays, methods, and devices for detecting a target ion via ionophore-based ion-selective sensing using Surface Enhanced Raman Spectroscopy (SERS). For example, disclosed herein are assays for detection of a target ion via SERS, the assays comprising: an ionophore, a nanostructured metal, an ion exchanger, and an indicator, wherein the ionophore comprises a binding portion configured to bind with the target ion, wherein the nanostructured metal is configured to enhance a Raman signal of at least a portion of the indicator, wherein the Raman signal changes when the target ion is bound to the ionophore. Also disclosed herein are methods, for example, comprising contacting any of the assays described herein with a liquid sample; subsequently collecting a surface enhanced Raman signal from the liquid sample and the assay; and processing the surface enhanced Raman signal to determine a property of the liquid sample.

The invention discloses a method for calculating the fatigue behavior of gradient structure metal based on a deformation mechanism and microstructure composition. According to the method, based on a deformation mechanism and microstructure composition, a gradient grain size distribution nanostructure metal low-cycle fatigue hysteresis curve can be simulated, and the fatigue life can be predicted. Under an elastic-plastic theoretical framework, microstructure characteristics such as grain size, dislocation density and microcracks in metal are comprehensively considered, and elastic-plastic constitutive and toughness characteristics during uniaxial tension / compression are accurately simulated through numerical calculation. When a low-cycle fatigue hysteretic curve is simulated, cyclic strain loading conditions are set on the basis of the elastic-plastic constitutive model, a curve is generated through numerical calculation, the curve shape, area change and cyclic hardening / softening behaviors can be accurately captured, and a fatigue life prediction model is established according to the curve shape, area change and cyclic hardening / softening behaviors. The model can accurately predict the fatigue life according to a microstructure and loading conditions by combining microscopic and macroscopic relations. The method provides a new way for low-cycle fatigue simulation and life prediction, and provides theoretical guidance for prolonging the life of the gradient material.

The invention discloses preparation and application of a metal-carbon-based composite material with a multi-layer core-shell nanostructure. According to the invention, a carbon material with a unique hollow structure is used as a carbon carrier, and the transition metal doped molybdenum sulfide carbon-based catalyst is designed and synthesized by using a multi-stage porous structure and rich reaction sites of the carbon material; a metal-carbon multi-layer core-shell nanotube structure constructed through an adsorption-anchoring strategy can realize uniform loading of the modified ultrathin molybdenum sulfide nanosheet (the thickness is less than 5 nm); meanwhile, due to the rich defect structure, more additional active edge sites can be brought. The obtained composite material combines the synergistic effect of metal and a carbon substrate, optimizes a charge transfer path, is suitable for high-performance electrolytic water hydrogen evolution reaction (HER), can provide a new research thought for developing a novel efficient non-noble metal-carbon-based electrocatalyst, and shows potential application value in energy conversion and related fields.

The present invention belongs to the technical field of loaded catalyst preparation, and discloses a method for loading a controllable nanostructured metal catalyst by flow-through electroplating on a microchannel electrode, comprising the following steps: first, pre-treating the microchannel electrode to remove the substrate oxide film and oil stains; then, flow-through alkali etching to increase the active sites and surface area in the microchannel; second, loading the metal catalyst in the microchannel, using a step-by-step pressure increase and two-way circulation technology to control the catalyst loading size and distribution; and finally, post-processing the electroplating solution. The catalyst loaded inside the prepared microchannel electrode is nanostructured and has the advantages of uniform distribution, and controllable loading amount and particle size. The present invention is simple to operate, has an easily controllable loading rate, and a stable coating, and has broad application prospects in various fields such as wastewater treatment, carbon dioxide recovery, and nitrate removal.

A coated cathode active material for a sodium ion secondary battery, the coated cathode active material comprising particles of a cathode active material for a sodium ion secondary battery encapsulated within a coating layer of nanostructured zirconium pyrophosphate particles produced by flame spray pyrolysis.

The present invention provides a heating-type light source (10) capable of emitting a focused light beam using plasmon resonance. The heating-type light source (10) is provided with: a radiation unit (12) that emits, by heating, a light beam that has been enhanced at a specific wavelength that is longer than the visible-light band on the basis of surface plasmon resonance; and a substrate (11) that supports the radiation unit (12). The radiation unit (12) has a metal structure layer (13), a base metal layer (15) that is in contact with the substrate (11), and a dielectric layer (14) that is disposed between the metal structure layer (13) and the base metal layer (15). The metal structure layer (13) is formed by arranging a plurality of nanostructures (16) in which surface plasmons are present, the plurality of nanostructures (16) including two or more types of nanostructures (16) different from each other in at least one of shape and size. The metal structure layer (13) causes the light beam to converge at an arbitrary position by controlling a phase of the light beam with the plurality of nanostructures (16).

The present application relates to the technical field of metal material impact behavior simulation, and particularly relates to a method for calculating strain rate effect of mechanical properties of gradient nanostructured metal. The method comprises the following steps: setting initial conditions of coarse-grained metal and gradient nanostructured metal; obtaining material parameters, structure information and experimental results of the coarse-grained metal and the gradient nanostructured metal; adjusting the grain of the two kinds of metal, obtaining determined parameters after adjustment, and then obtaining simulated stress-strain curves; optimizing and adjusting the determined parameters; predicting uniaxial tensile / compressive performance of the gradient nanostructured metal under different grain size gradient structures; and predicting the influence of different strain rates on the tensile / compressive elastic-plastic constitutive behavior of the material. The present application takes the elastic-plastic theory as the core and combines the material microstructure characteristics, effectively improves the accuracy of the strain rate effect simulation prediction, and successfully solves the technical pain point of large prediction deviation of the existing method.

The invention discloses a method for calculating elastic-plastic constitutive behaviors and toughness characteristics of gradient grain size distribution nano-structure metal based on a deformation mechanism and microstructure composition, which is based on an elastic-plastic theoretical framework, considers the deformation mechanism and the microstructure composition, realizes numerical calculation through MATLAB (Matrix Laboratory), and obtains the elastic-plastic constitutive behaviors and toughness characteristics of the gradient grain size distribution nano-structure metal. The uniaxial tension / compression elastic-plastic constitutive behavior and the toughness characteristic of the gradient grain size distribution nano-structure metal are simulated and predicted. According to the method, microstructure characteristics such as the grain size in the metal, dislocation density evolution, microcrack generation and evolution and the like are considered, and the uniaxial tension / compression elastic-plastic constitutive behavior and the toughness characteristic of the nano-structure metal material with the grain size in gradient distribution are simulated and predicted. In an experiment for preparing a gradient grain size distribution nano-structure metal material, the method provides a theoretical basis for the tensile / compression performance change of the gradient structure metal, and can provide theoretical guidance for how to improve the toughness performance of the gradient material.