The disclosure relates to materials and methods for additive manufacturing. For example, the material can comprise nanoparticles deposited on nanostructures to form the decorated nanostructure material; nanoparticles deposited on nanostructures, wherein the nanoparticles are bound together to form a three-dimensional network of the material; or nanoparticles deposited on nanostructures; and additive particles bound to the nanoparticles to form a three-dimensional network of the material. There are also provided methods for additive manufacturing comprising subjecting a material comprising nanoparticles deposited on nanostructures, and additive particles bound to the nanoparticles, to an energy treatment in conditions to form a green, and subjecting the green to a thermal treatment to provide an additive manufacturing item.

An aluminum based composite material includes an aluminum parent phase and dispersions dispersed in the aluminum parent phase and formed such that a portion or all of additives react with aluminum in the aluminum parent phase, an average particle diameter of the dispersions is 20 nm or less, a content of the dispersions is 0.25% by mass or more and 0.72% by mass or less in terms of carbon amount, and an interval between the dispersions adjacent to each other is 210 nm or less.

An organic light emitting diode (OLED) device and a method for manufacturing a liquid material to be sprayed for the OLED device are provided. The OLED device includes a substrate, and a pixel defining layer, an anode layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode layer are laminated on the substrate. The cathode layer is a carbon nanotube-polymer layered composite transparent electrode.

In some embodiments, a method is provided that includes (1) providing aluminum; (2) providing carbon nanotube material; (3) combining the aluminum and carbon nanotube material to form a current-carrying, aluminum-carbon-nanotube component of an electrical switch device; and (4) assembling the electrical switch device using the aluminum-carbon-nanotube component. The aluminum-carbon-nanotube component is formed so as to have at least one of lower electrical resistivity and greater thermal conductivity than a component formed of aluminum without carbon nanotube material. Numerous other embodiments are provided.

This application relates to a method of manufacturing a cooling pipe for a powertrain of an electric vehicle. The method may include preparing a powdered composite material by ball-milling aluminum alloy particles and carbon nanotube particles. The method may also include preparing a multilayer billet containing the powdered composite material and comprising a core layer and two or more shell layers surrounding the core layer. The method may further include extruding the multilayer billet to produce a pipe-shaped extrusion. The core layer is made of the powdered composite material or an aluminum alloy, the outermost shell layer of the two or more shell layers is made of an aluminum alloy, and the remaining shell layers are made of an aluminum alloy. This application also relates to a cooling pipe manufactured by the method, an electric vehicle motor and an electric vehicle battery pack casing including the cooling pipe.

An electrically conductive, flexible, strain resilient product is produced by mixing metal coated carbon nanotube networks with a liquid polymeric resin to produce a liquid mixture, and the mixture is cured to produce the product. The networks may include welded junctions between nanotubes formed by depositing and melting metal nanoparticles on the nanotubes to form the metal coating. After the mixing step the liquid mixture may be deposited on a flexible substrate in the form of an electrical circuit. The mixing step may further include mixing the composite with a volatile solvent to produce a selected viscosity. Then, a three-dimensional printer may be used to print the product, such as an electrical circuit, on a substrate. The product is cured in an atmosphere that absorbs the solvent. The conductivity of the mixture may be adjusted by adjusting the weight percentage of the metal coated carbon nanotube networks from 50% to 90%, but a preferred range is between 75% and 85%.

A metal-nanostructure composite includes a nanostructure-metal matrix composite. The nanostructure-metal matrix composite includes a host metal and nanofiller dispersed in the grains of the metal. The nanofillers can include both one-dimensional nanostructures (e.g., nano-tubes, nano-rods, nano-pillars, etc.) and two-dimensional nanostructures (e.g., graphene, nano-foam, nano-mesh, etc.) to improve the radiation resistance and mechanical properties of the host metal. A method of manufacturing the metal-nanostructure composite includes obtaining carbon nanotubes (CNTs) and encapsulating the CNTs with metal particles. The method also includes consolidating the encapsulated CNTs and forming (e.g., via extrusion) the consolidated metal/CNTs to produce the metal-nanostructure composite.

An aluminum-based composite material includes a plurality of coarse crystalline grains (3) of pure aluminum, and a plurality of fine crystalline grains (4) each having an aluminum matrix (1), and a dispersion material (2) dispersed inside the aluminum matrix and formed by reacting a portion or all of an additive with aluminum in the aluminum matrix. The fine crystalline grains exist among the coarse crystalline grains, and the fine crystalline grains have crystalline grain diameters smaller than crystalline grain diameters of the coarse crystalline grains.

A gas sensor and a method of fabricating the same are provided. The gas sensor includes a substrate, carbon nanotubes (CNTs) adsorbed onto the substrate, platinum nanoparticles (NPs) decorated to surfaces of the CNTs, and an electrode formed on the substrate onto which the CNTs with the platinum NPs decorated thereto are adsorbed. When the platinum NPs and CNTs are used as a sensing material, the gas sensor can be useful in sensing gases with high sensitivity even when present at a low concentration of at least 2 ppm and stably sensing noxious gases such as C.sub.6H.sub.6, C.sub.7H.sub.8, C.sub.3H.sub.6O, CO, NO, and NH.sub.3 as well as NO.sub.2, and can have particularly excellent selectivity and response characteristics with respect to NO.sub.2 gas.

A fastener configured for an electrical power distribution application is disclosed. The fastener includes an aluminum (Al) metal matrix composite (MMC) comprising nanoscale carbon particles in a concentration of 0.01 to 2 percent by weight (wt %). The nanoscale carbon particles are evenly distributed throughout an entirety of the MMC. The fastener is useful for connecting conductors such as busbars, wires, or cables. Also disclosed is a method for fabricating the aluminum MMC fastener comprising a solid-state deformation process.