Disclosed is nano powder formed of a solid solution including crystalline silver and amorphous copper. The metal nano powder has peaks in X-ray powder diffraction spectrum using a Cu-K radiation of 38.180.2, 44.60.2, 64.500.2, 77.480.2 and 81.580.2 at a diffraction angle of 2. A composition ratio of silver:copper of the metal nano powder is 5.0 to 8.0:2.0 to 5.0 at %.

Disclosed is nano powder formed of a solid solution including crystalline silver and amorphous copper. The metal nano powder has peaks in X-ray powder diffraction spectrum using a Cu-K radiation of 38.180.2, 44.60.2, 64.500.2, 77.480.2 and 81.580.2 at a diffraction angle of 2. A composition ratio of silver:copper of the metal nano powder is 5.0 to 8.0:2.0 to 5.0 at %.

A method for synthesizing a thermally conductive and stretchable elastomer composite comprises mixing liquid metal and soft material (e.g., elastomer) in a centrifugal or industrial shear mixer under conditions such that the liquid metal forms microscale liquid metal droplets that are dispersed in the soft elastomer. Liquid metal-embedded elastomers, or LMEEs, formed in this manner dramatically increase the fracture energy of soft materials up to 50 times over an unfilled polymer. This extreme toughening is achieved by means of (i) increasing energy dissipation, (ii) adaptive crack movement, and (iii) effective elimination of the crack tip. Such properties arise from the deformability and dynamic rearrangement of the LM inclusions during loading, providing a new mechanism to not only prevent crack initiation, but also resist the propagation of existing tears for ultra-tough, highly functional soft materials.

In a method of manufacturing metal powders in a continuous type, metal is heated at a temperature greater than a melting point to form a liquid phase metal, and the liquid phase metal and an emulsion carrier, which is emulsified without reacting with the liquid phase metal, are supplied into a container, and the liquid phase metal and the emulsion carrier are emulsified through Taylor flow to form an emulsion solution. The emulsion solution is discharged from the container, and then, the emulsion solution is cooled at a temperature smaller than the melting point to selectively solidifying the liquid phase metal in the emulsion solution to form the metal powders.

In a method of manufacturing metal powders in a continuous type, metal is heated at a temperature greater than a melting point to form a liquid phase metal, and the liquid phase metal and an emulsion carrier, which is emulsified without reacting with the liquid phase metal, are supplied into a container, and the liquid phase metal and the emulsion carrier are emulsified through Taylor flow to form an emulsion solution. The emulsion solution is discharged from the container, and then, the emulsion solution is cooled at a temperature smaller than the melting point to selectively solidifying the liquid phase metal in the emulsion solution to form the metal powders.

Disclosed herein are a solder alloy composition comprising SnBiIn base solder particles. The SnBiIn base solder particles is characterized by having an average diameter less than 10 m, and the SnBiIn base alloy comprises 12-22% of Sn, 33-43% of Bi and 45-55% by weight. Also disclosed herein is a method for producing the SnBiIn base solder particles. The method mainly includes the steps of, sintering a mixture comprising tin (Sn), bismuth (Bi) and indium (In) at a designated weight ratio to produce a bulk alloy; dissolving the bulk alloy to produce an alloy solution; and subjected the alloy solution to ultrasonication at a first temperature of about 65-85 C. and then cooling at a second temperature of about 0-25 C., thereby produces the present SnBiIn base solder particles.

Disclosed herein are a solder alloy composition comprising SnBiIn base solder particles. The SnBiIn base solder particles is characterized by having an average diameter less than 10 m, and the SnBiIn base alloy comprises 12-22% of Sn, 33-43% of Bi and 45-55% by weight. Also disclosed herein is a method for producing the SnBiIn base solder particles. The method mainly includes the steps of, sintering a mixture comprising tin (Sn), bismuth (Bi) and indium (In) at a designated weight ratio to produce a bulk alloy; dissolving the bulk alloy to produce an alloy solution; and subjected the alloy solution to ultrasonication at a first temperature of about 65-85 C. and then cooling at a second temperature of about 0-25 C., thereby produces the present SnBiIn base solder particles.

A method for coating a body includes providing a plurality of granules in which each granule includes silicon (Si), carbon (C), chromium (Cr) and an iron group metal. The relative quantities of the Si, C and Cr are such that a molten phase will form at a melting temperature of less than 1,300 degrees Celsius when a threshold quantity of the iron group metal is accessible to the Si, C and Cr. A second source of the iron group metal is also provided. A combination of the granules and the second source is formed such that the threshold quantity of the iron group metal will be accessible to the Si, C and Cr. The granules and the second source are heated to the melting temperature to form the molten phase in contact with the body. The heat is then removed to allow the molten phase to solidify.

A method for coating a body includes providing a plurality of granules in which each granule includes silicon (Si), carbon (C), chromium (Cr) and an iron group metal. The relative quantities of the Si, C and Cr are such that a molten phase will form at a melting temperature of less than 1,300 degrees Celsius when a threshold quantity of the iron group metal is accessible to the Si, C and Cr. A second source of the iron group metal is also provided. A combination of the granules and the second source is formed such that the threshold quantity of the iron group metal will be accessible to the Si, C and Cr. The granules and the second source are heated to the melting temperature to form the molten phase in contact with the body. The heat is then removed to allow the molten phase to solidify.

Disclosed are: a method capable of preparing, in large-scaled quantity, nonspherical/asymmetric fine particles in which the physical factors (for example, size, shape, structure, etc.) of a fine wire (for example, glass-coated metal wires) are controlled, by merging a convergence of nano technology (NT) and laser machining technology; and a use thereof applicable to various fields including bioassay and security.