The present invention can provide light-colored magnetic particles having a zirconium oxide coating layer formed on a magnetic core, and having a silver coating layer formed on the zirconium oxide coating layer, and a part of the surface of the zirconium oxide coating layer is exposed to the outside, but chemical resistance is excellent, and thus the magnetic particles hardly cause a change of magnetic characteristics so as to be suitable for security elements.

An inkjet ink having nickel particles dispersed in water, in which stable dispersion of the nickel particles and stable inkjet ejection are implemented. The inkjet ink includes nickel particles, a dispersant, a nonionic surfactant, and a mixed solvent of water and a water-soluble organic solvent. The inkjet ink contains the dispersant in an amount of 10 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the nickel particles, and contains the water-soluble organic solvent in an amount of 11 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the water.

An nitrogen solid solution titanium sintered compact includes a matrix made of a titanium component having an -phase, nitrogen atoms dissolved as a solute of solid solution in a crystal lattice of the titanium component, and metal atoms dissolved as a solute of solid solution in the crystal lattice of the titanium component.

This disclosure relates to a fine silver particle dispersion including: (1) 65 to 95.4% by weight of fine silver particles which have an average primary particle diameter of 10 to 190 nm and which comprise 25% by number or less of silver particles having a primary particle diameter of 100 nm or larger, (2) 4.5 to 34.5% by weight of a solvent, and (3) 0.1 to 1.0% by weight of ethyl cellulose having a weight average molecular weight of 10,000 to 120,000.

Embodiments of the present invention relate to methods for preparing high optical density solutions of nanoparticle, such as nanoplates, silver nanoplates or silver platelet nanoparticles, and to the solutions and substrates prepared by the methods. The process can include the addition of stabilizing agents (e.g., chemical or biological agents bound or otherwise linked to the nanoparticle surface) that stabilize the nanoparticle before, during, and/or after concentration, thereby allowing for the production of a stable, high optical density solution of silver nanoplates. The process can also include increasing the concentration of silver nanoplates within the solution, and thus increasing the solution optical density.

The present invention provides a film-shaped firing composition with excellent printability, a method of producing a film-shaped firing material obtained by using the firing material composition, and a method of producing a film-shaped firing material with a support sheet. A paste-like firing material composition is provided, including sinterable metal particles (10), a binder component (20), and a solvent having a relative evaporation rate of 4.0 or less with respect to butyl acetate, in which a content of the solvent is in a range of 12% to 50% by mass with respect to a total mass of the firing material composition.

The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) RCOOR, in which R stands for C.sub.10-C.sub.29 groups and R for H or C.sub.1-C.sub.8 groups.

The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) RCOOR, in which R stands for C.sub.10-C.sub.29 groups and R for H or C.sub.1-C.sub.8 groups.

The present invention relates to a method for preparing highly active silica magnetic nanoparticles, highly active silica magnetic nanoparticles prepared by the method, and a method of isolating nucleic acid using the highly active silica magnetic nanoparticles. The highly active silica magnetic nanoparticles prepared according to the present invention contain magnetic nanoparticles completely coated with silica, can be used as a reagent for isolating biomaterials, particularly, nucleic acids, and can isolate and purify nucleic acid in a high yield.

The present invention relates to a method for preparing highly active silica magnetic nanoparticles, highly active silica magnetic nanoparticles prepared by the method, and a method of isolating nucleic acid using the highly active silica magnetic nanoparticles. The highly active silica magnetic nanoparticles prepared according to the present invention contain magnetic nanoparticles completely coated with silica, can be used as a reagent for isolating biomaterials, particularly, nucleic acids, and can isolate and purify nucleic acid in a high yield.