Patent ID: 8475922
Filing Date: 2013-07-02
Classification: B32B,Y10T

Abstract:
1. A nanoparticle composite material, comprising: nanoparticle aggregates in a shape of a plate, a flat ellipsoid, a rod or a spheroid, the shape of a plate having an average thickness of 20 nm or more and 2 μm or less and having an average aspect ratio of width to thickness of 5 or more, the shape of a flat ellipsoid having an average height in a direction perpendicular to a diameter of 20 nm or more and 2 μm or less and having an average aspect ratio of diameter to height of 5 or more, the shape of a rod having an average length of 20 nm or more and 2 μm or less and having an average aspect ratio of length to diameter of a bottom face of 5 or more, the shape of a spheroid having an average minor-axis length of 20 nm or more and 2 μm or less and having an average aspect ratio of major-axis length to minor-axis length of 5 or more, the nanoparticle aggregates comprising metal nanoparticles having an average diameter of 1 nm or more and 20 nm or less and containing at least one magnetic metal selected from the group consisting of Fe, Co and Ni; and a binder existing between the nanoparticle aggregates.