The invention discloses a nano chain composed by
metallic nickel particles connected by
copper oxide films and a preparation method thereof. The nano chain is formed by the alternative connection of the
metallic nickel particles and the
copper oxide fims, wherein the
diameter of each
metallic nickel particle is 6 nm to 130 nm, the film length of each
copper oxide film is 15 nm to 50 nm, the film width of each
copper oxide is 30 nm to 50 nm and the film thickness of each
copper oxide is 1 nm to 10 nm. The preparation method of the nano chain composed by the metallic
nickel particles connected by the
copper oxide films comprises the following steps: firstly, an aluminum sheet is processed through an
anodic oxidation method so that a through-hole
alumina template is obtained; a
gold film is plated on one side of the through-hole
alumina template in an evaporated mode and then the through-hole
alumina template is used as a negative pole and placed in copper
electrolyte and
nickel electrolyte respectively for multiple alternative electrolytic depositions, so that the alumina template is obtained, wherein the through holes of the through-hole alumina template are placed with the copper cylinders and the
nickel cylinders, the copper cylinders and the nickel cylinders are connected alternatively and one side of the alumina template is plated with the
gold film; then the alumina template is soaked in aqueous alkali, so that a nano chain array which is formed by the alternative connection of copper oxide films and nickel particles is obtained; and finally the nano chain array is placed in ethylalcohol for
ultrasonic dispersion, so that target production is obtained. The nano chain composed by the metallic nickel particles connected by the copper oxides and the preparation method thereof can be widely applied to magnetic recording, micro-mechanical sensors and biological
medicine filed, such as the deliver of
medicine,
hyperthermia and
magnetic separation.