Patent ID: 8470154

Claim:
A fabrication method of a metal microstructure including at least a first element made of a first metal material inserted into a second element made of a second metal material, wherein the method includes the following steps: a) providing a substrate that has a conductive strike surface; b) forming a first resin mould by UV photolithography, with apertures in the first resin mould revealing the conductive strike surface of the substrate; c) electroforming the first element by galvanic deposition of a first metal material in the apertures of the first resin mould, d) removing the first mould around the first element to expose the conductive strike surface of the substrate; e) forming a new resin mould by UV photolithography, with apertures in the new resin mould revealing the first element, and the conductive strike surface of the substrate; f) electroforming the second element by galvanic deposition of a second metal material in the apertures of the new resin mould to form said metal microstructure; g) separating said metal microstructure from the substrate and from said new mould.