Patent ID: 8557506

Claim:
A method of fabricating a bimetallic microstructure, wherein the method includes the following steps: (a) providing a substrate that has at least one conductive surface; (b) applying a photosensitive resin layer onto the at least one conductive surface of the substrate; (c) irradiating the photosensitive resin layer through a mask defining a contour of a predefined microstructure; (d) dissolving non-irradiated zones of the photosensitive resin layer to reveal, in places, the at least one conductive surface of the substrate; (e) rendering irradiated zones of the photosensitive resin layer electrically conductive so as to form with the at least one conductive surface a substrate top surface of a mould, wherein the entire substrate top surface is electrically conductive; (f) galvanically and uniformly depositing a first metal layer of a first metal on the at least one conductive surface of the substrate and on electrically conductive surfaces of the photosensitive resin layer; (g) galvanically and uniformly depositing a second metal layer of a second metal on the first metal layer to form an electrodeposited block that approximately reaches a level of a top surface of the photosensitive resin layer; (h) flattening the photosensitive resin layer and deposited first metal and second metal to bring the photosensitive resin layer and the electrodeposited block to the same level; (i) separating, by delamination, the photosensitive resin layer and the electrodeposited block from the substrate; and (j) removing the photosensitive resin layer from the delaminated structure to release the bimetallic microstructure thereby formed.