Patent ID: 8178416
Filing Date: 2012-05-15
Classification: B82Y,H01L,Y10T

Abstract:
1. A method of fabricating an electrically conductive mechanical interconnection element, said method comprising: i) placing in an electrolytic cell, an electrolytic solution of a compound that is a precursor of a metallic material; ii) immersing in said solution a conductive substrate having at least one face coated in a porous membrane presenting a substantially regular array of rectilinear through pores; iii) providing an electrode facing said or each porous membrane, but spaced apart therefrom; iv) connecting said substrate to a negative terminal of an electricity generator so as to constitute a cathode, and connecting said electrode to a positive terminal of said generator so as to constitute an anode, in order to perform electrolytic deposition of said metallic material on the surface of the substrate through the pores of said membrane; v) dissolving said porous membrane so as to release a structure comprising a plurality of wires of sub-micrometric diameter made of said metallic material and projecting from the surface of said substrate; said method further comprising: vi) controlled partial dissolution of said wires to reduce the diameter thereof so as to increase the force of adhesion that acts between two said structures as a result of said wires interpenetrating and tangling together when the structures are pressed one against the other.