Patent ID: 7188411

Claim:
A process for forming at least one portion of a compound material formed from elements of an initial material and of a metal within an electronic circuit, comprising the following steps: (a) formation of a cavity that includes at least one opening onto an access surface and has an internal wall having at least one region of initial material, wherein the cavity comprises a cylindrical or parallelepipedal first volume open to the access surface, and wherein the cavity furthermore comprises a second volume into which the first volume runs on an opposite side from the access surface, the second volume extending laterally away from the first volume in a direction parallel to the access surface; (b) deposition of the metal close to said region of initial material; (c) heating of the circuit so as to form a portion of compound material in said region of initial material; and (d) removal of at least one portion of the metal that has not formed some of the compound material from the cavity via said opening.