Patent ID: 7892975

Claim:
A method for selectively forming an electric conductor, the method comprising: disposing a processing target and a metal compound in an atmosphere including a supercritical fluid, the processing target having formed thereon at least one recess for providing an electric conductor, the metal compound including a metal serving as a main component of the electric conductor, and dissolving at least part of the metal compound in the supercritical fluid; selectively introducing the metal compound dissolved in the supercritical fluid into the recess in contact with a surface of the processing target, and coagulating in the recess the metal compound introduced into the recess to precipitate the metal from the metal compound; and coagulating the metal precipitated in the recess, thereby providing the electric conductor in the recess; wherein the metal compound of a solid phase is disposed in the atmosphere and the metal compound of the solid phase is fused and changed to a liquid phase to dissolve part of the metal compound in the liquid phase in the supercritical fluid; wherein the liquid phase of the metal compound and the supercritical fluid coexist in the atmosphere in a state in which they are separated from each other, with part of the metal compound of the liquid phase dissolved in the supercritical fluid; wherein a density of the supercritical fluid is made non-uniform and a cyclic pulsing of the density of the supercritical fluid is generated, thereby promoting precipitation of the metal from the metal compound; and wherein at least one of a temperature and a pressure of the atmosphere is periodically changed at predetermined intervals and made non-uniform, thereby generating the cyclic pulsing of the density of the supercritical fluid.