Method and system for the localized deposit of metal on a surface

A method for the localized deposition of a metal layer comprising:

• (a) introducing
• a first gaseous reactant, the first gaseous reactant comprising a metal-containing precursor, and
• a second gaseous reactant
• to a surface of a substrate, wherein the first and second gaseous reactants are introduced to the surface of the substrate through one or more gas outlets;
• and
• (b) directing a laser against a location on the substrate surface that is adjacent to the one or more gas outlets, thereby heating a zone of the surface to a temperature at which the first and second gaseous reactants react to produce a metal and an acidic byproduct, such that a metal layer is deposited on the heated zone of the substrate surface;
• (c) moving the one or more gas outlets and the laser in a controlled manner so as to deposit the metal layer in a desired pattern on the substrate surface;
• and
• repeating (a), (b) and (c) to perform three-dimensional printing of a plurality of layers of the metal onto the substrate, in which the surface onto which at least one subsequent metal layer is deposited on a prior metal layer deposited by (a) and (b), each of the plurality of the layers comprising a corresponding pattern and the one or more gas outlets and the laser follow the pattern to deposit the corresponding layer, wherein the metal deposited on the surface of the substrate such that the metal layer can be separated from the substrate.