considered the highly reactive metals and even an electrolyte may be suspended in a solvent for accurate and repeatable printing as used herein u201c highly reactive metals u201d or u201c rieke highly reactive metals u201d refers to zerovalent having a valence of zero metal atoms in a finely divided powder form rieke highly reactive metals are prepared by the rieke method the high reactivity of the metals may be in relation to reactivity in organic reactions such as oxidative addition reactions examples of highly reactive metals include highly reactive forms of zinc copper and nickel further examples of highly reactive metals and methods of preparation are found in u s pat nos 5 964 919 5 852 200 5 756 653 5 581 004 5 507 973 5 498 734 5 490 952 5 490 951 5 463 018 5 436 315 5 384 078 5 358 546 5 330 687 5 231 205 5 211 889 and 5 211 886 whose disclosures are herein incorporated in there entirety as used herein u201c electrode u201d refers to a conductor used to make contact with a nonmetallic part of a circuit such as an electrolyte examples of electrodes are anodes and cathodes as used herein u201c anode u201d refers to the electrode where oxidation takes place and in which electrons may be lost an anode may be a negative electrode for example as used herein u201c cathode u201d refers to the electrode where reduction takes place in which electrons are accepted a cathode may be a positive electrode for example as.