A method of making a thin-film multi-layer micro-wire structure includes providing a substrate and a layer on the substrate with one or more micro-channels having a width less than or equal to 20 microns. A conductive material including silver nano-particles and having a percent ratio of silver that is greater than or equal to 40% by weight is located in the micro-channels and cured to form an electrically conductive micro-wire. The electrically conductive micro-wire has a width less than or equal to 20 microns and a depth less than or equal to 20 microns. Each micro-wire is electrolessly plated to form a plated layer located at least partially within each micro-channel between the micro-wire and the layer surface in electrical contact with the micro-wire. The plated layer has a thickness less than a thickness of the micro-wire so that the micro-wire and plated layer form the thin-film multi-layer micro-wire.