Stretchable conductors

A stretchable electrical device, comprising:

• a first electrical contact and a second electrical contact, wherein the first and the second electrical contacts are on an elastomeric polymeric substrate, optionally wherein at least one of the first electrical contact and the second electrical contact are soldered to the second surface area portion of the braided metal wire;
• an electrical interconnect between the first electrical contact and the second electrical contact, wherein the electrical interconnect comprises an elongate braided metal wire on a major surface of the elastomeric polymeric substrate, wherein the metal wire comprises a plurality of metal wire strands and comprises a first end and a second end, wherein the metal wire comprises at least one serpentine region between the first end and the second end, and wherein the serpentine region of the metal wire lies on the major surface of the substrate;
• the serpentine region of the metal wire comprising a first surface area portion embedded in the major surface of the substrate and a second surface area portion unembedded in the substrate and exposed, wherein the second surface area portion comprises about 1% to about 80% of the total surface area of the metal wire.