Unlike traditional printed circuit boards, which are flat, 3D circuitry enables components to be stacked and integrated vertically — dramatically reducing the footprint required for devices.  Advancing the frontiers of 3D printed circuits, a team of researchers from the National University of Singapore (NUS) has developed a state-of-the-art technique – known as tension-driven CHARM3D – to fabricate three-dimensional (3D), self-healing electronic circuits. This new technique enables the 3D printing of free-standing metallic structures without requiring support materials and...