Superelastic alloy based electrical interconnects for highly stretchable electronics

Abstract To achieve stretchable inorganic electronics, improving elastic stretchability of the electrical interconnects becomes a bottleneck needed to be addressed. Here, we propose material Ni-Ti superelastic alloy for design and fabrication deformable interconnects, whose intrinsic property overcomes low strain limit conventional metals. The serpentine interconnect made by with an ~7.5% represents much higher than Cu interconnect. deformation behavior is systematically investigated through finite element analysis (FEA) simulations experiments. results reveal that exhibits up 196%, its resistance only changes 0.4% 100% strain. Moreover, potentials challenges other alloys as are discussed. proposed fundamentally boost properties which would open opportunities flexible electronics.