  This study starts from the counter-intuitive question of how we can render a
conventional stiff, non-stretchable and even brittle material conformable so
that it can fully wrap around a curved surface, such as a sphere, without
failure. Here, we answer this conundrum by extending geometrical design in
computational kirigami (paper cutting and folding) to paper wrapping. Our
computational paper wrapping-based approach provides the more robust and
reliable fabrication of conformal devices than paper folding approaches. This
in turn leads to a significant increase in the applicability of computational
kirigami to real-world fabrication. This new computer-aided design transforms
2D-based conventional materials, such as Si and copper, into a variety of
targeted conformal structures that can fully wrap the desired 3D structure
without plastic deformation or fracture. We further demonstrated that our novel
approach enables a pluripotent design platform to transform conventional
non-stretchable 2D-based devices, such as electroluminescent lighting and a
paper battery, into wearable and conformable 3D curved devices.
