Computational wrapping: A novel method for wrapping 3D-curved surfaces with brittle, nonstretchable materials for conformable devices

In this talk, we propose a novel method to make conformable devices on non-zero Gaussian surfaces, i.e. flexible devices that can be transformed into any complex 3-dimensional shape. We used computational polyhedral edge unfolding methods to obtain planar figures of arbitrary complex 3-dimensional shapes. It is well-known that 2-dimensional substrates cannot be attached on the non-zero surfaces without stretching, however, by computational approximation of 3-D surface and making it flat by algorithmic method, we could convert any 3-D shapes into a 2-D sheet. We can make devices having the programmed unfolded figures and return it to the original 3D shape. In this way, we could make electroluminescent lighting and primary battery which can conformably wrap diverse 3-D surfaces without failure. Shape programmable devices with computational wrapping design can cover anywhere on the 3-dimensional shapes including human skin and are able to be applied not only personalized wearable or skin attachable devices but also various industries, such as automotive design, clothing, and fashion accessories, medical services and so on.