Shape-morphing architected sheets with non-periodic cut patterns

In this work, we investigate the out-of-plane shape morphing capabilities of elastic sheets with architected cut patterns. Our cutting strategy transforms a sheet into an arrangement of tiles connected by flexible hinges, that feature a local mechanism-like behavior that enables large deformations with the application of small forces. By leveraging the kinematic frustration that arises in non-periodic architectures, our sheets buckle out of plane when actuated at few boundary points. This global buckling results into three-dimensional dome-like objects and patterns of wrinkles whose extent is independent from the tiles’ size. Relying on mono-layer materials, cutting fabrication techniques and easy-to-control tensile boundary loads provides an effective strategy for the realization of pop-up structures. While this work is centered on soft materials, we explore the extension to stiff elastic-plastic materials that can retain their shape upon load removal.