Using origami design principles to fold reprogrammable mechanical metamaterials

摘要: Although broadly admired for its aesthetic qualities, the art of origami is now being recognized also as a framework mechanical metamaterial design. Working with Miura-ori tessellation, we find that each unit cell this crease pattern mechanically bistable, and by switching between states, compressive modulus overall structure can be rationally reversibly tuned. By virtue their interactions, these stable lattice defects lead to emergent crystallographic structures such vacancies, dislocations, grain boundaries. Each comes from an arrangement reversible folds, highlighting connection metamaterials programmable matter. Given origami’s scale-free geometric character, design directly transferred milli-, micro-, nanometer-size systems.