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Kirigami is similar to origami but the paper can be cut as well as folded.
Physicists and engineers are interested in applying the princples of kirigami to making 3D structures with applications that range from nanotechnology to aerospace.
Penn researchers are laying out fundamental rules for making cuts and folds in such a way that kirigami can be applied to any scale and any material.
Starting with a hexagonal lattice, the rules define the cuts and folds in such a way that the hexagons keep the same proportions even after the final structure is created.