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Stimuli-responsive behavior of a multi-material 3D printed flower: (a) Programmed (temporary) shape of the multi-material flower held at 20 °C; (b) heating to 50 °C, resulting in the flower’s outer buds opening; (c) the flower fully bloomed at 70 °C; (d–f) simulation images of the complete multi-material flower blooming process. Reproduced with permission from [61].
