Self-folding of polymer sheets using local light absorption

By Y. Liu, Julie K. Boyles, J. Genzer, Michael D. Dickey. 2012

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Morphing in nature and beyond: a review of natural and synthetic shape-changing materials and mechanisms (2016, background): “1039/C0SM00487A [200] Liu Y, Boyles JK, Genzer J, Dickey MD (2012) Selffolding of polymer sheets using local light absorption.”
Fluid-driven origami-inspired artificial muscles (2017, unknown): “h = √ (L0 2 − L2) = (S0(2) − (D sin θ)(2)) 1 2 (14)”
Soft Robots Manufacturing: A Review (2018, background): “, 2016) or UV (Liu et al., 2012), they morph into a programmed shape.”
Waterbomb base: a symmetric single-vertex bistable origami mechanism (2014, background): “For example, a flat pattern that folds itself into a box is a common test bed that has been used to investigate smart materials and actuators involving thermally sensitive hydrogels [2], prestrained polymers [3], magneto active elastomers [4], and foldable PCB arrays [5], to name a few examples.”
Active origami by 4D printing (2014, background): “Active materials, especially active polymers, are a natural choice for the design of active origami; e.g., origami using shape memory polymers (Liu et al 2012), light activated polymers (Ryu et al 2012), and shape memory alloys (Peraza-Hernandez et al 2013) were reported recently.”