Programming reversibly self-folding origami with micropatterned photo-crosslinkable polymer trilayers.

Na, Jun-Hee; Evans, Arthur A; Bae, Jinhye; Chiappelli, Maria C; Santangelo, Christian D; Lang, Robert J; Hull, Thomas C; Hayward, Ryan C · Adv Mater · 2015

basic_science · Level V

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Abstract

Self-folding microscale origami patterns are demonstrated in polymer films with control over mountain/valley assignments and fold angles using trilayers of photo-crosslinkable copolymers with a temperature-sensitive hydrogel as the middle layer. The characteristic size scale of the folds W = 30 μm and figure of merit A/ W (2) ≈ 5000, demonstrated here represent substantial advances in the fabrication of self-folding origami.