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. 2021 Jul 2;8:678486. doi: 10.3389/frobt.2021.678486

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Copyright © 2021 Hu, Rabenorosoa and Ouisse.

This an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Diversity of SMA-Based origami robots. Origami robots arranged by the number of actuators: (A) A deformable wheel robot (Lee et al., 2013). (B) An inchworm-inspired crawling robot (Koh and Cho, 2013). (C) Different versions of a bi-modal locomotion origami robot of Paik’s group (Zhakypov et al., 2015; Zhakypov et al., 2017; Zhakypov and Paik, 2018). (D) A self-deployable lifting structure (Wood et al., 2016). (E) A “shape switching” module with controllable stiffness (Kim J. et al., 2015). (F) A “2D $\to$ 3D” shape-morphing system (Hawkes et al., 2010).