Rapid Soft Morphing Locomotion Inspired by Venus Flytrap

The Venus flytrap can close leaves within 100 ms by using bistability of its leaf. Inspiring the Venus flytrap, we develop a flytrap robot generating a rapid soft morphing locomotion by utilizing snap-through of bistability.

In this study, we undertstand the basic principle of bi-stable structures, design various novel bistable structures and apply the bistable structures to practical applications. Using shape memory alloy(SMA), the robot actuates artificial leaves made from asymmetrically laminated carbon fiber reinforced prepregs(CFRP). The bending propagates from one edge to the entire surface and eventually generates an overall shape change. The curvature change of the artificial leaf is 18 m-1 within 100 ms when closing.

Related papers and patents

Seung-Won Kim, Je-Sung Koh, Jong-Gu Lee, JunghyunRyu, Maenghyo Cho, and Kyu-Jin Cho, “Flytrap inspired robot using structurally integrated actuation based on bistability and developable surface,” Bioinspiration & Biomimetics, Vol.9, No.3, 2014. [PDF]

Seung-won Kim, Je-Sung Koh, JunghyunRyu, Jonggu Lee, Maenghyo Cho, and Kyu-Jin Cho, “Development of an energy efficient lightweight gripper inspired by the flytrap,” International Symposium on Green Manufacturing and Applications (ISGMA), Aug. 2012. Best poster award

Seung-Won Kim, Je-Sung Koh, Maenghyo Cho, and Kyu-Jin Cho, “Soft morphing of flytrap robot using bending propagating actuation,” Journal of Institute of Control Robotics and Systems (ICROS), Vol. 18, No. 3, pp. 168-174, Mar. 2012.

Seung-Won Kim, Je-Sung Koh, and Kyu-Jin Cho, “Active morphing robot inspired by the pre-strained fiber structure of the Venus flytrap,” 8th International Conference on Ubiquitous Robots and Ambient Intelligence(URAI), p. 876, 2011.

Seung-Won Kim, Je-Sung Koh, Maenghyo Cho and Kyu-Jin Cho, “Design & Analysis a Flytrap Robot using Bi-stable Composite,” Proceedings of the 2011 IEEE International Conference on Robotics and Automation(ICRA), May 2011. [PDF]

Seung-Won Kim, Je-Sung Koh and Kyu-Jin Cho, “Bio-mimetic flytrap robot: sensing & trapping,” International Symposium on Nature-inspired Technology(ISNIT), 2010.

Seung-Won Kim, Je-Sung Koh, Maenghyo Cho and Kyu-Jin Cho, “Towards a Bio-mimetic Flytrap Robot Based on a Snap- Through Mechanism,” Proceedings of the 2010 3rd IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics(BIOROB), pp. 534-539, Sep. 2010. Best Student Paper Award [PDF]

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· E-mail : swkim16@kist.re.kr
· Affiliation : 한국과학기술연구원 (Korea Institute of Science and Technology, KIST)

Ph.D

Seung-Won Kim