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Untethered soft robotic matter with passive control of shape morphing and propulsion

Kotikian, Arda and McMahan, Connor and Davidson, Emily C. and Muhammad, Jalilah M. and Weeks, Robert D. and Daraio, Chiara and Lewis, Jennifer A. (2019) Untethered soft robotic matter with passive control of shape morphing and propulsion. Science Robotics, 4 (33). Art. No. eaax7044. ISSN 2470-9476.

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There is growing interest in creating untethered soft robotic matter that can repeatedly shape-morph and self-propel in response to external stimuli. Toward this goal, we printed soft robotic matter composed of liquid crystal elastomer (LCE) bilayers with orthogonal director alignment and different nematic-to-isotropic transition temperatures (T_(NI)) to form active hinges that interconnect polymeric tiles. When heated above their respective actuation temperatures, the printed LCE hinges exhibit a large, reversible bending response. Their actuation response is programmed by varying their chemistry and printed architecture. Through an integrated design and additive manufacturing approach, we created passively controlled, untethered soft robotic matter that adopts task-specific configurations on demand, including a self-twisting origami polyhedron that exhibits three stable configurations and a “rollbot” that assembles into a pentagonal prism and self-rolls in programmed responses to thermal stimuli.

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Daraio, Chiara0000-0001-5296-4440
Additional Information:© 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. This is an article distributed under the terms of the Science Journals Default License. Received April 15, 2019. Accepted July 30, 2019.
Issue or Number:33
Record Number:CaltechAUTHORS:20190802-142724805
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Official Citation:Untethered soft robotic matter with passive control of shape morphing and propulsion BY ARDA KOTIKIAN, CONNOR MCMAHAN, EMILY C. DAVIDSON, JALILAH M. MUHAMMAD, ROBERT D. WEEKS, CHIARA DARAIO, JENNIFER A. LEWIS SCIENCE ROBOTICS 21 Aug 2019: Vol. 4, Issue 33, eaax7044 DOI: 10.1126/scirobotics.aax7044
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97624
Deposited By: George Porter
Deposited On:21 Aug 2019 20:29
Last Modified:03 Oct 2019 21:33

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