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  Honeycomb actuators inspired by the unfolding of ice plant seed capsules

Guiducci, L., Razghandi, K., Bertinetti, L., Turcaud, S., Rüggeberg, M., Weaver, J. C., et al. (2016). Honeycomb actuators inspired by the unfolding of ice plant seed capsules. PLoS One, 11(11): e0163506. doi:10.1371/journal.pone.0163506.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-BCE7-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-F747-7
Genre: Journal Article

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 Creators:
Guiducci, Lorenzo1, Author              
Razghandi, Khashayar2, Author              
Bertinetti, Luca3, Author              
Turcaud, Sébastien1, Author              
Rüggeberg, Markus, Author
Weaver, James C., Author
Fratzl, Peter4, Author              
Burgert, Ingo, Author
Dunlop, John W. C.1, Author              
Affiliations:
1John Dunlop, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863291              
2Michaela Eder, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863293              
3Luca Bertinetti (Indep. Res.), Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2231637              
4Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863294              

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Free keywords: Open Access
 Abstract: Plant hydro-actuated systems provide a rich source of inspiration for designing autonomously morphing devices. One such example, the pentagonal ice plant seed capsule, achieves complex mechanical actuation which is critically dependent on its hierarchical organization. The functional core of this actuation system involves the controlled expansion of a highly swellable cellulosic layer, which is surrounded by a non-swellable honeycomb framework. In this work, we extract the design principles behind the unfolding of the ice plant seed capsules, and use two different approaches to develop autonomously deforming honeycomb devices as a proof of concept. By combining swelling experiments with analytical and finite element modelling, we elucidate the role of each design parameter on the actuation of the prototypes. Through these approaches, we demonstrate potential pathways to design/develop/construct autonomously morphing systems by tailoring and amplifying the initial material's response to external stimuli through simple geometric design of the system at two different length scales.

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 Dates: 2016-11-022016
 Publication Status: Published in print
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 Identifiers: DOI: 10.1371/journal.pone.0163506
PMID: 0511
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Title: PLoS One
Source Genre: Journal
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Publ. Info: San Francisco, CA : Public Library of Science
Pages: - Volume / Issue: 11 (11) Sequence Number: e0163506 Start / End Page: - Identifier: ISSN: 1932-6203