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Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell
Advanced Materials, Volume: 35, Issue: 22
Swansea University Author: Anil Bastola
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DOI (Published version): 10.1002/adma.202211902
Abstract
Motile organs have evolved in climbing plants enabling them to find a support and, after secure attachment, to reach for sunlight without investing in a self-supporting stem. Searching movements, the twining of stems, and the coiling of tendrils are involved in successful plant attachment. Such coil...
Published in: | Advanced Materials |
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ISSN: | 0935-9648 1521-4095 |
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Wiley
2023
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URI: | https://cronfa.swan.ac.uk/Record/cronfa65770 |
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v2 65770 2024-03-05 Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell 6775d40c935b36b92058eb10d6454f1a Anil Bastola Anil Bastola true false 2024-03-05 MECH Motile organs have evolved in climbing plants enabling them to find a support and, after secure attachment, to reach for sunlight without investing in a self-supporting stem. Searching movements, the twining of stems, and the coiling of tendrils are involved in successful plant attachment. Such coiling movements have great potential in robotic applications, especially if they are reversible. Here, the underlying mechanism of tendril movement based on contractile fibers is reported, as illustrated by a function–morphological analysis of tendrils in several liana species and the encoding of such a principle in a core–shell multimaterial fiber (MMF) system. MMFs are composed of a shape-memory core fiber (SMCF) and an elastic shell. The shape-memory effect of the core fibers enables the implementation of strain mismatch in the MMF by physical means and provides thermally controlled reversible motion. The produced MMFs show coiling and/or uncoiling behavior, with a high reversible actuation magnitude of ≈400%, which is almost 20 times higher compared with similar stimuli for sensitive soft actuators. The movements in these MMFs rely on the crystallization/melting behavior of oriented macromolecules of SMCF. Journal Article Advanced Materials 35 22 Wiley 0935-9648 1521-4095 actuators; elastic modulus; multimaterial fibers; pre-straining; tendrils 1 6 2023 2023-06-01 10.1002/adma.202211902 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University Other Open access funding enabled and organized by Projekt DEAL. Helmholtz Association European Union's Horizon 2020. Grant Number: No. 824074 Deutsche Forschungsgemeinschaft. Grant Number: EXC-2193/1-390951807 2024-04-25T17:08:34.3705764 2024-03-05T22:15:25.0616666 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Muhammad Farhan 1 Frederike Klimm 2 Marc Thielen 0000-0002-7773-6724 3 Andraž Rešetič 0000-0003-2851-4401 4 Anil Bastola 5 Marc Behl 6 Thomas Speck 0000-0002-2245-2636 7 Andreas Lendlein 0000-0003-4126-4670 8 65770__30155__2a541ede45104f8bae343c2d185fa6ae.pdf 65770.VoR.pdf 2024-04-25T17:05:24.4979392 Output 8629717 application/pdf Version of Record true © 2023 The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License. true eng http://creativecommons.org/licenses/by-nc/4.0/ |
title |
Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell |
spellingShingle |
Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell Anil Bastola |
title_short |
Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell |
title_full |
Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell |
title_fullStr |
Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell |
title_full_unstemmed |
Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell |
title_sort |
Artificial Tendrils Mimicking Plant Movements by Mismatching Modulus and Strain in Core and Shell |
author_id_str_mv |
6775d40c935b36b92058eb10d6454f1a |
author_id_fullname_str_mv |
6775d40c935b36b92058eb10d6454f1a_***_Anil Bastola |
author |
Anil Bastola |
author2 |
Muhammad Farhan Frederike Klimm Marc Thielen Andraž Rešetič Anil Bastola Marc Behl Thomas Speck Andreas Lendlein |
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Journal article |
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Advanced Materials |
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35 |
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22 |
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Swansea University |
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0935-9648 1521-4095 |
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10.1002/adma.202211902 |
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Wiley |
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Faculty of Science and Engineering |
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School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering |
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description |
Motile organs have evolved in climbing plants enabling them to find a support and, after secure attachment, to reach for sunlight without investing in a self-supporting stem. Searching movements, the twining of stems, and the coiling of tendrils are involved in successful plant attachment. Such coiling movements have great potential in robotic applications, especially if they are reversible. Here, the underlying mechanism of tendril movement based on contractile fibers is reported, as illustrated by a function–morphological analysis of tendrils in several liana species and the encoding of such a principle in a core–shell multimaterial fiber (MMF) system. MMFs are composed of a shape-memory core fiber (SMCF) and an elastic shell. The shape-memory effect of the core fibers enables the implementation of strain mismatch in the MMF by physical means and provides thermally controlled reversible motion. The produced MMFs show coiling and/or uncoiling behavior, with a high reversible actuation magnitude of ≈400%, which is almost 20 times higher compared with similar stimuli for sensitive soft actuators. The movements in these MMFs rely on the crystallization/melting behavior of oriented macromolecules of SMCF. |
published_date |
2023-06-01T17:08:33Z |
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