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|a 10.1002/adma.201904093
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|a eng
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|a Spinks, Geoffrey M
|e verfasserin
|4 aut
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|a Advanced Actuator Materials Powered by Biomimetic Helical Fiber Topologies
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|c 2020
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 08.01.2021
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|a Date Revised 08.01.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Helical constructs are ubiquitous in nature at all size domains, from molecular to macroscopic. The helical topology confers unique mechanical functions that activate certain phenomena, such as twining vines and vital cellular functions like the folding and packing of DNA into chromosomes. The understanding of active mechanical processes in plants, certain musculature in animals, and some biochemical processes in cells provides insight into the versatility of the helix. Most of these natural systems consist of helically oriented filaments embedded in a compliant matrix. In some cases, the matrix can change volume and in others the filaments can contract and the matrix is passive. In both cases, the helically arranged fibers determine the overall shape change with a great variety of responses involving length contraction/elongation, twisting, bending, and coiling. Synthetic actuator materials and systems that employ helical topologies have been described recently and demonstrate many fascinating and complex shape changes. However, significant new opportunities exist to mimic some of the most remarkable actions in nature, including the Vorticella's coiling stalk and DNA's supercoils, in the quest for superior artificial muscles
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|a Journal Article
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|a Review
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|a actuators
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|a fibers
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|a helices
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|a Smart Materials
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|t Advanced materials (Deerfield Beach, Fla.)
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|g 32(2020), 18 vom: 15. Mai, Seite e1904093
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|u http://dx.doi.org/10.1002/adma.201904093
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