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Issue 17, 2018
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Self-plied and twist-stable carbon nanotube yarn artificial muscles driven by organic solvent adsorption

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Abstract

Artificial yarn/fiber muscles have recently attracted considerable interest for various applications. These muscles can provide large-stroke tensile and torsional actuations, resulting from inserted twists. However, tensional tethering of twisted muscles is generally needed to avoid muscle snarling and untwisting. In this paper a carbon nanotube (CNT) yarn muscle that is tethering-free and twist-stable is reported. The yarn muscle is prepared by allowing the self-plying of a coiled CNT yarn. When driven by acetone adsorption, this muscle shows decoupled actuations, which provide fast and reversible ∼13.3% contraction strain against a constant stress corresponding to ∼38 000 times the muscle weight but almost zero torsional strokes. The cycling test shows that the self-plied muscle has very good structural stability and actuation reversibility. Applied joule heating can help increase the desorption of acetone and increase the operation frequency of the self-plied muscle. Furthermore, by controlling the coupling between the joule heating and acetone adsorption/desorption, tensile actuations from negative to positive have been achieved. This twist-stable feature could considerably facilitate the practical applications of such muscle.

Graphical abstract: Self-plied and twist-stable carbon nanotube yarn artificial muscles driven by organic solvent adsorption

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Publication details

The article was received on 13 Feb 2018, accepted on 07 Apr 2018 and first published on 09 Apr 2018


Article type: Paper
DOI: 10.1039/C8NR01300D
Citation: Nanoscale, 2018,10, 8180-8186
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    Self-plied and twist-stable carbon nanotube yarn artificial muscles driven by organic solvent adsorption

    K. Jin, S. Zhang, S. Zhou, J. Qiao, Y. Song, J. Di, D. Zhang and Q. Li, Nanoscale, 2018, 10, 8180
    DOI: 10.1039/C8NR01300D

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