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Issue 41, 2016
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Hydro-actuation of hybrid carbon nanotube yarn muscles

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Hybrid hydro-responsive actuators are developed by infiltrating carbon nanotube yarns using poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate). These actuators demonstrate impressive rotation and contraction in response to water due to volumetric expansion of the helical arrangement of carbon nanotubes. The total torsional stroke is 3720 revolutions per m and the simultaneously generated contractive strain reaches 24% at a paddle-to-yarn mass ratio of 350. The contraction output can furthermore be significantly enhanced by constraining the rotational motion and it reaches 68% with an applied stress of 1 MPa. Additionally, hybrid yarns exhibit an approximately linear response to humidity changes and show extra capability of electrical actuation, which, combined with the excellent hydro-actuation performance, endow them with great potential for a variety of applications including artificial muscles, hydro-driven generators, moisture switches and microfluidic mixers.

Graphical abstract: Hydro-actuation of hybrid carbon nanotube yarn muscles

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The article was received on 04 Aug 2016, accepted on 09 Sep 2016 and first published on 12 Sep 2016

Article type: Paper
DOI: 10.1039/C6NR06185K
Citation: Nanoscale, 2016,8, 17881-17886
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    Hydro-actuation of hybrid carbon nanotube yarn muscles

    X. Gu, Q. Fan, F. Yang, L. Cai, N. Zhang, W. Zhou, W. Zhou and S. Xie, Nanoscale, 2016, 8, 17881
    DOI: 10.1039/C6NR06185K

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