Unipolar stroke, electroosmotic pump carbon nanotube yarn muscles

Author:

Chu Hetao12ORCID,Hu Xinghao13ORCID,Wang Zhong14ORCID,Mu Jiuke1ORCID,Li Na15ORCID,Zhou Xiaoshuang6,Fang Shaoli1,Haines Carter S.17ORCID,Park Jong Woo8,Qin Si9ORCID,Yuan Ningyi6,Xu Jiang3,Tawfick Sameh10ORCID,Kim Hyungjun1112ORCID,Conlin Patrick11ORCID,Cho Maenghyo1112ORCID,Cho Kyeongjae11ORCID,Oh Jiyoung1ORCID,Nielsen Steven4ORCID,Alberto Kevin A.4,Razal Joselito M.9ORCID,Foroughi Javad13ORCID,Spinks Geoffrey M.14ORCID,Kim Seon Jeong8ORCID,Ding Jianning36ORCID,Leng Jinsong2ORCID,Baughman Ray H.1ORCID

Affiliation:

1. Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, TX 75080, USA.

2. Center for Composite Materials and Structures, Harbin Institute of Technology (HIT), Harbin 150080, China.

3. Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China.

4. Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA.

5. MilliporeSigma, Materials Science, Milwaukee, WI 53209, USA.

6. Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.

7. Opus 12 Incorporated, Berkeley, CA 94710, USA.

8. Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul 04763, South Korea.

9. Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia.

10. Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA.

11. Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, TX 75080, USA.

12. Department of Mechanical and Aerospace Engineering, Seoul National University, Gwanak-gu, Seoul 08826, The Republic of Korea.

13. Faculty of Engineering and Information Sciences, University of Wollongong, Australia, Wollongong, New South Wales 2500, Australia.

14. Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, New South Wales 2522, Australia.

Abstract

Pump it up Carbon nanotube yarns can be used as electrochemical actuators because infiltration with ions causes a contraction in length and an expansion in diameter. Either positive or negative ions can cause this effect. Chu et al. constructed an all-solid-state muscle that eliminated the need for an electrolyte bath, which may expand the potential for its use in applications. By infiltrating the yarns with charged polymers, the fibers start partially swollen, so the length can increase through the loss of ions. It is thus possible to increase the overall stroke of the muscle. Further, these composite materials show a surprising increase in stroke with scan rate. Science , this issue p. 494

Funder

Australian Research Council

National Natural Science Foundation of China

National Research Foundation of Korea

National Key Research and Development Program of China Stem Cell and Translational Research

Program of Introducing Talents of Discipline to Universities

Air Force Office of Scientific Research Grant

Robert A. Welch Foundation grant

DARPA SHRIMP program

National Research Foundation of Korea by Creative Materials Discovery Program

Alfred Deakin Postdoctoral Research Fellowship

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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