Sheath-run artificial muscles
- Authors
- Mu, Jiuke; de Andrade, Monica Jung; Fang, Shaoli; Wang, Xuemin; Gao, Enlai; Li, Na; Kim, Shi Hyeong; Wang, Hongzhi; Hou, Chengyi; Zhang, Qinghong; Zhu, Meifang; Qian, Dong; Lu, Hongbing; Kongahage, Dharshika; Talebian, Sepehr; Foroughi, Javad; Spinks, Geoffrey; Kim, Hyun; Ware, Taylor H.; Sim, Hyeon Jun; Lee, Dong Yeop; Jang, Yong woo; KIM, SEON JEONG; Baughman, Ray H.
- Issue Date
- Jul-2019
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Citation
- SCIENCE, v.365, no.6449, pp.150 - 155
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENCE
- Volume
- 365
- Number
- 6449
- Start Page
- 150
- End Page
- 155
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/13382
- DOI
- 10.1126/science.aaw2403
- ISSN
- 0036-8075
- Abstract
- Although guest-filled carbon nanotube yarns provide record performance as torsional and tensile artificial muscles, they are expensive, and only part of the muscle effectively contributes to actuation. We describe a muscle type that provides higher performance, in which the guest that drives actuation is a sheath on a twisted or coiled core that can be an inexpensive yarn. This change from guest-filled to sheath-run artificial muscles increases the maximum work capacity by factors of 1.70 to 2.15 for tensile muscles driven electrothermally or by vapor absorption. A sheath-run electrochemical muscle generates 1.98 watts per gram of average contractile power-40 times that for human muscle and 9.0 times that of the highest power alternative electrochemical muscle. Theory predicts the observed performance advantages of sheath-run muscles.
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