RIS ID
137937
Abstract
Although guest-filled carbon nanotube yarns provide record performance as torsional and tensile artificialmuscles, they are expensive, and only part of themuscle 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.
Grant Number
ARC/CE140100012
Grant Number
ARC/DE12010517
Additional Grant Number
http://purl.org/au-research/grants/ARC/CE140100012, http://purl.org/au-research/grants/ARC/DE12010517
Publication Details
Mu, J., de Andrade, M. Jung., Fang, S., Wang, X., Gao, E., Li, N., Kim, S. Hyeong., Wang, H., Hou, C., Zhang, Q., Zhu, M., Qian, D., Lu, H., Kongahage, D., Talebian, S., Foroughi, J., Spinks, G., Kim, H., Ware, T. H., Sim, H. Jun., Lee, D. Yeop., Jang, Y., Kim, S. Jeong. & Baughman, R. H. (2019). Sheath-run artificial muscles. Science, 365 (6449), 150-155.