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Sheath-run artificial muscles

Title
Sheath-run artificial muscles
Author
김선정
Keywords
HELICAL FIBER ACTUATORS; ELECTRICAL ENERGY; NANOTUBE
Issue Date
2019-07
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Citation
SCIENCE, v. 365, no. 6449, Page. 150-155
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.
URI
https://science.sciencemag.org/content/365/6449/150https://repository.hanyang.ac.kr/handle/20.500.11754/152181
ISSN
0036-8075; 1095-9203
DOI
10.1126/science.aaw2403
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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