期刊
SCIENCE
卷 365, 期 6449, 页码 145-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaw2502
关键词
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资金
- National Institute of Neurological Disorders and Stroke [5R01NS086804]
- National Science Foundation (NSF) Center for Materials Science and Engineering [DMR-1419807]
- NSF Center for Neurotechnology [EEC-1028725]
- Simons Postdoctoral Fellowship
- Delta Electronics, Inc.
Artificial muscles may accelerate the development of robotics, haptics, and prosthetics. Although advances in polymer-based actuators have delivered unprecedented strengths, producing these devices at scale with tunable dimensions remains a challenge. We applied a high-throughput iterative fiber-drawing technique to create strain-programmable artificial muscles with dimensions spanning three orders of magnitude. These fiber-based actuators are thermally and optically controllable, can lift more than 650 times their own weight, and withstand strains of >1000%. Integration of conductive nanowire meshes within these fiber-based muscles offers piezoresistive strain feedback and demonstrates long-term resilience across >10(5) deformation cycles. The scalable dimensions of these fiber-based actuators and their strength and responsiveness may extend their impact from engineering fields to biomedical applications.
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