The Alan G. MacDiarmid NanoTech Institute, The University of Texas at Dallas, Richardson, TX, 75080, USA.
Nano-Science & Technology Center, LINTEC OF AMERICA, INC., Richardson, TX, 75081, USA.
Adv Mater. 2017 Aug;29(31). doi: 10.1002/adma.201700870. Epub 2017 Jun 19.
While artificial muscle yarns and fibers are potentially important for many applications, the combination of large strokes, high gravimetric work capacities, short cycle times, and high efficiencies are not realized for these fibers. This paper demonstrates here electrochemically powered carbon nanotube yarn muscles that provide tensile contraction as high as 16.5%, which is 12.7 times higher than previously obtained. These electrochemical muscles can deliver a contractile energy conversion efficiency of 5.4%, which is 4.1 times higher than reported for any organic-material-based artificial muscle. All-solid-state parallel muscles and braided muscles, which do not require a liquid electrolyte, provide tensile contractions of 11.6% and 5%, respectively. These artificial muscles might eventually be deployed for a host of applications, from robotics to perhaps even implantable medical devices.
虽然人工肌肉纱线和纤维在许多应用中具有潜在的重要性，但这些纤维并未实现大冲程、高重量工作能力、短循环时间和高效率的结合。本文在这里展示了电化学驱动的碳纳米管纱线肌肉，其提供的拉伸收缩率高达 16.5%，比之前获得的高 12.7 倍。这些电化学肌肉可以提供 5.4%的收缩能量转换效率，比任何基于有机材料的人工肌肉报告的效率高 4.1 倍。无需液体电解质的全固态平行肌肉和编织肌肉分别提供 11.6%和 5%的拉伸收缩率。这些人工肌肉最终可能会被用于各种应用，从机器人技术到甚至可植入医疗设备。
