Artificial Muscles from Fishing Line and Sewing Thread
Artificial Muscles from Fishing Line and Sewing Thread
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DOI：
10.1126/science.1246906
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发表时间：
2014-02-21
期刊：
影响因子：
56.9
通讯作者：
Baughman, Ray H.
中科院分区：
文献类型：
--
作者：
Haines, Carter S.;Lima, Marcio D.;Baughman, Ray H.
强大的、大行程的、高应力的人造肌肉的高成本与诸如低循环寿命、滞后和低效率的性能限制相结合，从而限制了应用。我们证明了用于钓鱼线和缝纫线的廉价高强度聚合物纤维可以通过加捻插入容易地转化，以提供快速、可扩展、非滞后、长寿命的拉伸和扭转肌肉。极端扭曲产生的卷曲肌肉可以收缩49%，举起的负荷比相同长度和重量的人类肌肉重100倍以上，每公斤肌肉重量产生5.3千瓦的机械功，类似于喷气发动机产生的机械功。还展示了可根据温度改变孔隙率的编织纺织品，以及可帮助节省能源的致动百叶窗。大行程拉伸驱动的理论和实验结果表明，扭转驱动。
The high cost of powerful, large-stroke, high-stress artificial muscles has combined with performance limitations such as low cycle life, hysteresis, and low efficiency to restrict applications. We demonstrated that inexpensive high-strength polymer fibers used for fishing line and sewing thread can be easily transformed by twist insertion to provide fast, scalable, nonhysteretic, long-life tensile and torsional muscles. Extreme twisting produces coiled muscles that can contract by 49%, lift loads over 100 times heavier than can human muscle of the same length and weight, and generate 5.3 kilowatts of mechanical work per kilogram of muscle weight, similar to that produced by a jet engine. Woven textiles that change porosity in response to temperature and actuating window shutters that could help conserve energy were also demonstrated. Large-stroke tensile actuation was theoretically and experimentally shown to result from torsional actuation.