Electrically, Chemically, and Photonically Powered Torsional and Tensile Actuation of Hybrid Carbon Nanotube Yarn Muscles
Electrically, Chemically, and Photonically Powered Torsional and Tensile Actuation of Hybrid Carbon Nanotube Yarn Muscles
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DOI：
10.1126/science.1226762
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发表时间：
2012-11-16
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：
Lima, Marcio D.;Li, Na;Baughman, Ray H.
人造肌肉具有实际意义，但很少有类型的人造肌肉被商业化利用。典型的问题包括响应慢、产生的应变和力低、循环寿命短、使用电解质和能量效率低。我们已经设计了客人填充，捻纺碳纳米管纱线作为无电解质肌肉，提供快速，高力，大行程扭转和拉伸驱动。演示了超过一百万个扭转和拉伸致动循环，其中肌肉以平均11，500转/分钟旋转转子或以1200循环/分钟提供3%的拉伸收缩。混合纱线的电、化学或光子激发改变客体尺寸并产生纱线主体的扭转旋转和收缩。演示包括扭转电机，收缩肌肉和传感器，捕获传感过程的能量，以机械驱动。
Artificial muscles are of practical interest, but few types have been commercially exploited. Typical problems include slow response, low strain and force generation, short cycle life, use of electrolytes, and low energy efficiency. We have designed guest-filled, twist-spun carbon nanotube yarns as electrolyte-free muscles that provide fast, high-force, large-stroke torsional and tensile actuation. More than a million torsional and tensile actuation cycles are demonstrated, wherein a muscle spins a rotor at an average 11,500 revolutions/minute or delivers 3% tensile contraction at 1200 cycles/minute. Electrical, chemical, or photonic excitation of hybrid yarns changes guest dimensions and generates torsional rotation and contraction of the yarn host. Demonstrations include torsional motors, contractile muscles, and sensors that capture the energy of the sensing process to mechanically actuate.