Electrically, Chemically, and Photonically Powered Torsional and Tensile Actuation of Hybrid Carbon Nanotube Yarn Musclesdankan 添加于 2012-12-11 14:52:00 35次阅读 | 0次推荐 | 0个评论
Artificial muscles are of practical interest, but few types have been commercially exploited. Typical problems include slowresponse, low strain and force generation, short cycle life, use of electrolytes, and low energy efficiency. We have designedguest-filled, twist-spun carbon nanotube yarns as electrolyte-free muscles that provide fast, high-force, large-stroke torsionaland tensile actuation. More than a million torsional and tensile actuation cycles are demonstrated, wherein a muscle spinsa 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 yarnhost. Demonstrations include torsional motors, contractile muscles, and sensors that capture the energy of the sensing processto mechanically actuate.
期卷页： 11/16/2012 第338卷 第6109期 928~932页
学科领域：工程材料 » 有机高分子材料 » 仿生材料