Details

Autor(en) / Beteiligte

• Lima, Márcio D.
• Li, Na
• de Andrade, Mônica Jung
• Fang, Shaoli
• Oh, Jiyoung
• Spinks, Geoffrey M.
• Kozlov, Mikhail E.
• Haines, Carter S.
• Suh, Dongseok
• Foroughi, Javad
• Kim, Seon Jeong
• Chen, Yongsheng
• Ware, Taylor
• Shin, Min Kyoon
• Machado, Leonardo D.
• Fonseca, Alexandre F.
• Madden, John D. W.
• Voit, Walter E.
• Galvão, Douglas S.
• Baughman, Ray H.

Titel

Electrically, Chemically, and Photonically Powered Torsional and Tensile Actuation of Hybrid Carbon Nanotube Yarn Muscles

Ist Teil von

• Science (American Association for the Advancement of Science), 2012-11, Vol.338 (6109), p.928-932

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Science Online_科学在线

Beschreibungen/Notizen

• 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.