Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/65461
Type: Artigo de periódico
Title: Electrically, Chemically, and Photonically Powered Torsional and Tensile Actuation of Hybrid Carbon Nanotube Yarn Muscles
Author: Lima, MD
Li, N
de Andrade, MJ
Fang, SL
Oh, J
Spinks, GM
Kozlov, ME
Haines, CS
Suh, D
Foroughi, J
Kim, SJ
Chen, YS
Ware, T
Shin, MK
Machado, LD
Fonseca, AF
Madden, JDW
Voit, WE
Galvao, DS
Baughman, RH
Abstract: 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.
Country: EUA
Editor: Amer Assoc Advancement Science
Rights: fechado
Identifier DOI: 10.1126/science.1226762
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
WOS000311083600038.pdf890.91 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.