Giant-Stroke, Superelastic Carbon Nanotube Aerogel Muscles

Aliev, A. E. and Oh, J. and Kozlov, M. E. and Kuznetsov, A. A. and Fang, S. and Fonseca, A. F. and Ovalle, R. and Lima, M. D. and Haque, M. H. and Gartstein, Y. N. and Zhang, M. and Zakhidov, A. A. and Baughman, R. H.. (2009) Giant-Stroke, Superelastic Carbon Nanotube Aerogel Muscles. Science, 323 (5921). p. 1575. ISSN 0036-8075

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Improved electrically powered artificial muscles are needed for generating force, moving objects, and accomplishing work. Carbon nanotube aerogel sheets are the sole component of new artificial muscles that provide giant elongations and elongation rates of 220% and (3.7 x 104)% per second, respectively, at operating temperatures from 80 to 1900 kelvin. These solid-state–fabricated sheets are enthalpic rubbers having gaslike density and specific strength in one direction higher than those of steel plate. Actuation decreases nanotube aerogel density and can be permanently frozen for such device applications as transparent electrodes. Poisson's ratios reach 15, a factor of 30 higher than for conventional rubbers. These giant Poisson's ratios explain the observed opposite sign of width and length actuation and result in rare properties: negative linear compressibility and stretch densification.

Item Type: Article
Additional Information: From [Aliev, Ali E., et al. "Giant-Stroke, Superelastic Carbon Nanotube Aerogel Muscles." Science 5921 (2009): 1575 - 1578. ]. Reprinted with permission from AAAS.
InterNano Taxonomy: Nanoscale Objects and Nanostructured Materials > Nanotubes > Carbon nanotubes
Collections: Nanomanufacturing Research Collection
Related URLs:
Depositing User: Rebecca Reznik-Zellen
Date Deposited: 05 Nov 2009 21:32
Last Modified: 05 Nov 2009 21:32

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