Paper Title:
Carbon Nanotube Yarns as High Load Actuators and Sensors
  Abstract

Carbon nanotubes have attracted extensive attention in the past few years because of their appealing mechanical and electronic properties. Yarns made through spinning multiwall carbon nanotubes (MWNTs) have been reported. Here we study the application of these yarns as electrochemical actuators, and as force sensors. MWNT yarns are mechanically strong with tensile strengths reaching one GPa. When charge is stored in the yarns they change in length. This is thought to be because of a combination of electrostatic and quantum chemical effects. We report strains up to 0.6 %. The charged yarns can also generate current and change in voltage in response to a change in the applied tension. Electrostatic and quantum effects contributing to actuation are introduced along with the effect of the yarn geometry on actuation and other contributing factors.

  Info
Periodical
Edited by
Pietro VINCENZINI, Yoseph BAR-COHEN and Federico CARPI
Pages
65-74
DOI
10.4028/www.scientific.net/AST.61.65
Citation
T. Mirfakhrai, J. Y. Oh, M. Kozlov, S. L. Fang, M. Zhang, R. H. Baughman, J. D. Madden, "Carbon Nanotube Yarns as High Load Actuators and Sensors", Advances in Science and Technology, Vol. 61, pp. 65-74, 2008
Online since
September 2008
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$32.00
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