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Electrothermally Driven Carbon-BasedMaterials as EAPs: Fundamentalsand Device Configurations

Chapter


Abstract


  • Inserting twist into carbon nanotube fibers has enabled novel actuation mechanisms

    that result in both rotating and linear translational movement. Heating the

    carbon nanotube fibers generates a volume increase that drives a partial untwist of

    the fiber. The process is reversible upon cooling with the aid of a return spring

    mechanism. The actuation can be magnified by incorporation of a guest material,

    such as paraffin wax. The torsional stroke and/or torque can be used to perform

    useful work, such as the rotation of an attached paddle for fluid mixing. Various

    device configurations are possible and can be modeled by torsion mechanics.

    Tensile contraction also occurs during fiber untwist and can be greatly magnified

    by overtwisting the yarns to form spring-like coils. The high conductivity of the

    carbon nanotube yarns facilitates the convenient electrical heating and control

    giving high stroke, long-life, and rapid tensile and torsional actuation. This

    chapter summarizes the methods to produce guest-filled carbon nanotube yarns

    and the configurations that can be employed to generate either torsional or tensile

    actuation.

UOW Authors


  •   Foroughi, Javad (external author)
  •   Spinks, Geoff M.
  •   Madden, John D. W. (external author)
  •   Baughman, Ray H. (external author)
  •   Kim, Seon Jeong. (external author)

Publication Date


  • 2016

Citation


  • Foroughi, J., Spinks, G. M., Madden, J. D. W., Baughman, R. H. & Kim, S. Jeong. (2016). Electrothermally Driven Carbon-BasedMaterials as EAPs: Fundamentalsand Device Configurations. In S. Palsule (Ed.), Handbook of Carbon Nanotubes (pp. 455-470). Switzerland: Springer.

International Standard Book Number (isbn) 13


  • 9783319315287

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3731

Book Title


  • Handbook of Carbon Nanotubes

Start Page


  • 455

End Page


  • 470

Place Of Publication


  • Switzerland

Abstract


  • Inserting twist into carbon nanotube fibers has enabled novel actuation mechanisms

    that result in both rotating and linear translational movement. Heating the

    carbon nanotube fibers generates a volume increase that drives a partial untwist of

    the fiber. The process is reversible upon cooling with the aid of a return spring

    mechanism. The actuation can be magnified by incorporation of a guest material,

    such as paraffin wax. The torsional stroke and/or torque can be used to perform

    useful work, such as the rotation of an attached paddle for fluid mixing. Various

    device configurations are possible and can be modeled by torsion mechanics.

    Tensile contraction also occurs during fiber untwist and can be greatly magnified

    by overtwisting the yarns to form spring-like coils. The high conductivity of the

    carbon nanotube yarns facilitates the convenient electrical heating and control

    giving high stroke, long-life, and rapid tensile and torsional actuation. This

    chapter summarizes the methods to produce guest-filled carbon nanotube yarns

    and the configurations that can be employed to generate either torsional or tensile

    actuation.

UOW Authors


  •   Foroughi, Javad (external author)
  •   Spinks, Geoff M.
  •   Madden, John D. W. (external author)
  •   Baughman, Ray H. (external author)
  •   Kim, Seon Jeong. (external author)

Publication Date


  • 2016

Citation


  • Foroughi, J., Spinks, G. M., Madden, J. D. W., Baughman, R. H. & Kim, S. Jeong. (2016). Electrothermally Driven Carbon-BasedMaterials as EAPs: Fundamentalsand Device Configurations. In S. Palsule (Ed.), Handbook of Carbon Nanotubes (pp. 455-470). Switzerland: Springer.

International Standard Book Number (isbn) 13


  • 9783319315287

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3731

Book Title


  • Handbook of Carbon Nanotubes

Start Page


  • 455

End Page


  • 470

Place Of Publication


  • Switzerland