Advanced Materials

Highly Conductive Sheets from Millimeter-Long Single-Walled Carbon Nanotubes and Ionic Liquids: Application to Fast-Moving, Low-Voltage Electromechanical Actuators Operable in Air

Authors

  • Ken Mukai,

    1. Research Institute for Cell Engineering National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka, Ikeda Osaka 563-8577 (Japan)
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  • Kinji Asaka,

    Corresponding author
    1. Research Institute for Cell Engineering National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka, Ikeda Osaka 563-8577 (Japan)
    • Research Institute for Cell Engineering National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka, Ikeda Osaka 563-8577 (Japan).
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  • Takushi Sugino,

    1. Research Institute for Cell Engineering National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka, Ikeda Osaka 563-8577 (Japan)
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  • Kenji Kiyohara,

    1. Research Institute for Cell Engineering National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka, Ikeda Osaka 563-8577 (Japan)
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  • Ichiroh Takeuchi,

    1. Research Institute for Cell Engineering National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka, Ikeda Osaka 563-8577 (Japan)
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  • Naohiro Terasawa,

    1. Research Institute for Cell Engineering National Institute of Advanced Industrial Science and Technology (AIST) 1-8-31 Midorigaoka, Ikeda Osaka 563-8577 (Japan)
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  • Don N. Futaba,

    1. Nanotube Research Center National Institute of Advanced Industrial Science and Technology (AIST) Central 5, 1-1-1 Higashi, Tsukuba Ibaraki 305-8565 (Japan)
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  • Kenji Hata,

    1. Nanotube Research Center National Institute of Advanced Industrial Science and Technology (AIST) Central 5, 1-1-1 Higashi, Tsukuba Ibaraki 305-8565 (Japan)
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  • Takanori Fukushima,

    1. Advanced Science Institute, RIKEN 2-1 Hirosawa, Wako Saitama 351-0198 (Japan)
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  • Takuzo Aida

    Corresponding author
    1. ERATO–SORST Nanospace Project Japan Science and Technology Agency (JST) National Museum of Emerging Science and Innovation 2-41 Aomi, Koto-ku, Tokyo 135-0064 (Japan)
    • ERATO–SORST Nanospace Project Japan Science and Technology Agency (JST) National Museum of Emerging Science and Innovation 2-41 Aomi, Koto-ku, Tokyo 135-0064 (Japan).
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Abstract

Ionic liquids allow millimeter-long single-walled carbon nanotubes to associate tightly, forming a free-standing sheet with superb mechanical and electrical properties. An actuator strip, fabricated by sandwiching an ionic-liquid-gel electrolyte layer with the nanotubes sheets obtained exhibits a large deformation in quick response (4 mm per 0.05 s) to low applied voltages, and a high durability upon 10 000 times continuous operations.

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