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Thermal Conductivity of Liquid/CNT Core-Shell Nanocomposites

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  • yutaka Yamada
  • Alexandros Askounis
  • Tatsuya Ikuta
  • Koji Takahashi
  • Yasuyuki Takata
  • Khellil Sefiane

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Original languageEnglish
Article number 015104
JournalJournal of applied physics
Issue number1
Early online date4 Jan 2017
Publication statusE-pub ahead of print - 4 Jan 2017


Hollow carbon nanotubes (CNTs) were impregnated with an ionic liquid, resulting in a composite core-shell nanostructure. Liquid infusion was verified by transmission electron microscopy and rigorous observations unveiled that the nanocomposite is stable, i.e. liquid did not evaporate owing to its low vapor pressure. A series of individual nanostructures were attached on T-type heat sensors and their thermal behavior was evaluated. The liquid core was found to reduce the thermal conductivity of the base structure, CNT, from ca. 28 W/mK to ca. 15 W/mK. These findings could contribute to a better understanding of nanoscale thermal science and potentially to applications such as nanodevices thermal management and thermoelectric devices.

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