Measurement of thermal conductivity of individual multiwalled carbon nanotubes by the 3-ω method
2005; American Institute of Physics; Volume: 87; Issue: 1 Linguagem: Inglês
10.1063/1.1957118
ISSN1520-8842
AutoresTae Y. Choi, Dimos Poulikakos, Joy Tharian, U. Sennhauser,
Tópico(s)Graphene research and applications
ResumoThe thermal conductivity of individual multiwalled carbon nanotubes (outer diameter of ∼45nm) was obtained by employing the 3-ω method. To this end, the third-harmonic amplitude as a response to the applied alternate current at fundamental frequency (ω) is expressed in terms of thermal conductivity. A microfabricated device composed of a pair of metal electrodes 1μm apart is used to place a single nanotube across the designated metal electrodes by utilizing the principle of dielectrophoresis. The multiwalled carbon nanotube was modeled as a one-dimensional diffusive energy transporter and its thermal conductivity was measured to be 650–830W∕mK at room temperature.
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