Thermal boundary conductance between multi-walled carbon nanotubes

Yutaka Yamada, Takashi Nishiyama, Takahiro Yasuhara, Koji Takahashi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Interfacial thermal transport of multi-walled carbon nanotubes (MWNTs) is investigated by using bulk pellet specimens. Steady-state conduction method gives thermal conductivity of 1 to 4 W/mK for the pellets with mass density from 0.2 to 0.35 g/cm3. This low thermal conductivity is due to the thermal boundary conductance between the nanotubes. Computational analysis is conducted for the pellet modeled as a random network of spherocylinders (SCs) and calculated dependency of thermal conductivity on pellet density shows good agreement with experimental data when we treat non-uniform SCs. By comparing the experimental and computational results, the thermal boundary conductance between two MWNTs can be taken as 1.5×10-8 W/K. This result agrees well with the reported data obtained by individual measurement, which suggests this simple method is applicable to probe the interfacial thermal phenomena of nanomaterials. An improved scaling law, k ∝ ρ2.14, for thermal conductivity of MWNTs aggregations is also proposed and discussed.

Original languageEnglish
Pages (from-to)190-198
Number of pages9
JournalJournal of Thermal Science and Technology
Volume7
Issue number1
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Carbon Nanotubes
pellets
Carbon nanotubes
Thermal conductivity
thermal conductivity
carbon nanotubes
Scaling laws
Nanostructured materials
scaling laws
Nanotubes
nanotubes
Agglomeration
conduction
Hot Temperature
probes

Keywords

  • Carbon nanotubes
  • Thermal boundary conductance
  • Thermal conductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)

Cite this

Thermal boundary conductance between multi-walled carbon nanotubes. / Yamada, Yutaka; Nishiyama, Takashi; Yasuhara, Takahiro; Takahashi, Koji.

In: Journal of Thermal Science and Technology, Vol. 7, No. 1, 2012, p. 190-198.

Research output: Contribution to journalArticle

Yamada, Yutaka ; Nishiyama, Takashi ; Yasuhara, Takahiro ; Takahashi, Koji. / Thermal boundary conductance between multi-walled carbon nanotubes. In: Journal of Thermal Science and Technology. 2012 ; Vol. 7, No. 1. pp. 190-198.
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