Thermal expansion of single wall carbon nanotubes

H. Jiang, B. Liu, Y. Huang, K. C. Hwang

Research output: Contribution to journalArticle

256 Scopus citations

Abstract

We have developed an analytical method to determine the coefficient of thermal expansion (CTE) for single wall carbon nanotubes (CNTs). We have found that all CTEs are negative at low and room temperature and become positive at high temperature. As the CNT diameter decreases, the range of negative CTE shrinks. The CTE in radial direction of the CNT is less than that in the axial direction for armchair CNTs, but the opposite holds for zigzag CNTs. The radial CTE is independent of the CNT helicity, while the axial CTE shows a strong helicity dependence.

Original languageEnglish (US)
Pages (from-to)265-270
Number of pages6
JournalJournal of Engineering Materials and Technology, Transactions of the ASME
Volume126
Issue number3
DOIs
StatePublished - Jul 1 2004
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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