Polarization behaviors of twisted carbon nanotube fibers

Jinyuan Zhou, Gengzhi Sun, Zhaoyao Zhan, Jianing An, Lianxi Zheng, Yongzhe Zhang, Yani Zhang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Polarization behaviors of carbon nanotube (CNT) fibers with different twisting were reported. Scanning electron microscope and polarized Raman spectroscopy were used to investigate the prepared samples. Results indicate that surface twisting angle affects greatly the polarization angle and I///I-ratio of twisted CNT fibers. Raman depth profile measurements imply that the twisted fibers consist of non-uniform CNT alignments. A simplified two-CNT-alignment geometric model was proposed to illuminate the experimental observations. The results suggest that polarized Raman depth profile measurement would be a very useful approach for determining the distribution of CNT alignments in CNT fibers.

Original languageEnglish
Pages (from-to)1221-1226
Number of pages6
JournalJournal of Raman Spectroscopy
Volume43
Issue number9
DOIs
StatePublished - Sep 2012
Externally publishedYes

Keywords

  • Alignment
  • Carbon nanotube fiber
  • Depth profile
  • Polarized Raman
  • Surface twisting angle

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