Spectroscopic study of carbon nanotubes

S. Curran, D. Wekion, W. Blau, H. Zanbergen, J. Kastner, H. Kuzmany

Research output: Contribution to journalConference articlepeer-review

Abstract

We present a comprehensive experimental study of the vibrational spectra of nanotubes. There are two main lines observed in the Raman spectrum, one positioned at 1350 cm-1, the D lire, and the other at 1580 cm-1, the G line. Both these lines are very similar to those seen with disordered graphite. The disorder induced D line is very weak compared to the G line which i indicative of high crystalline materials. The position and intensity of the D line strongly depends on the energy of the exciting laser. This dispersion effect was also observed for graphitic particles and may be explained by a photoselective resonance process of nanowbes with different sizes. There are two optically active modes in the Infrared spectrum for highly orientated polycrystalline graphite (HOPG) which are the E1u and A2u modes. The Ei mode is positioned at 1587 cm-1 while the A2u mode is positioned at 868 cm-1. The Infrared spectrum of the nanotubes shows both modes although the E1u mode is downshifted to 1575 cm-1

Original languageEnglish
Pages (from-to)33-47
Number of pages15
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2284
DOIs
Publication statusPublished - 28 Nov 1994
Externally publishedYes
EventFullerenes and Photonics 1994 - San Diego, United States
Duration: 24 Jul 199429 Jul 1994

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