Raman spectroscopic study of the effect of strain on the radial breathing modes of carbon nanotubes in epoxy/SWNT composites

M. Lucas, Robert J. Young

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In this report, the radial breathing modes (RBMs) intensities of single-walled carbon nanotubes (SWNTs) have been investigated by Raman spectroscopy. Epoxy composite samples with 0.025 wt% SWNT were subjected to deformation using four-point bending tests over a range of strain between -0.6% and 0.6%. Despite the low concentration of nanotubes, a strong Raman signal was observed with a near-infrared laser (wavelength of 785 nm). The RBM intensity values were found to depend on strain and also on the nanotube structure. Large intensity variations of between 30% and 100% were observed depending on the nanotube structure. The origin of this phenomenon has been discussed. © 2004 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)2297-2302
    Number of pages5
    JournalComposites Science and Technology
    Volume64
    Issue number15
    DOIs
    Publication statusPublished - Nov 2004

    Keywords

    • A. Polymer-matrix composites
    • C. Deformation
    • D. Raman spectroscopy
    • Nanotubes

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