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Tip-enhanced nano-Raman analytical imaging of locally induced strain distribution in carbon nanotubes

Author

Listed:
  • Taka-aki Yano

    (Osaka University
    Present address: Department of Electronic Chemistry, Tokyo Institute of Technology, Yokohama 226-8502, Japan)

  • Taro Ichimura

    (Osaka University
    Present address: Quantitative Biology Center, RIKEN, Osaka 565-0874, Japan)

  • Shota Kuwahara

    (Osaka University
    Present address: Department of Applied Chemistry, Chuo University, Tokyo 112-8551, Japan)

  • Fekhra H’Dhili

    (Osaka University
    Present address: Department of Physics, El Manar University, Tunis 2092, Tunisia)

  • Kazumasa Uetsuki

    (Osaka University)

  • Yoshito Okuno

    (Osaka University)

  • Prabhat Verma

    (Osaka University)

  • Satoshi Kawata

    (Osaka University
    Near-field NanoPhotonics Research Team, RIKEN)

Abstract

Tip-enhanced Raman scattering microscopy is a powerful technique for analysing nanomaterials at high spatial resolution far beyond the diffraction limit of light. However, imaging of intrinsic properties of materials such as individual molecules or local structures has not yet been achieved even with a tip-enhanced Raman scattering microscope. Here we demonstrate colour-coded tip-enhanced Raman scattering imaging of strain distribution along the length of a carbon nanotube. The strain is induced by dragging the nanotube with an atomic force microscope tip. A silver-coated nanotip is employed to enhance and detect Raman scattering from specific locations of the nanotube directly under the tip apex, representing deformation of its molecular alignment because of the existence of local strain. Our technique remarkably provides an insight into localized variations of structural properties in nanomaterials, which could prove useful for a variety of applications of carbon nanotubes and other nanomaterials as functional devices and materials.

Suggested Citation

  • Taka-aki Yano & Taro Ichimura & Shota Kuwahara & Fekhra H’Dhili & Kazumasa Uetsuki & Yoshito Okuno & Prabhat Verma & Satoshi Kawata, 2013. "Tip-enhanced nano-Raman analytical imaging of locally induced strain distribution in carbon nanotubes," Nature Communications, Nature, vol. 4(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3592
    DOI: 10.1038/ncomms3592
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