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Optical visualization of individual ultralong carbon nanotubes by chemical vapour deposition of titanium dioxide nanoparticles

Author

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  • Rufan Zhang

    (Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Tsinghua University)

  • Yingying Zhang

    (Center for Nano and Micro Mechanics, Tsinghua University)

  • Qiang Zhang

    (Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Tsinghua University)

  • Huanhuan Xie

    (Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Tsinghua University
    Center for Nano and Micro Mechanics, Tsinghua University)

  • Haidong Wang

    (Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, School of Aerospace, Tsinghua University)

  • Jingqi Nie

    (Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Tsinghua University)

  • Qian Wen

    (Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Tsinghua University)

  • Fei Wei

    (Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Tsinghua University)

Abstract

Direct visualization and manipulation of individual carbon nanotubes in ambient conditions is of great significance for their characterizations and applications. However, the observation of individual carbon nanotubes usually requires electron microscopes under high vacuum. Optical microscopes are much more convenient to be used, yet their resolution is low. Here we realize the visualization and manipulation of individual ultralong carbon nanotubes under optical microscopes by deposition of TiO2 nanoparticles on them. The strong scattering of TiO2 nanoparticles to visible light renders them visible by optical microscopes. Micro-Raman-spectroscopy measurement of individual carbon nanotubes is greatly facilitated by their optical visualization. With the assistance of TiO2 nanoparticles, individual carbon nanotubes can be easily manipulated under an optical microscope at macroscopic scale and in ambient conditions. Based on our approach, various manipulation of ultralong carbon nanotubes, including cutting, transfer, fabrication of structures/devices and pulling out inner shells of multiwalled carbon nanotubes, are demonstrated.

Suggested Citation

  • Rufan Zhang & Yingying Zhang & Qiang Zhang & Huanhuan Xie & Haidong Wang & Jingqi Nie & Qian Wen & Fei Wei, 2013. "Optical visualization of individual ultralong carbon nanotubes by chemical vapour deposition of titanium dioxide nanoparticles," Nature Communications, Nature, vol. 4(1), pages 1-7, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2736
    DOI: 10.1038/ncomms2736
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