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Femtosecond laser modification of an array of vertically aligned carbon nanotubes intercalated with Fe phase nanoparticles
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  • 作者:Vladimir Labunov (12)
    Alena Prudnikava (12)
    Serguei Bushuk (13)
    Serguei Filatov (14)
    Boris Shulitski (12)
    Beng Kang Tay (15)
    Yury Shaman (16)
    Alexander Basaev (16)
  • 关键词:Femtosecond laser ablation ; Carbon nanotube array ; Iron phase nanosphere ; Chemical vapor deposition ; 61.48.De ; 06.60.Jn ; 42.62.Cf
  • 刊名:Nanoscale Research Letters
  • 出版年:2013
  • 出版时间:December 2013
  • 年:2013
  • 卷:8
  • 期:1
  • 全文大小:1094KB
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  • 作者单位:Vladimir Labunov (12)
    Alena Prudnikava (12)
    Serguei Bushuk (13)
    Serguei Filatov (14)
    Boris Shulitski (12)
    Beng Kang Tay (15)
    Yury Shaman (16)
    Alexander Basaev (16)

    12. Laboratory of Integrated Micro- and Nanosystems, Belarusian State University of Informatics and Radioelectronics, P. Brovka St. 6, Minsk, 220013, Republic of Belarus
    13. Laboratory of Optical Diagnostics, B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus, Minsk, 220072, Republic of Belarus
    14. Laboratory of Hydrogen Energy, Institute of Heat and Mass Transfer of the National Academy of Sciences of Belarus, Minsk, 220072, Belarus
    15. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
    16. Scientific-Manufacturing Complex Technological Centre MIET, K-498, Moscow, 103498, Russia
  • ISSN:1556-276X
文摘
Femtosecond lasers (FSL) are playing an increasingly important role in materials research, characterization, and modification. Due to an extremely short pulse width, interactions of FSL irradiation with solid surfaces attract special interest, and a number of unusual phenomena resulted in the formation of new materials are expected. Here, we report on a new nanostructure observed after the interaction of FSL irradiation with arrays of vertically aligned carbon nanotubes (CNTs) intercalated with iron phase catalyst nanoparticles. It was revealed that the FSL laser ablation transforms the topmost layer of CNT array into iron phase nanospheres (40 to 680 nm in diameter) located at the tip of the CNT bundles of conical shape. Besides, the smaller nanospheres (10 to 30 nm in diameter) are found to be beaded at the sides of these bundles. Some of the larger nanospheres are encapsulated into carbon shells, which sometime are found to contain CNTs. The mechanism of creation of such nanostructures is proposed.

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