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Microwave purification of large-area horizontally aligned arrays of single-walled carbon nanotubes

Author

Listed:
  • Xu Xie

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • Sung Hun Jin

    (Incheon National University)

  • Muhammad A. Wahab

    (School of Electrical and Computer Engineering, Purdue University)

  • Ahmad E. Islam

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • Chenxi Zhang

    (University of Miami)

  • Frank Du

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • Eric Seabron

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • Tianjian Lu

    (University of Illinois at Urbana-Champaign)

  • Simon N. Dunham

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • Hou In Cheong

    (University of Illinois at Urbana-Champaign)

  • Yen-Chu Tu

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • Zhilin Guo

    (University of Illinois at Urbana-Champaign)

  • Ha Uk Chung

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • Yuhang Li

    (Northwestern University)

  • Yuhao Liu

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • Jong-Ho Lee

    (Seoul National University)

  • Jizhou Song

    (Zhejiang University)

  • Yonggang Huang

    (Northwestern University)

  • Muhammad A. Alam

    (School of Electrical and Computer Engineering, Purdue University)

  • William L. Wilson

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

  • John A. Rogers

    (Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign)

Abstract

Recent progress in the field of single-walled carbon nanotubes (SWNTs) significantly enhances the potential for practical use of this remarkable class of material in advanced electronic and sensor devices. One of the most daunting challenges is in creating large-area, perfectly aligned arrays of purely semiconducting SWNTs (s-SWNTs). Here we introduce a simple, scalable, large-area scheme that achieves this goal through microwave irradiation of aligned SWNTs grown on quartz substrates. Microstrip dipole antennas of low work-function metals concentrate the microwaves and selectively couple them into only the metallic SWNTs (m-SWNTs). The result allows for complete removal of all m-SWNTs, as revealed through systematic experimental and computational studies of the process. As one demonstration of the effectiveness, implementing this method on large arrays consisting of ~20,000 SWNTs completely removes all of the m-SWNTs (~7,000) to yield a purity of s-SWNTs that corresponds, quantitatively, to at least to 99.9925% and likely significantly higher.

Suggested Citation

  • Xu Xie & Sung Hun Jin & Muhammad A. Wahab & Ahmad E. Islam & Chenxi Zhang & Frank Du & Eric Seabron & Tianjian Lu & Simon N. Dunham & Hou In Cheong & Yen-Chu Tu & Zhilin Guo & Ha Uk Chung & Yuhang Li , 2014. "Microwave purification of large-area horizontally aligned arrays of single-walled carbon nanotubes," Nature Communications, Nature, vol. 5(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6332
    DOI: 10.1038/ncomms6332
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