Mg3N2-Ga: Nanoscale Semiconductor–Liquid Metal Heterojunctions inside Graphitic Carbon Nanotubes

Authors

  • J. Q. Hu,

    1. International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044 (Japan)
    2. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials, Science and Engineering, East China University of Science and Technology (ECUST), Shanghai 200237 (P. R. China)
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  • Y. Bando,

    1. International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044 (Japan)
    2. Nanoscale Materials Center, National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • J. H. Zhan,

    1. Nanoscale Materials Center, National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • C. Z. Li,

    1. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials, Science and Engineering, East China University of Science and Technology (ECUST), Shanghai 200237 (P. R. China)
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  • D. Golberg

    1. Nanoscale Materials Center, National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • This work was performed through the Special Coordination Funds for Promoting Science and Technology from the Ministry of Education, Culture, Sport, Science, and Technology of the Japanese Government, Program for Specially Appointed Professor by East China University of Science and Technology, the National Natural Science Foundation of China (Grant 20236020), and the Major Basic Research Project of Shanghai (China) (Grant 04DZ14002). The authors thank Mr. T. Sasaki for TEM technical support.

Abstract

original image

Mg3N2-Ga nanoscale semiconductor–liquid metal heterojunctions homogeneously coated with very thin graphitic carbon nanotube (GCNT) layers are fabricated (see figure). Most of the junctions have a uniform diameter of ca. 100–200 nm. GCNTs coated on the nanowire junctions are only several nanometers thick. A convergent electron beam generated in a transmission electron microscope is demonstrated to be an effective tool for delicate manipulation of a junction.

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