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Unwrapping Core–Shell Nanowires into Nanoribbon-Based Superstructures

Authors

  • Alexander Pevzner,

    1. School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel)
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    • These authors contributed equally to this work.

  • Guy Davidi,

    1. School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel)
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    • These authors contributed equally to this work.

  • Hagit Peretz-Soroka,

    1. School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel)
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  • Ehud Havivi,

    1. School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel)
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  • Dr. Zahava Barkay,

    1. Wolfson Applied Materials Research Center, Tel Aviv University, Tel Aviv 69978 (Israel)
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  • Dr. Ronit Popovitz-Biro,

    1. Electron Microscopy Unit, Weizmann Institute of Science, Rehovot (Israel)
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  • Dr. Artium Khatchtourints,

    1. The Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv 69978 (Israel)
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  • Prof. Fernando Patolsky

    Corresponding author
    1. School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel)
    2. The Center for Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv 69978 (Israel)
    • School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel)

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  • We thank the Legacy Foundation for financial support.

Abstract

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A prize for the ribbons: High-quality crystalline semiconducting nanoribbons can be prepared by “unwrapping” core–shell nanowire precursors. For example, Ge nanowires were coated with a Si shell and the top surface was carved by etching whereas the sides were protected by a thin layer of photoresist material. Finally the Ge core was removed selectively by chemical means to give fully opened and flat nanoribbon structures (see picture).

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