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Single-Crystal Silicon Nanotubes, Hollow Nanocones, and Branched Nanotube Networks
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    Single-Crystal Silicon Nanotubes, Hollow Nanocones, and Branched Nanotube Networks
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    ACS Nano

    Cite this: ACS Nano 2024, 18, 4, 3775–3782
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    https://doi.org/10.1021/acsnano.3c11841
    Published January 16, 2024
    Copyright © 2024 American Chemical Society
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    Abstract

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    We report a general approach for the synthesis of single-crystal silicon nanotubes, involving epitaxial deposition of silicon shells on germanium nanowire templates followed by removal of the germanium template by selective wet etching. By exploiting advances in the synthesis of germanium nanowires, we were able to rationally tune the nanotube internal diameters (5–80 nm), wall thicknesses (3–12 nm), and taper angles (0–9°) and additionally demonstrated branched silicon nanotube networks. Field effect transistors fabricated from p-type nanotubes exhibited a strong gate effect, and fluid transport experiments demonstrated that small molecules could be electrophoretically driven through the nanotubes. These results demonstrate the suitability of silicon nanotubes for the design of nanoelectrofluidic devices.

    Copyright © 2024 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsnano.3c11841.

    • Nanofluidic transport through Si nanotube (MP4)

    • Figures: Ge/Si interface, branch angle distributions (PDF)

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    ACS Nano

    Cite this: ACS Nano 2024, 18, 4, 3775–3782
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsnano.3c11841
    Published January 16, 2024
    Copyright © 2024 American Chemical Society
    Request reuse permissions

    Article Views

    1845

    Altmetric

    10

    Citations

    8
    Learn about these metrics

    Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.

    Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.

    The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated.

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