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From nanohole to ultralong straight nanochannel fabrication in graphene oxide with swift heavy ions

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  • Andrzej Olejniczak

    (Nicolaus Copernicus University
    Joint Institute for Nuclear Research)

  • Ruslan A. Rymzhanov

    (Joint Institute for Nuclear Research
    Institute of Nuclear Physics)

Abstract

Porous architectures based on graphene oxide with precisely tailored nm-sized pores are attractive for biofluidic applications such as molecular sieving, DNA sequencing, and recognition-based sensing. However, the existing pore fabrication methods are complex, suffer from insufficient control over the pore density and uniformity, or are not scalable to large areas. Notably, creating vertical pores in multilayer films appears to be particularly difficult. Here, we show that uniform 6–7 nm-sized holes and straight, vertical nanochannels can be formed by simply irradiating graphene oxide (GO) films with high-energy heavy ions. Long penetration depths of energetic ions in combination with localized energy deposition and effective self-etching processes enable the creation of through pores even in 10 µm-thick GO films. This fully scalable fabrication provides a promising possibility for obtaining innovative GO track membranes.

Suggested Citation

  • Andrzej Olejniczak & Ruslan A. Rymzhanov, 2023. "From nanohole to ultralong straight nanochannel fabrication in graphene oxide with swift heavy ions," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36357-8
    DOI: 10.1038/s41467-023-36357-8
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    References listed on IDEAS

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    1. Muchun Liu & Paula J. Weston & Robert H. Hurt, 2021. "Controlling nanochannel orientation and dimensions in graphene-based nanofluidic membranes," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    2. Li-Chiang Lin & Jeffrey C. Grossman, 2015. "Atomistic understandings of reduced graphene oxide as an ultrathin-film nanoporous membrane for separations," Nature Communications, Nature, vol. 6(1), pages 1-7, November.
    3. Félix Mouhat & François-Xavier Coudert & Marie-Laure Bocquet, 2020. "Structure and chemistry of graphene oxide in liquid water from first principles," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    4. Pengfei Wang & Mao Wang & Feng Liu & Siyuan Ding & Xue Wang & Guanghua Du & Jie Liu & Pavel Apel & Patrick Kluth & Christina Trautmann & Yugang Wang, 2018. "Ultrafast ion sieving using nanoporous polymeric membranes," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
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