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Van der Waals pressure and its effect on trapped interlayer molecules

Author

Listed:
  • K. S. Vasu

    (School of Physics and Astronomy, University of Manchester)

  • E. Prestat

    (School of Materials, University of Manchester)

  • J. Abraham

    (School of Physics and Astronomy, University of Manchester)

  • J. Dix

    (School of Chemical Engineering and Analytical Science, University of Manchester)

  • R. J. Kashtiban

    (University of Warwick)

  • J. Beheshtian

    (Shahid Rajaee Teacher Training University)

  • J. Sloan

    (University of Warwick)

  • P. Carbone

    (School of Chemical Engineering and Analytical Science, University of Manchester)

  • M. Neek-Amal

    (Shahid Rajaee Teacher Training University)

  • S. J. Haigh

    (School of Materials, University of Manchester)

  • A. K. Geim

    (School of Physics and Astronomy, University of Manchester)

  • R. R. Nair

    (School of Physics and Astronomy, University of Manchester)

Abstract

Van der Waals assembly of two-dimensional crystals continue attract intense interest due to the prospect of designing novel materials with on-demand properties. One of the unique features of this technology is the possibility of trapping molecules between two-dimensional crystals. The trapped molecules are predicted to experience pressures as high as 1 GPa. Here we report measurements of this interfacial pressure by capturing pressure-sensitive molecules and studying their structural and conformational changes. Pressures of 1.2±0.3 GPa are found using Raman spectrometry for molecular layers of 1-nm in thickness. We further show that this pressure can induce chemical reactions, and several trapped salts are found to react with water at room temperature, leading to two-dimensional crystals of the corresponding oxides. This pressure and its effect should be taken into account in studies of van der Waals heterostructures and can also be exploited to modify materials confined at the atomic interfaces.

Suggested Citation

  • K. S. Vasu & E. Prestat & J. Abraham & J. Dix & R. J. Kashtiban & J. Beheshtian & J. Sloan & P. Carbone & M. Neek-Amal & S. J. Haigh & A. K. Geim & R. R. Nair, 2016. "Van der Waals pressure and its effect on trapped interlayer molecules," Nature Communications, Nature, vol. 7(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12168
    DOI: 10.1038/ncomms12168
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    Cited by:

    1. Hae Yeon Lee & Soumya Sarkar & Kate Reidy & Abinash Kumar & Julian Klein & Kenji Watanabe & Takashi Taniguchi & James M. LeBeau & Frances M. Ross & Silvija Gradečak, 2022. "Strong and Localized Luminescence from Interface Bubbles Between Stacked hBN Multilayers," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Cheng Hu & Jiajun Chen & Xianliang Zhou & Yufeng Xie & Xinyue Huang & Zhenghan Wu & Saiqun Ma & Zhichun Zhang & Kunqi Xu & Neng Wan & Yueheng Zhang & Qi Liang & Zhiwen Shi, 2024. "Collapse of carbon nanotubes due to local high-pressure from van der Waals encapsulation," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    3. Tingting Yin & Hejin Yan & Ibrahim Abdelwahab & Yulia Lekina & Xujie Lü & Wenge Yang & Handong Sun & Kai Leng & Yongqing Cai & Ze Xiang Shen & Kian Ping Loh, 2023. "Pressure driven rotational isomerism in 2D hybrid perovskites," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    4. Yung-Chang Lin & Rika Matsumoto & Qiunan Liu & Pablo Solís-Fernández & Ming-Deng Siao & Po-Wen Chiu & Hiroki Ago & Kazu Suenaga, 2024. "Alkali metal bilayer intercalation in graphene," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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