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Ice-VII-like molecular structure of ambient water nanomeniscus

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  • Dongha Shin

    (Seoul National University)

  • Jonggeun Hwang

    (Seoul National University)

  • Wonho Jhe

    (Seoul National University)

Abstract

Structural transformations originating from diverse rearrangements of the hydrogen bonding in water create various phases. Although most phases have been well investigated down to the molecular level, the molecular structure of the nanomeniscus, a ubiquitous form of nanoscale water in nature, still remains unexplored. Here, we demonstrate that the water nanomeniscus exhibits the stable, ice-VII-like molecular structure in ambient condition. Surface-enhanced Raman spectroscopy on trace amounts of water, confined in inter-nanoparticle gaps, shows a narrowed tetrahedral peak at 3340 cm-1 in the OH-stretching band as well as a lattice-vibrational mode at 230 cm-1. In particular, the ice-VII-like characteristics are evidenced by the spectral independence with respect to temperature variations and differing surface types including the material, size and shape of nanoparticles. Our results provide un unambiguous identification of the molecular structure of nanoconfined water, which is useful for understanding the molecular aspects of water in various nanoscale, including biological, environments.

Suggested Citation

  • Dongha Shin & Jonggeun Hwang & Wonho Jhe, 2019. "Ice-VII-like molecular structure of ambient water nanomeniscus," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08292-0
    DOI: 10.1038/s41467-019-08292-0
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    Cited by:

    1. Bo Lin & Jian Jiang & Xiao Cheng Zeng & Lei Li, 2023. "Temperature-pressure phase diagram of confined monolayer water/ice at first-principles accuracy with a machine-learning force field," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Yi Wang & Weinan Zhao & Yebin Lee & Yuning Li & Zuankai Wang & Kam Chiu Tam, 2024. "Thermo-adaptive interfacial solar evaporation enhanced by dynamic water gating," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    3. Darjan Podbevšek & Yeojin Jung & Maheen K. Khan & Honghui Yu & Raymond S. Tu & Xi Chen, 2024. "The role of water mobility on water-responsive actuation of silk," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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