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Showing 1–9 of 9 results
Advanced filters: Author: Livia E. Bove Clear advanced filters

  • Freezing water containing salts is believed to produce pure ice and a salt hydrate. Neutron-diffraction measurements of the ice phase obtained by recrystallizing the glassy state of LiCl salt solution at high pressure suggests something different. The data reveal an ‘alloyed’ ice VII structure incorporating Li and Cl ions.

    • Stefan Klotz
    • Livia E. Bove
    • Antonino M. Saitta
    Research
    Nature Materials
    Volume: 8, P: 405-409

  • Quasi-elastic neutron scattering measurements show the existence of a body-centred cubic structure, similar to that of ice VII, where water molecules exhibit picosecond rotational dynamic and rapid orientational jumps characteristic of liquid water.

    • Maria Rescigno
    • Alberto Toffano
    • Livia Eleonora Bove
    ResearchOpen Access
    Nature
    Volume: 640, P: 662-667

  • Methane dynamics at the interface of ice clathrate structures is expected to play a role in phenomena ranging from gas exchange to methane mobility in planetary cryospheres. Here, the authors observe extremely fast methane diffusion at the interface of the two most common clathrate hydrate structures.

    • Umbertoluca Ranieri
    • Michael Marek Koza
    • Livia E. Bove
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-7

  • Methane is abundant in the Universe, is an important energy carrier and a model system for fundamental studies. Here, the authors measure the self-diffusion coefficient of supercritical methane at ambient temperature up to the freezing pressure, and find a different behavior than expected based on previous models.

    • Umbertoluca Ranieri
    • Stefan Klotz
    • Livia E. Bove
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • Within the phase diagram of pure substances, the supercritical state is not fully understood. Here the authors experimentally observe a gas-like to liquid-like crossover in the self-dynamics of supercritical fluid methane upon pressure increase.

    • Umbertoluca Ranieri
    • Ferdinando Formisano
    • Livia E. Bove
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-10

  • Solid ammonium fluoride has fascinating structural similarities with water ice, despite its ionic character. Here, the authors investigate NH4F at room temperature and high pressure, and report a new tetragonal phase formed through displacive transition of fluorine ions and subsequent rotation of ammonium ions in ‘antiferromagnetic’ units at ~115 GPa, which is unlike any form of ice.

    • Umbertoluca Ranieri
    • Christophe Bellin
    • Livia E. Bove
    ResearchOpen Access
    Communications Chemistry
    Volume: 7, P: 1-8