Jan 7 – 12, 2018
ETH Zürich, centre
Europe/Zurich timezone

Exploring new phenomena in ice, salty ice, and ice clathrates under extreme conditions

Jan 8, 2018, 10:05 AM
45m
NO Building, Room C 60 (ETH Zürich, centre)

NO Building, Room C 60

ETH Zürich, centre

Sonneggstrasse 5 8092 Zürich
keynote

Speaker

Mrs Livia Eleonora Bove (CNRS & Université P&M Curie, EPFL)

Description

Compressed water is overspread on Earth at depth and in the extra-terrestrial space, both interstellar and on outer planets and moons (ice bodies) [1]. Under the conditions experienced in these celestial bodies water displays an incredibly rich phase diagram, including seventeen known crystalline phases and three amorphous states, and predicted exotic properties like plasticity [2], ionization [3], and superionicity [4]. In this talk I will review some of our recent experimental results on pure ice, salty (LiCl, LiBr, NaCl) ices, and ice (H2, CH4) clathrates under extreme conditions including: new dynamical effects in ice VII [5], salty ice crystallization under high pressure [6,7], hydrogen bond symmetrisation in salt-doped ices at Mbar pressures [8,9], methane ultra fast diffusion and locking in methane hydrates [10,11]. [1] De Pater, I., and Lissauer, J.J. Planetary Sciences, Cambridge University Press (2004). [2] Aragones, L., and Vega, C., J. Chem. Phys. 130, 244504 (2009). [3] Wang, Y., Liu, H., et al. Nat. Comm. 563 1566 (2011). [4] Cavazzoni, C., et al., Science 283, 44-46 (1999). [5] Polidori A., Ranieri U., et al., under submission. [6] Klotz, S., Bove, L. E. et al. Nat. Mat. 8, 405 (2009) [7] Klotz, S., Bove, L. E. et al., Nat. Sci. Rep. 6, 32040 (2016). [8] Bove, L. E. , Gaal, R. et al., PNAS 112, 8216 (2015); [9] Bronstein, Y., et al. , Phys. Rev. B 93 024104 (2016). [10] Ranieri, U.L., et al.., Nat. Com., in press (2017). [11] Schaack, S., Ranieri, U.L., submitted (2017)

Significance statement

The behaviour of high pressure ice phases, either pure or ion and gas filled is of paramount importance for the description of the interior of ice bodies in our universe and gives deeper insights on both quantum effects and hydrophobic/hydrophilic interactions in ice.

Primary author

Mrs Livia Eleonora Bove (CNRS & Université P&M Curie, EPFL)

Co-authors

Mr Andrzej Falenty (Goettingen University) Mr Marek M. Koza (ILL) Mr Stefan Klotz (CNRS & Université P&M Curie) Mr Umberto Luca Ranieri (ILL & EPFL) Prof. Werner F Kuhs (University of Göttingen) Mrs annalisa polidori (EPFL)

Presentation materials

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