Reversible structural transition in nanoconfined ice

V. Satarifard, M. Mousaei, F. Hadadi, James Dix, M. Sobrino Fernandez, P. Carbone, J. Beheshtian, F. M. Peeters, M. Neek-Amal

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    The report on square ice sandwiched between two graphene layers by Algara-Siller et al. [Nature (London) 519, 443 (2015)NATUAS0028-083610.1038/nature14295] has generated a large interest in this system. By applying high lateral pressure on nanoconfined water, we found that monolayer ice is transformed to bilayer ice when the two graphene layers are separated by H=6,7 Å. It was also found that three layers of a denser phase of ice with smaller lattice constant are formed if we start from bilayer ice and apply a lateral pressure of about 0.7 GPa with H=8,9 Å. The lattice constant (2.5-2.6 Å) in both transitions is found to be smaller than those typical for the known phases of ice and water, i.e., 2.8 Å. We validate these results using ab initio calculations and find good agreement between ab initio O-O distance and those obtained from classical molecular dynamics simulations. The reversibility of the mentioned transitions is confirmed by decompressing the systems.

    Original languageEnglish
    Article number064105
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Issue number6
    Publication statusPublished - 15 Feb 2017


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