Highly compressed two-dimensional form of water at ambient conditions

Sarp Kaya, Daniel Schlesinger, Susumu Yamamoto, John T. Newberg, Hendrik Bluhm, Hirohito Ogasawara, Tom Kendelewicz, Gordon E. Brown, Lars G.M. Pettersson, Anders Nilsson

研究成果: Article査読

25 被引用数 (Scopus)


The structure of thin-film water on a BaF 2 (111) surface under ambient conditions was studied using X-ray absorption spectroscopy from ambient to supercooled temperatures at relative humidity up to 95%. No hexagonal ice-like structure was observed in spite of the expected templating effect of the lattice-matched (111) surface. The oxygen K-edge X-ray absorption spectrum of liquid thin-film water on BaF 2 exhibits, at all temperatures, a strong resemblance to that of high-density phases for which the observed spectroscopic features correlate linearly with the density. Surprisingly, the highly compressed, high-density thin-film liquid water is found to be stable from ambient (300 K) to supercooled (259 K) temperatures, although a lower-density liquid would be expected at supercooled conditions. Molecular dynamics simulations indicate that the first layer water on BaF 2 (111) is indeed in a unique local structure that resembles high-density water, with a strongly collapsed second coordination shell.

ジャーナルScientific reports
出版ステータスPublished - 2013

ASJC Scopus subject areas

  • General

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