Issue |
Europhys. Lett.
Volume 71, Number 1, July 2005
|
|
---|---|---|
Page(s) | 91 - 97 | |
Section | Condensed matter: structural, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2004-10529-2 | |
Published online | 27 May 2005 |
Experimental evidence of a liquid-liquid transition in interfacial water
1
Laboratoire Léon Brillouin (CEA-CNRS), CEA Saclay 91191 Gif/Yvette cedex, France
2
Intense Pulsed Neutron Source, Argonne National Laboratory Argonne, IL 60439, USA
3
Department of Nuclear Engineering, 24-209, MIT Cambridge, MA 02139, USA
Corresponding author: jmzanotti@cea.fr
Received:
5
October
2004
Accepted:
2
May
2005
At ambient pressure, bulk liquid water shows an anomalous increase
of thermodynamic quantities and apparent divergences of dynamic
properties on approaching a temperature of
228
. At normal pressure, supercooled water spontaneously
freezes below the homogeneous nucleation temperature,
. Upon heating, the two forms of Amorphous
Solid Water (ASW), LDA (Low Density Amorphous Ice) and HDA (High
Density Amorphous Ice), crystallise above
.
As a consequence, up to now no experiment has been able to
explore the properties of liquid water in this very interesting
temperature range between 150 and 235
. We present
nanosecond-time-scale measurements of local rotational and
translational dynamics of interfacial, non-crystalline, water
from 77 to 280
. These experimental dynamic results are
combined with calorimetric and diffraction data to show that after
exhibiting a glass transition at 165
, interfacial water
experiences a first-order liquid-liquid transition at 240
from a low-density to a high-density liquid. This is the first
direct evidence of the existence of a liquid-liquid transition
involving water.
PACS: 64.70.Ja – Liquid-liquid transitions / 61.25.Em – Molecular liquids / 61.12.Ex – Neutron scattering (including small-angle scattering)
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.