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Frédéric Caupin

Institute of Light and Matter, Université Claude Bernard Lyon 1

Friday, May 22nd, 2015 at 11:30:00 AM

Conference Room Querzoli LENS

Enrico Fermi Colloquium

Published on-line at 04:04:46 PM on Friday, May 15th, 2015

Measuring metastable water: stretched, supercooled, and both

Ice floats on water. Liquid water expands upon cooling below 4°C. These (and many other) anomalies arise from the hydrogen bonds between the H2O molecules.

ABSTRACT

Ice floats on water. Liquid water expands upon cooling below 4°C. These (and many other) anomalies arise  from the hydrogen bonds between the H2O molecules. They form a complex network, even more developed when the liquid is supercooled below its equilibrium freezing point. Simulations of supercooled water have suggested the intriguing possibility of a phase separation between two distinct liquid phases, but experimental evidence remains elusive.

In my talk, I will review our experimental work devoted to measuring properties of bulk metastable liquid water, supercooled and even stretched to negative pressures. 
Specifically, I will describe how we have obtained the equation of state of water down to -120 MPa, and its viscosity down to -34°C.