Amazing stuff!
We still do not even understand water very well! Similar, the very complex phenomenon of Earth's climate!
Keep in mind: Global warming is a hoax and climate change is a religion! It is being used as a pretext by Big Government and the elite to interfere with our lives. It is among the greatest scams and scandals of at least the last 30 years!
"... But there are in fact many more phases, some of which—predicted to exist at high temperature and pressure—are so strange they're referred to as exotic.
State-of-the-art neutron spectrometers and sample environment infrastructures at the Institut Laue-Langevin (ILL) have enabled the first experimental observation of one of these exotic phases—plastic ice VII. ...
Plastic ice VII was originally predicted more than 15 years ago by molecular dynamics (MD) simulations as a phase of water that could exist under high temperature and pressure. ..."
From the abstract:
"Water is the third most abundant molecule in the universe and a key component in the interiors of icy moons, giant planets, and Uranus- and Neptune-like exoplanets.
Owing to its distinct molecular structure and flexible hydrogen bonds that readily adapt to a wide range of pressures and temperatures, water forms numerous crystalline and amorphous phases.
Most relevant for the high pressures and temperatures of planetary interiors is ice VII, and simulations have identified along its melting curve the existence of a so-called plastic phase where individual molecules occupy fixed positions as in a solid yet are able to rotate as in a liquid.
Such plastic ice has not yet been directly observed in experiments.
Here, we present quasi-elastic neutron scattering (QENS) measurements, conducted at temperatures between 450 and 600 K and pressures up to 6 GPa, that reveal the existence of a body centered cubic (bcc) structure, as found in ice VII, with water molecules exhibiting picosecond rotational dynamics typical for liquid water. Comparison with molecular dynamics simulations indicates that this plastic ice VII does not conform to a free rotor phase but rather exhibits rapid orientational jumps, as observed in jump-rotor plastic crystals. We anticipate that our observation of plastic ice VII will impact our understanding of the geodynamics of icy planets and the differentiation processes of large icy moons."
Exotic observations at the ILL (original news release)
Figure: Experimental phase diagram of water in the investigated P-T region. The region of stability of Plastic Ice VII from numerical simulations is shown as white dashed lines, pressures and temperatures are shifted in order to match the experimental melting line. The measured thermodynamic points are represented as circles with colors corresponding to the phase attribution (previous experiments are represented as squares).
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