Zeolitic ice ITT (left) and aeroice 4xFAU (right) are illustrated. Their structure can be regarded as combinations of a couple of polyhedral building blocks. In molecular scale, each polygonal face of the polyhedra is made of water molecules (left bottom). Yellow lines are hydrogen bonds. Credit: Masakazu Matsumoto/CC BY 2.0
Researchers from Japan have discovered a new form of ice crystal from theoretical modeling of its formation under negative pressure. Not much is known about the effects of extreme negative pressure on water molecules. Exploring a significant region of negative pressure through molecular dynamic simulations, researchers have now theoretically discovered a new family of ice phases. Called aeroices, these ices have the lowest density of all known ice crystals.
“Our resear...
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