Researchers say they've cooked up the elusive form of ice using crushing pressure and lasers.
Researchers press ice between two diamonds and heat it up with a laser to create exotic phases of ice.The ice in our freezers usually comes in one form, with its water molecules arranged hexagonally—which is why snowflakes always have six points. But up to 20 different variations of ice exist in nature, depending on the surrounding pressure and temperature. A type of ice called ice VII has been foundpurged from Earth’s mantle, for example.
A water molecule is made up of two hydrogen atoms and one oxygen atom. Each water molecule is strongly attracted to its neighbor. This intermolecular attraction can space out water particles in many ways and influence where each hydrogen sits between the two oxygen atoms. This conformation of the atoms dictates the phase of the ice.
Grande and colleagues claim to have manifested ice X at the lowest pressure yet, deducing its presence from the oxygen atoms’ vibrations. The researchers crushed ice between two diamonds and periodically heated the solid with a laser in a method they call “cook and look.” The laser melted the jumbled crystals, allowing the ice to recrystallize into a different atomic configuration.
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