Not sure if it's related to the article but this is called superfreezing or supercooling. You can do it with distilled water at home too I believe. https://en.

Not sure if it's related to the article but this is called superfreezing or supercooling. You can do it with distilled water at home too I believe. https://en.m.wikipedia.org/wiki/Supercooling https://en.m.wikipedia.org/wiki/Supercooling