SMRTR TechOct 14, 2025TechEBlog

Water’s new trick is freezing at room temperature

SMRTR summary

Scientists discovered a new form of ice called ice XXI that forms at room temperature (25°C) when water is compressed to 20,000 times atmospheric pressure using diamond anvils and ultra-fast X-ray imaging. This breakthrough reveals that water can freeze through five different pathways under extreme conditions, with ice XXI being a dense, temporary crystal structure that challenges our understanding of how water behaves under pressure.

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