Unveiling the Mysteries of Ice XXI: A New Phase Revealed by Extreme-Pressure Experiments
In a groundbreaking experiment, scientists from the Korea Research Institute of Standards and Science (KRISS) have discovered a new phase of ice, named Ice XXI, under extreme pressure conditions. This achievement marks a significant milestone in the field of ice research, offering insights into the behavior of water under high-pressure environments and potentially leading to the creation of novel materials.
The Experiment: Unlocking the Secrets of High-Pressure Ice
KRISS researchers, led by Dr. Lee Ho Seong, employed a dynamic diamond anvil cell (dDAC) to create a supercompressed liquid state of water. This state allowed water to remain liquid at room temperature while being subjected to pressures exceeding 2 gigapascals (GPa), more than twice the pressure typically required for crystallization. The dDAC, developed at KRISS, minimizes mechanical disturbances, enabling precise control over pressure changes in microscopic water samples.
Collaborative Efforts and Observations
In collaboration with international partners, including the European XFEL, scientists monitored the crystallization of supercompressed water with microsecond precision. These observations revealed complex crystallization pathways at room temperature, leading to the identification of Ice XXI, the 21st crystalline form of ice. The research team, comprising 33 scientists from various countries, also determined the detailed structure of Ice XXI, showcasing an unusually large and intricate unit cell.
Impact and Future Directions
This discovery has profound implications for high-pressure physics and planetary science. Dr. Lee Geun Woo highlights the potential connection between Ice XXI's density and high-pressure ice layers in Jupiter and Saturn's icy moons, offering new insights into the origins of life under extreme conditions in space. The research, supported by the National Research Council of Science & Technology, was published in Nature Materials, emphasizing the importance of continued exploration in ultrahigh-pressure environments to unlock further scientific breakthroughs.
