Experimental observation of the liquid-liquid transition in bulk supercooled water under pressure
SCIE
SCOPUS
- Title
- Experimental observation of the liquid-liquid transition in bulk supercooled water under pressure
- Authors
- KIM, KYUNG HWAN; Katrin Amann-Winkel; Nicolas Giovambattista; Alexander Späh; Fivos Perakis; Harshad Pathak; Marjorie Ladd Parada; Cheolhee Yang; Daniel Mariedahl; Tobias Eklund; Thomas. J. Lane; Seonju You; Sangmin Jeong; Matthew Weston; Jae Hyuk Lee; Intae Eom; Minseok Kim; Jaeku Park; Sae Hwan Chun; Peter H. Poole; Anders Nilsson
- Date Issued
- 2020-11-20
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Abstract
- We prepared bulk samples of supercooled liquid water under pressure by isochoric heating of high-density amorphous ice to temperatures of 205 +/- 10 kelvin, using an infrared femtosecond laser. Because the sample density is preserved during the ultrafast heating, we could estimate an initial internal pressure of 2.5 to 3.5 kilobar in the high-density liquid phase. After heating, the sample expanded rapidly, and we captured the resulting decompression process with femtosecond x-ray laser pulses at different pump-probe delay times. A discontinuous structural change occurred in which low-density liquid domains appeared and grew on time scales between 20 nanoseconds to 3 microseconds, whereas crystallization occurs on time scales of 3 to 50 microseconds. The dynamics of the two processes being separated by more than one order of magnitude provides support for a liquid-liquid transition in bulk supercooled water.
- Keywords
- HIGH-DENSITY; ICE; DYNAMICS; ELECTRON; CRYSTALLIZATION; SINGULARITY; LASER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/104643
- DOI
- 10.1126/science.abb9385
- ISSN
- 0036-8075
- Article Type
- Article
- Citation
- SCIENCE, vol. 370, no. 6519, page. 978 - +, 2020-11-20
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- There are no files associated with this item.
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