WFRF:(Yang Jae Kyung)
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Liquid-liquid phase separation in supercooled water from ultrafast heating of low-density amorphous ice
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- Amann-Winkel, Katrin (författare)
- Stockholms universitet,Fysikum,Max Planck Institute for Polymer Research and Johannes Gutenberg University, Germany,Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden.;Johannes Gutenberg Univ Mainz, Max Planck Inst Polymer Res, D-55128 Mainz, Germany.
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- Kim, Kyung Hwan (författare)
- POSTECH, Dept Chem, Pohang 37673, South Korea.
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- Giovambattista, Nicolas (författare)
- CUNY Brooklyn Coll, Dept Phys, Brooklyn, NY 11210 USA.;CUNY, Grad Ctr, New York, NY 10016 USA.
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- (creator_code:org_t)
- 2023-01-27
- 2023
- Engelska.
- Ingår i: Nature Communications. - : Springer Nature. - 2041-1723. ; 14:1
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Recent experiments continue to find evidence for a liquid-liquid phase transition (LLPT) in supercooled water, which would unify our understanding of the anomalous properties of liquid water and amorphous ice. These experiments are challenging because the proposed LLPT occurs under extreme metastable conditions where the liquid freezes to a crystal on a very short time scale. Here, we analyze models for the LLPT to show that coexistence of distinct high-density and low-density liquid phases may be observed by subjecting low-density amorphous (LDA) ice to ultrafast heating. We then describe experiments in which we heat LDA ice to near the predicted critical point of the LLPT by an ultrafast infrared laser pulse, following which we measure the structure factor using femtosecond x-ray laser pulses. Consistent with our predictions, we observe a LLPT occurring on a time scale < 100 ns and widely separated from ice formation, which begins at times >1 mu s. Obtaining experimental evidence of a liquid-liquid phase transition in supercooled water is challenging due to the rapid crystallization. Here the authors drive low-density amorphous ice to the conditions of liquid-liquid coexistence using ultrafast laser heating and observe the liquid-liquid phase transition with femtosecond x-ray laser pulses.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- Kim, Kyung Hwan
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- Perakis, Fivos
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- Pathak, Harshad
- Yang, Cheolhee
- Eklund, Tobias
- Lane, Thomas J.
- You, Seonju
- Jeong, Sangmin
- Lee, Jae Hyuk
- Eom, Intae
- Kim, Minseok
- Park, Jaeku
- Chun, Sae Hwan
- Poole, Peter H.
- Nilsson, Anders
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