Experimental observation of the liquid-liquid transition in bulk supercooled water under pressure

被引：188

作者：

Kim, Kyung Hwan ^{[1
,2
]}

Amann-Winkel, Katrin ^{[1
]}

Giovambattista, Nicolas ^{[3
,4
]}

Spah, Alexander ^{[1
]}

Perakis, Fivos ^{[1
]}

Pathak, Harshad ^{[1
]}

Parada, Marjorie Ladd ^{[1
]}

Yang, Cheolhee ^{[2
]}

Mariedahl, Daniel ^{[1
]}

Eklund, Tobias ^{[1
]}

Lane, Thomas J. ^{[5
,6
]}

You, Seonju ^{[2
]}

Jeong, Sangmin ^{[2
]}

Weston, Matthew ^{[1
]}

Lee, Jae Hyuk ^{[7
]}

Eom, Intae ^{[7
]}

Kim, Minseok ^{[7
]}

Park, Jaeku ^{[7
]}

Chun, Sae Hwan ^{[7
]}

Poole, Peter H. ^{[8
]}

Nilsson, Anders ^{[1
]}

机构：

[1] Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden

[2] Pohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South Korea

[3] CUNY Brooklyn Coll, Dept Phys, Brooklyn, NY 11210 USA

[4] CUNY, PhD Programs Chem & Phys, Grad Ctr, New York, NY 10016 USA

[5] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[6] DESY, Notkestr 85, D-22607 Hamburg, Germany

[7] Pohang Accelerator Lab, Pohang 37673, Gyeongbuk, South Korea

[8] St Francis Xavier Univ, Dept Phys, Antigonish, NS B2G 2W5, Canada

来源：

SCIENCE | 2020年 / 370卷 / 6519期

基金：

新加坡国家研究基金会; 欧洲研究理事会;

关键词：

HIGH-DENSITY; ICE; DYNAMICS; ELECTRON; CRYSTALLIZATION; SINGULARITY; LASER;

D O I：

10.1126/science.abb9385

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：978 / +

页数：59

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