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Protocol for Measuring the Thermal Properties of a Supercooled Synthetic Sand-water-gas-methane Hydrate Sample
Published on: March 21, 2016
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Enhanced Grüneisen Parameter in Supercooled Water
Gabriel O Gomes1, H Eugene Stanley2, Mariano de Souza3
1University of São Paulo, Department of Astronomy, São Paulo, 05508-090, Brazil.
Scientific Reports
|August 21, 2019
Summary
Supercooled water exhibits a critical point, evidenced by the Grüneisen parameter (Γs) sensitive to thermal fluctuations. This suggests two liquid states coexist near this point.
Area of Science:
- Thermodynamics
- Condensed Matter Physics
- Physical Chemistry
Background:
- Supercooled water exhibits complex behavior, including a proposed liquid-liquid critical point.
- Understanding water's properties in the 'No-Man's Land' regime is crucial for fundamental science.
Purpose of the Study:
- To estimate the Grüneisen parameter (Γs) in supercooled water using a compressible cell Ising-like model.
- To investigate the characteristics of pressure-induced critical points in supercooled water.
Main Methods:
- Application of the compressible cell Ising-like model.
- Estimation of the Grüneisen parameter (Γs).
- Analysis of thermal fluctuations and order-parameter sensitivity.
Main Results:
- The Grüneisen parameter (Γs) shows significant sensitivity to thermal fluctuations near the critical point.
- Enhanced Γs indicates the coexistence of high- and low-density liquid states.
- Temperature dependence of compressibility, sound velocity, and pseudo-Grüneisen parameter (Γw) were reported.
Conclusions:
- Findings support the existence of a liquid-liquid critical point in supercooled water.
- The compressible cell Ising-like model is applicable to systems with critical phenomena.
- The model shows potential for describing Ising-like nematic phases in Fe-based superconductors.
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