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Re-entrant limits of stability of the liquid phase and the Speedy scenario in colloidal model systems

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Rovigatti, Lorenzo and Bianco, Valentino and Tavares, José María and Sciortino, Francesco (2017) Re-entrant limits of stability of the liquid phase and the Speedy scenario in colloidal model systems. Journal of chemical physics (146). 041103. ISSN 0021-9606

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Official URL: https://aip.scitation.org/doi/pdf/10.1063/1.4974830?class=pdf



Abstract

A re-entrant gas-liquid spinodal was proposed as a possible explanation of the apparent divergence of the compressibility and specific heat off supercooling water. Such a counter-intuitive possibility, e.g., a liquid that becomes unstable to gas-like fluctuations on cooling at positive pressure, has never been observed, neither in real substances nor in off-lattice simulations. More recently, such a reentrant scenario has been dismissed on the premise that the re-entrant spinodal would collide with the gas-liquid coexisting curve (binodal) in the pressure-temperature plane. Here we study, numerically and analytically, two previously introduced one-component patchy particle models that both show (i) a re-entrant limit of stability of the liquid phase and (ii) a re-entrant binodal, providing a neat in silico (and in charta) realization of such unconventional thermodynamic scenario.


Item Type:Article
Uncontrolled Keywords:water | liquids | amorphous ice
Subjects:Sciences > Physics
Sciences > Physics > Chemistry, Physical and theoretical
Sciences > Physics > Thermodynamics
Sciences > Chemistry
ID Code:55082
Deposited On:06 May 2019 13:08
Last Modified:06 May 2019 15:52

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