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Resumo(s)
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 re-entrant 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.
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Citação
ROVIGATTI, Lorenzo; [et al] – Communication: Re-entrant limits of stability of the liquid phase and the Speedy scenario in colloidal model systems. American Institute of Physics – The Journal of Chemical Physics. ISSN 0021-9606. Vol. 146, N.º 4 (2017), pp. 1-6
Editora
AIP Publishing