Rounded Layering Transitions on the Surface of Ice
| Autor: | Pablo Llombart, Andrew J. Archer, David N. Sibley, Eva G. Noya, Luis G. MacDowell |
|---|---|
| Přispěvatelé: | Red Española de Supercomputación, Ministerio de Economía y Competitividad (España) |
| Rok vydání: | 2020 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Capillary wave Phase transition Materials science Statistical Mechanics (cond-mat.stat-mech) Condensed matter physics Física atmosférica Disjoining pressure FOS: Physical sciences General Physics and Astronomy Condensed Matter - Soft Condensed Matter 01 natural sciences Premelting Mean field theory Physics - Chemical Physics Metastability 0103 physical sciences Química física Soft Condensed Matter (cond-mat.soft) Cristalografía Sublimation (phase transition) Superficies (Física) Layering 010306 general physics Condensed Matter - Statistical Mechanics |
| Zdroj: | E-Prints Complutense. Archivo Institucional de la UCM instname Digital.CSIC. Repositorio Institucional del CSIC E-Prints Complutense: Archivo Institucional de la UCM Universidad Complutense de Madrid |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | 6 pags., 3 figs. Understanding the wetting properties of premelting films requires knowledge of the film's equation of state, which is not usually available. Here we calculate the disjoining pressure curve of premelting films and perform a detailed thermodynamic characterization of premelting behavior on ice. Analysis of the density profiles reveals the signature of weak layering phenomena, from one to two and from two to three water molecular layers. However, disjoining pressure curves, which closely follow expectations from a renormalized mean field liquid state theory, show that there are no layering phase transitions in the thermodynamic sense along the sublimation line. Instead, we find that transitions at mean field level are rounded due to capillary wave fluctuations. We see signatures that true first order layering transitions could arise at low temperatures, for pressures between the metastable line of water-vapor coexistence and the sublimation line. The extrapolation of the disjoining pressure curve above water-vapor saturation displays a true first order phase transition from a thin to a thick film consistent with experimental observations. We acknowledge use of the MareNostrum supercomputer and the technical support provided by Barcelona Supercomputing Center from Red Espa�ola de Supercomputaci�n (RES) under Grants No. QCM2017-2-0008 and No. QCM-2017-3-0034. We also acknowledge funding from the Spanish Agencia Estatal de Investigaci�n (AEI) and the Fondo Europeo de Desarrollo Regional (FEDER) under Grant No. FIS2017- 89361-C3-2-P(AEI/FEDER,UE). |
| Databáze: | OpenAIRE |
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