Berlin 2012 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 22: Posters I

DY 22.6: Poster

Mittwoch, 28. März 2012, 17:00–19:00, Poster A

Understanding water and water mixtures by phenomenological considerations — •Lotta Heckmann and Barbara Drossel — Institut für Festkörperphysik, TU Darmstadt, Germany

Understanding the behavior of water and water mixtures is of large relevance for biological systems. For this reason, the properties of bulk water, especially its phase behavior and its anomalies, have been subject of investigation until today. One approach to gain further insight into the special characteristics of water is the use of very simplified models that do not represent specific molecular properties, but rather aim to match general properties of water. We follow the spirit of Ben-Naim (2009) and investigate a 1D-model consisting of point masses and simple interaction potentials for which we analyze conditions under which a phase behaviour similar to that of water is observed. Since the model contains only very few parameters, we can thereby understand in more detail which ingredients are indispensable for a model that describes correctly the phase behaviour of water. Our long-term objective is to analyze the phase behaviour of water and water mixtures in confinement, for which we also perform molecular dynamics simulations.