Predicted Effects of Confinement on the Melting Transition in Krypton-Argon Adlayers
نویسنده
چکیده
We report the results of (N,ρ,T) Molecular-Dynamics computer simulations of krypton-argon mixtures physisorbed between two graphite sheets. Three novel aspects of the system's behavior emerge from this study. To begin with, new high-temperature commensurate solid phases for both argon and krypton as a result of confinement are predicted, as well as a family of confinement-induced solid-liquid phase transitions. In addition, we observe that the melting temperature of the system can be adjusted within a given range by the graphite sheet spacing. Finally, in the case of argon-krypton mixtures, certain temperatures and sheet spacings result in almost complete impurity extraction.
منابع مشابه
Simulated behavior of krypton/argon mixtures confined between two graphite slabs: new terrain for familiar systems
We present the results of ðN ; q; T Þ molecular-dynamics simulations of krypton/argon mixtures confined between two graphite slabs with varying spacing. Structural, thermodynamic and bond-orientational quantities indicate a group of new phases and phase transitions for these already well-explored systems, and they also further delineate the close cooperation of vertical atomic motion and meltin...
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