Interplay between freezing and density anomaly in a confined core-softened system

2019/10/25 by Yu. D. Fomin, Fomin, Yu. D., V. N. Ryzhov +3
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Hydrocarbon exploration and reservoir analysis #Material Dynamics and Properties #NMR spectroscopy and applications #Soft Condensed Matter (cond-mat.soft)

paper · pdf · doi:10.48550/arxiv.1910.11584

openalex publication_date 2019/10/25 · openalex created_date 2019/11/01 · openalex updated_date 2026/07/28

Abstract

We present a computer simulation study of influence of the confinement on the density anomaly in the system with isotropic core-softened potential which is used for a qualitative description of the anomalous behavior of water and some other liquids. We have found that a maximum temperature of the density anomaly region along an isochor ρ=0.5 does not depend on the pore width. We have shown that a decrease in the width of the confining slit pore leads to an increase in the crystallization temperature and as a result the local density distribution is mostly controlled by the particle-wall interaction, which leads to the depression of the density anomaly.

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