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Calculation of a solid/liquid surface tension: A methodological study
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DOI：10.1063/1.5008473.png)
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The surface tension of a model solid/liquid interface constituted of a graphene sheet surrounded by liquid methane has been computed using molecular dynamics in the Kirkwood-Buff formalism. We show that contrary to the fluid/fluid case, the solid/liquid case can lead to different structurations of the first fluid layer, leading to significantly different values of surface tension. Therefore we present a statistical approach that consists in running a series of molecular simulations of similar systems with different initial conditions, leading to a distribution of surface tensions from which an average value and uncertainty can be extracted. Our results suggest that these distributions converge as the system size increases. Besides we show that surface tension is not particularly sensitive to the choice of the potential energy cutoff and that long-range corrections can be neglected contrary to what we observed in the liquid/vapour interfaces. We have not observed the previously reported commensurability effect. Published by AIP Publishing.
Keyword:
MOLECULAR-DYNAMICS SIMULATION
CONTACT-ANGLE
INTERFACES
LIQUIDS
SCIENCE
WATER
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3.1
论文数:
7.2W
被引数:
23.2W
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