Dependence of the liquid-vapor surface tension on the range of interaction: a test of the law of corresponding states

Abstract

The planar surface tension of coexisting liquid and vapor phases of a fluid of Lennard-Jones atoms is studied as a function of the range of the potential using both Monte Carlo simulations and Density Functional Theory. The interaction range is varied from $r_c^{\ast }=2.5$ to $r_c^{\ast }=6$ and the surface tension is determined for temperatures ranging from $T^{\ast }=0.7$ up to the critical temperature in each case. The results are shown to be consistent with previous studies. The simulation data are well-described by Guggenheim's law of corresponding states but the agreement of the theoretical results depends on the quality of the bulk equation of state.

13 pages, 5 figures

References in corpus (3)

• Calculation of surface tension via area sampling
• On the corresponding states law of the Yukawa fluid
• Density Functional Theory of Inhomogeneous Liquids: II. A Fundamental Measure Approach

Cited by in corpus (1)

• Density Functional Theory of Inhomogeneous Liquids IV. Squared-gradient approximation and Classical Nucleation Theory