2015
DOI: 10.1209/0295-5075/109/46002
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Enhanced wavelength-dependent surface tension of liquid-vapour interfaces

Abstract: Due to the simultaneous presence of bulk-like and interfacial fluctuations the understanding of the structure of liquid-vapour interfaces poses a long-lasting and ongoing challenge for experiments, theory, and simulations. We provide a new analysis of this topic by combining high-quality simulation data for Lennard-Jones fluids with an unambiguous definition of the wavenumber-dependent surface tension γ(q) based on the two-point correlation function of the fluid. Upon raising the temperature, γ(q) develops a m… Show more

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Cited by 55 publications
(76 citation statements)
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“…On the side of effective theories, the characterization of order parameter correlations in presence of phase separation is especially pursued in momentum space (see [21][22][23] and references therein), focusing on the interface structure factor…”
Section: Jhep11(2016)119mentioning
confidence: 99%
See 1 more Smart Citation
“…On the side of effective theories, the characterization of order parameter correlations in presence of phase separation is especially pursued in momentum space (see [21][22][23] and references therein), focusing on the interface structure factor…”
Section: Jhep11(2016)119mentioning
confidence: 99%
“…Let us consider the function f (θ 1 , θ 2 )θ r 13 θ s 32 with f (θ 1 , θ 2 ) = θ For simplicity we can examine case (a) corresponding to r, s 1. We have 23) due to the Dirac delta functions. We reach the same conclusions even when we have a single delta function, corresponding to cases (b) and (c).…”
Section: Jhep11(2016)119mentioning
confidence: 99%
“…In this paper, we show that these conceptual issues may be overcome or avoided by determining directly S(z; q) using microscopic theory. It turns out that the problems of explaining the simulation data for S(q), and of defining a rigidity and determining its sign, do not lie with DFT but rather in trying to marry DFT with the extended Capillary-Wave expression (7). For wavevectors larger than the inverse bulk correlation lengths, which must be accessed in order to expose the corrections to the Goldstone mode term in S(z; q), one also encounters the microscopic structure of the interfacial region and thus the different bulk properties of the liquid and gas phases.…”
Section: Figmentioning
confidence: 99%
“…The software minimizes disk usage by the in situ evaluation of thermodynamic observables and dynamic correlation functions and by writing structured, compressed, and portable H5MD output files [59]. Concerning the performance of the package, it has been shown to reliably reproduce the slow glassy dynamics of the Kob-Andersen mixture [50], and it was used recently to shed new light on the structure of liquid-vapor interfaces [60].…”
Section: Molecular Dynamics Simulationmentioning
confidence: 99%