Volume 109, Number 4, February 2015
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||24 February 2015|
Enhanced wavelength-dependent surface tension of liquid-vapour interfaces
Max-Planck-Institut für Intelligente Systeme - Heisenbergstraße 3, 70569 Stuttgart, Germany, and IV. Institut für Theoretische Physik, Universität Stuttgart - Pfaffenwaldring 57, 70569 Stuttgart, Germany
Received: 1 December 2014
Accepted: 2 February 2015
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 wave-number–dependent surface tension based on the two-point correlation function of the fluid. Upon raising the temperature, develops a maximum at short wavelengths. We compare these results with predictions from density functional theory. Our analysis has repercussions for the interpretation of grazing-incidence small-angle X-ray scattering (GISAXS) at liquid interfaces.
PACS: 68.03.Hj – Liquid surface structure: measurements and simulations / 61.20.Ja – Computer simulation of liquid structure / 05.10.-a – Computational methods in statistical physics and nonlinear dynamics
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.