Effect of dispersion forces on the capillary-wave fluctuations of liquid surfaces

Enrique Chacón, Eva M. Fernández, and Pedro Tarazona
Phys. Rev. E 89, 042406 – Published 15 April 2014
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Abstract

We present molecular dynamics evidence for the nonanalytic effects of the long-range dispersion forces on the capillary waves fluctuations of a Lennard-Jones liquid surface. The results of the intrinsic sampling method, for the analysis of the instantaneous interfacial shape, are obtained in large systems for several cut-off distances of the potential tail, and they show good agreement with the theoretical prediction by Napiórkowski and Dietrich, based on a density functional analysis. The enhancement of the capillary waves is quantified to be within 1% for a simple liquid near its triple point.

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  • Received 9 July 2013
  • Revised 22 January 2014

DOI:https://doi.org/10.1103/PhysRevE.89.042406

©2014 American Physical Society

Authors & Affiliations

Enrique Chacón1,3,*, Eva M. Fernández1,2,†, and Pedro Tarazona3,4,‡

  • 1Instituto de Ciencia de Materiales de Madrid, CSIC, 28049 Madrid, Spain
  • 2Departamento de Física Fundamental, Universidad Nacional de Educación a Distancia, 28080 Madrid, Spain
  • 3Instituto de Ciencia de Materiales Nicolás Cabrera
  • 4Departamento de Física Teórica de la Materia Condensada, Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain

  • *echacon@icmm.csic.es
  • emfernandez@fisfun.uned.es
  • pedro.tarazona@uam.es

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Issue

Vol. 89, Iss. 4 — April 2014

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