Adsorption trajectories and free-energy separatrices for colloidal particles in contact with a liquid-liquid interface

Joost de Graaf*, Marjolein Dijkstra, Rene van Roij

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We apply the recently developed triangular tessellation technique as presented by J. de Graaf et al. [Phys. Rev. E 80, 051405 (2009)] to calculate the free energy associated with the adsorption of anisotropic colloidal particles at a flat interface. From the free-energy landscape, we analyze the adsorption process, using a simplified version of Langevin dynamics. The present result is a first step towards understanding the time-dependent behavior of colloids near interfaces. This study shows a wide range of adsorption trajectories, where the emphasis lies on a strong dependence of the dynamics on the orientation of the colloid at initial contact with the interface. We believe that the observed orientational dependence in our simple model can be recovered in suitable experimental systems. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3389481]

Original languageEnglish
Article number164902
Number of pages14
JournalThe Journal of Chemical Physics
Volume132
Issue number16
DOIs
Publication statusPublished - 28 Apr 2010

Keywords

  • WATER SURFACTANT SYSTEMS
  • ELLIPSOIDAL PARTICLES
  • FLUID INTERFACES
  • TENSION MINIMA
  • AEROSOL OT
  • AIR-WATER
  • TRANSITIONS
  • STABILITY
  • BEHAVIOR
  • ROTATION

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