Equilibrium Orientation and Adsorption of an Ellipsoidal Janus Particle at a Fluid–Fluid Interface

Florian Günther, Qingguang Xie, Jens Harting (Corresponding author)

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1 Citation (Scopus)

Abstract

We investigate the equilibrium orientation and adsorption process of a single, ellipsoidal Janus particle at a fluid–fluid interface. The particle surface comprises equally sized parts that are hydrophobic or hydrophilic. We present free energy models to predict the equilibrium orientation and compare the theoretical predictions with lattice Boltzmann simulations. We find that the deformation of the fluid interface strongly influences the equilibrium orientation of the Janus ellipsoid. The adsorption process of the Janus ellipsoid can lead to different final orientations determined by the interplay of particle aspect ratio and particle wettablity contrast.
Keywords: Janus particles; colloids at interfaces; lattice Boltzmann simulations
Original languageEnglish
Article number55
Number of pages15
JournalColloids and Interfaces
Volume4
Issue number4
DOIs
Publication statusPublished - Dec 2020

Keywords

  • Colloids at interfaces
  • Janus particles
  • Lattice Boltzmann simulations

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