  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.
