Self-assembly of ellipsoidal particles at fluid-fluid interfaces with an empirical pair potential.

摘要: Colloidal particles adsorbed at fluid-fluid interfaces interact via mechanisms that can be specific to the presence of interfaces, for instance, lateral capillary interactions induced by nonspherical particles. Capillary are highly relevant self-assembly and formation surface microstructures, however, these very challenging model due multibody nature interactions. This work pursues a direct comparison between our computational modelling approach experimental results on microstructures formed ellipsoidal We begin investigating accuracy using pairwise describe interaction contrasting exact two- three-particle energies we find approximation appears reasonable experimentally configurations studied. then develop an empirical pair potential use it in Monte-Carlo type simulations efficiently structure process particle properties such as aspect ratio, contact angle coverage, succeed reproducing observations where spread sterically-stabilised onto oil-air interface high coverage. At lower coverages, falls into diffusion-limited colloid aggregation universality class.