First ever observation of Brazil nut effect for colloidal particles

Experimental and theoretical physicists at Utrecht University have observed an unexpected phenomenon in mixtures of colloidal particles: the Brazil nut effect. The discovery is important for knowledge about matter, including colloids, polymers, liquid crystals and surfactants. But developers of paints and inks, and completely different disciplines, such as geology, will also benefit from understanding this phenomenon. The study recently appeared in the scientific journal PNAS. Read more about it here.