A ferrofluid (from the Latin ferrum, meaning iron) is a liquid which becomes strongly polarised in the presence of a magnetic field .Ferrofluids are composed of nanoscaleferromagnetic particles suspended in a carrierfluid, usually an organic solvent or water. The ferromagnetic nano-particles are coated with a surfactant to prevent their agglomeration (due to van der Waals and magnetic forces).[Wikipedia]
Dat je met dat soort vloeistoffen (ook wel stromende magneten genoemd) prachtige kunstobjecten kunt maken bewijst de volgende video: