Ferro Fluid [2011]
Material Study, 2006. Paint and ferrofluid filmed live on HD Video. Perry Hall, US.
Ferrofluids are composed of nanoscale particles (diameter usually 10 nanometers or less) of magnetite, hematite or some other compound containing iron. This is small enough for thermal agitation to disperse them evenly within a carrier fluid, and for them to contribute to the overall magnetic response of the fluid.