Magnetic Droplets Dance

A beautiful experiment showing a magnetic droplets dance. A ferrofluid droplet on a superhydrophobic surface is subjected to increasing magnetic field of a cylindrical permanent magnet, resulting in division into numerous daughter droplets.    Watch the videos…

The division form different static self-assembled patterns to minimize their total energy. In the end, the magnetic field is decreased, resulting in relaxation of the conical daughter droplets into spherical ones.