Sachiko Kodama, a Japanese physicist and artist worked on a ferrofluid art project that she named “Protrude, Flow”. The dynamic movement of liquids is the theme of this project.
A ferrofluid is a liquid which becomes strongly magnetized in the presence of a magnetic field.
Be sure to also check out her video with ferrofluids in action..more than a little mind-boggling.
Then also check out these candlesticks that are made with a ferrofluid/resin mix.