![]() Ferrofluids have a lustrous spiky shape that morphs into different sizes and patterns in the presence of magnets. ![]() Just before Grand Opening, our Museum Career Ladder student Dominic got a chance to interview Josh Gill, one of the mechanical engineers at Creative Machines, about the exhibits being built, how he became a mechanical engineer, and some of the favorite things of his job. A ferrofluid is a mixture of finely grounded ferromagnets (containing iron) coated with a surfactant (prevents the magnetic particles from clumping) and mixed in an organic solvent or water. Ferrofluid in its magnetized state (here at the Thinkery in our ferrofluid machine!).įerrofluid is used in a number of ways, from protecting hard drives to providing heat conduction in speakers, to biomedical uses, but can also be seen and experienced in our electrical machine here at the Thinkery!Ī number of our installations, like the ferrofluid machine, were put together by the team at Creative Machines. Since these particles are attracted to each other, they must be coated. Store your liquid magnet away from heat and flame. A ferrofluid is a special liquid with tiny magnetic particles floating around inside. Explore the shapes you can form using a magnet and the ferrofluid. Bring a magnet close to the ferrofluid to see spikes form, following the lines of the magnetic field. Once you've found your ideal items of fluid liquid display, check out tons of other promotions across other. Use magnets to drag the ferrofluid up the sides of a container. Ferrofluid are made from material like rubber. When the magnet’s removed, it returns to it’s liquid state. Use a strong magnet to float a penny on top of the ferrofluid. When no magnet is nearby, the material acts like a liquid, but when a magnet is nearby, the particles become temporarily magnetized and the ferrofluid acts like a solid. It is made of nanoscale (aka SUPER tiny) ferrimagnetic particles and suspended in a liquid (like oil). For those who have been to the Thinkery, when you first arrived, you may have noticed a machine in the middle of Spark Shop with black goo inside and wondered “What the heck is THAT?!”.įerrofluid is a very special type of material that can act like a liquid and also a magnetic solid. A ferrofluid is composed of three components: magnetic nano particles, dispersion medium (also called carrier liquid) and a dispersant or surface active agent.
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