What Are Ferrofluids?

A ferrofluid is a metallic liquid that becomes magnetized when placed in a magnetic field. Ferrofluids are made up of clumps of iron nanoparticles that are evenly placed throughout a carrier fluid such as water or organic solvent. These clumps all work together to create a response to a magnetic field, consequently creating a very strong magnetic bond. Ferrofluids should not be confused with magnetorheological fluids, which solidify when exposed to a magnetic field. How a Ferrofluid Works Fe

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