Ferrofluid is a liquid that is attracted to the poles of a magnet. It is a colloidal liquid made of nanoscale ferromagnetic or ferrimagnetic particles suspended in a carrier fluid (usually an organic solvent or water).

These particles freely move within the liquid under normal conditions, exhibiting the characteristics of a typical fluid. However, in the presence of a magnetic field, these particles quickly align into chain-like structures, significantly increasing the fluid's viscosity and potentially making it behave like a near-solid. This unique attribute broadens the scope of ferrofluids' applications.

The Ferrofluid Nano-tech Group (FNG) is an organization focused on the development, standardization, and licensing of ferrofluid technology. Ferrofluid is a magnetic liquid composed of nanoscale magnetic particles. Under the influence of a magnetic field, these particles can exhibit various unique shapes and behaviors. The application of this technology spans a wide range, from electronic products to art exhibitions.

The uniqueness of ferrofluid technology lies in its ability to respond to changes in magnetic fields, thereby altering its shape or position. This characteristic offers potential applications in numerous fields. For example, in audio equipment, ferrofluid can be used to enhance the performance of speakers; in the automotive industry, it can be utilized to manufacture more efficient sensors and actuators; in the realm of art, the unique visual effects of ferrofluid make it a compelling material for creating captivating artworks.