Magnetorheological fluid is a type of smart fluid that changes its viscosity in response to a magnetic field. When exposed to a magnetic field, the particles within the fluid align and form structures, making the fluid behave like a solid. This property allows it to be used in various applications, such as in automotive suspensions and robotics. These fluids are composed of a base liquid, usually oil or water, mixed with tiny magnetic particles. The ability to switch between liquid and solid states quickly makes magnetorheological fluids valuable in technologies that require precise control, such as clutches and dampers.