How Electro rheostatic and magneto rheostatic function?

Electro-rheostatic fluids change their viscosity in response to an electric field, allowing them to transition from a liquid to a semi-solid state, which is useful in applications like clutches and dampers. Magneto-rheostatic fluids behave similarly but respond to a magnetic field instead; they exhibit changes in viscosity or flow characteristics when exposed to magnetic forces. Both types of fluids utilize suspended particles that align or aggregate under their respective fields, altering the fluid's mechanical properties for various engineering applications.