Electrorheological fluid
= Electrorheological fluid
{wiki=Electrorheological_fluid}
Electrorheological (ER) fluids are a type of smart fluid whose rheological (flow) properties can be dramatically altered by the application of an electric field. Typically, these fluids consist of fine particles suspended in a carrier liquid. When an electric field is applied, the particles within the fluid polarize and form structures or chains, significantly increasing the viscosity of the fluid.