Non-Newtoian Fluids
A non-Newtonian fluid is a fluid with properties that differ in any way from those of Newtonian fluids. Most commonly, the viscosity the measure of a fluid's ability to resist gradual deformation by shear or tensile stresses of non-Newtonian fluids is dependent on shear rate or shear rate history.
This can be used in shocked pistions which is in cars and other things.