Dilatant Fluids
Dilatant, or shear-thickening fluids increase in apparent viscosity at higher shear rates. They are rarely encountered, but one common example is an uncooked paste of cornstarch and water. Under high shear the water is squeezed out from between the starch molecules, which are able to interact more strongly.
While not strictly a dilatant fluid, Silly Putty is an example of a material that shares these viscosity characteristics. Another use is in a viscous coupling in which if both ends of the coupling are spinning at the same (rotational) speed, the fluid viscosity is minimal, but if the ends of the coupling differ greatly in speed, the coupling fluid becomes very viscous. Such couplings have applications as a lightweight, passive mechanism for a passenger automobile to automatically switch from two-wheel drive to four-wheel drive such as when the vehicle is stuck in snow and the primary driven axle starts to spin due to loss of traction under one or both tires.
Read more about this topic: Power-law Fluid