Mechanism of Oobleck - Non-Newtonian Fluid

[SgrA*]

Hi,

What is the molecular-level mechanism of shear-thickening of oobleck (cornstarch-water paste)?

 

[Borek]

I don't think there is a molecular level mechanism - I am under impression it is an effect of the interaction of starch grains, which are composed of many polymer molecules.

But I can be wrong.