When you add water to cornstarch, the mix is soft and can be stirred easily.
However, when you hit the surface fast, the mixture gets strong and acts like a solid.
But if I lift the spoon out and then stab the mixture, the spoon doesnt go back in.
Its like stabbing a hard surface.
However, flexible polymers often break if theyre hit repeatedly.
Then, they were ready to test the materials mechanical properties.
Whats more, scientists reported that the faster the impacts, the more stretchy and tough the film became.
The study highlights the applicability of the lightweight durable material outside of the lab.