After a little more than a year of research and more than 20 attempts to get the right materials, an Air Force Academy cadet and a professor at the school have developed a kind of goo that can be used to enhance existing types of body armor.

As part of a chemistry class project in 2014, Cadet 1st Class Hayley Weir was assigned epoxy, Kevlar, and carbon fiber to use to create a material that could stop a bullet.

The project grabbed Weir’s interest. “Like Under Armour, for real,” she said.

The materials reminded her of Oobleck, a non-Newtonian fluid — which thickens when force is applied — made of cornstarch and water and named after a substance from a Dr. Seuss book, and she became interested in producing a material that would stop bullets without shattering. An adviser suggested swapping in a thickening fluid for the epoxy, which hardened when it dried.