Oddly Satisfying Metamaterials

Full story: www.purdue.edu/newsroom/relea...
When you press the dimpled circles on a fountain drink lid, they become either convex or concave. This demonstrates bistability: materials or structures that have two stable states. Prof. Andres Arrieta has demonstrated a patterned sheet of these domes that forms an energy-storing skin, strong enough to perform mechanical tasks, and even programmable to store and process data like a mechanical computer.
Read the paper: doi.org/10.1002/advs.202001955
Programmable Structures Lab: engineering.purdue.edu/Progra...
Mechanical Engineering: purdue.edu/ME