Auxetics are structures or materials that have a negative Poisson’s ratio. When stretched, they become thicker perpendicular to the applied force.
from Wikipedia’s entry on Auxetics
Is “auxetic packaging” really a thing? Most of the references I’ve found to packaging applications seem to be nano-scale. (Auxetic cushioning foams and the like.)
But there are others (artists and researchers) who are experimenting with folded paper and cardboard. And some of these models look (to me) like an intriguing new frontier in structural packaging design.
We have videos and information about two projects in particular (shown above), after the fold.