To be useful, materials need to maintain a constant Poisson ratio under pressure
A car that dashes against an obstacle suffers damages, first to its fenders. There is a keen interest to develop materials that can be sandwiched in the fender system which will absorb the shock and prevent the interiors from being damaged. Origami metamaterials that crumple rather than tear, and take the impact, can play an important role in such situations. Researchers from Indian Institute of Technology Madras have developed such a material, which could have many such uses.