This resulted in supremely stiff and strong composites, which are now extremely damage resilient as well.

Reference

Grossman M, Pivovarov D, Bouville F, Dransfeld C, Masania K, Studart AR. Hierarchical toughening of nacre‐like composites. Advanced Functional Materials, 08 January 2019, doi: 10.1002/adfm.201806800