  Graphene kirigami (patterned cuts) can be an effective way to improve some of
the graphene mechanical and electronic properties. In this work, we report the
first study of the mechanical and ballistic behavior of single and multilayered
graphene pyramid kirigami (GKP). We have carriedout fully atomistic reactive
molecular dynamics simulations. GPK presents a unique kinetic energy absorption
due to its topology that creates multi-steps dissipation mechanisms, which
block crack propagation. Our results show that even having significantly less
mass, GKP can outperform graphene structures with similar dimensions in terms
of absorbing kinetic energy.
