Structure–property relations of three-dimensional nanoporous template-based graphene foams

Recently, much attention has been directed to 3D graphene structures due their potential of retaining intrinsic 2D properties, in combination with structural flexibility and tunable porosity. From a theoretical point view, however, it is challenging build foam that accurately represent experimental topological configurations. Here, we generate open-cell closely reflect template-based manufacturing techniques investigate mechanical properties. We use all-atom molecular dynamics simulations relate the overall stiffness, collapse stress fracture properties underlying microstructure represented by relative density, template density number layers. do so for four different morphologies: gyroids, regular (BCC), random nanoporous gold. The as function are analyzed terms power law relations probe microstructural deformation modes. Our results show feature bending dominant mode, foams having highest stiffness strength lowest. For gyroids found higher leads reduced but improved ductility. A similar trend was observed when layers increased: enhanced ductility at expense strength. Interestingly, low strong self-stiffening response, leading improvements both well findings can be used guideline design innovate lightweight strongly