| Author(s) |
Peter Serles, Jinwook Yeo, Michel J.R Hache, Pedro Guerra Demingos, Jonathan Kong, Pascal Kiefer, Somayajulu Dhulipala, Boran Kumral, Katherine Jia, Shuo Yang, Tianjie Feng, Charles Jia, Carlos M. Portela, Martin Wegener, Pulickel M. Ajayan, Jane Howe, Chandra Veer Singh, Yu Zou, Seunghwa Ryu, Tobin Filleter |
| Abstract Scope |
Nanoarchitected materials are at the frontier of metamaterial design and have set the benchmark for mechanical performance in several contemporary applications. However, traditional nanoarchitected designs with conventional topologies exhibit poor stress distributions and induce premature nodal failure. Here, using multi-objective Bayesian optimization with two-photon polymerization, we create optimized carbon nanolattices with exceptional specific strength at low densities. Generative design optimization provides experimental improvements in yield strength at equivalent densities, and reduction of nanolattice strut diameters produce a unique high-strength pyrolysis-induced atomic gradient with high sp2 aromatic carbon and low oxygen impurities. Using multi-focus multi-photon polymerization, we demonstrate millimeter-scalable metamaterials consisting of ~18-million lattice unit cells with nanometer dimensions. Collectively, the optimized nanostructures exhibit the strength of structural steel at the density of Styrofoam offering unparalleled capabilities in light-weighting, fuel reduction, and contemporary design applications. |