Khosravani, A.; Morsdorf, L.; Tasan, C. C.; Kalidindi, S. R.: Multiresolution mechanical characterization of hierarchical materials: Spherical nanoindentation on martensitic Fe–Ni–C steels. Acta Materialia 153, pp. 257 - 269 (2018)
If manganese nodules can be mined in an environmentally friendly way, the critical metals needed for the energy transition could be produced with low CO2 emissions