On the Resolution Limit of Electrohydrodynamic Redox 3D Printing (Small 46/2024)

Additive Manufacturing In article number 2402067, Ralph Spolenak, and co-workers present breakthroughs in electrohydrodynamic redox 3D printing for fabricating high-purity copper (over 98%) with adjustable voxel sizes from 6 μm to 50 nm. By controlling solvent evaporation, they either trigger or prevent Coulomb explosions, enabling the creation of 50 nm-wide nanopillars or large-area spray deposits. The high materials quality and resolution allow direct manufacturing of atom probe tomography tips.