First author Young Scientist Britta Weidinger presents new self-assembled printable materials based on a novel ink, enabling precise control of the nanostructure in 3D in a new Cluster publication. The ink developed by the researchers of Heidelberg University and KIT is suitable for high-resolution two-photon 3D printing and based on self-assembled block copolymers containing photo-cross-linkable groups. The authors including PIs Petra Tegeder, Rasmus Schröder and Eva Blasco expect their versatile approach to create new avenues for the precise design of functional polymer materials suitable for high-resolution 3D printing exhibiting tailor-made nanostructures.