In a new Cluster publication, first author Cluster Alumnus Maximilian Bojanowski together with Young Scientists Vincent Hahn, Pascal Rietz, Tobias Messer, Julian Brückel and PIs Christopher Barner-Kowolloik, Eva Blasco, Stefan Bräse and Martin Wegener systematically explores alternatives to the few already reported one- and two-color two-step-absorption photoinitiators for 3D laser nanoprinting. The aspect of their work they find most interesting regarding future possibilities is that rotationally locked diketones open the door to depletable two-step absorption initiators. On this basis, inexpensive and compact setups based on continuous-wave lasers come into reach that systematically break the optical diffraction barrier in 3D laser printing.
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