Model of the Frauenkirche Dresden (IMAGE) Technische Universität Dresden Caption Automated multi-material 3D printing finer than a human hair: adding material exchange to 2-photon-direct laser writing lithography. (Model of the Frauenkirche Dresden with microscope images of printed details). Credit Dr. Robert Kirchner Usage Restrictions No License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.