The Cluster publication “Multi-Photon 4D Printing of Complex Liquid Crystalline Microstructures by In Situ Alignment Using Electric Fields” from 2021 by first author Young Scientist Alexander Münchinger is among the most downloaded articles in the journal Advanced Materials Technologies. The approach presented in the paper enables the making of 3D micro-heterostructures operating under ambient conditions that show large-amplitude elastic actuation, with temperature serving as the stimulus. Also involved in this publication were Cluster PIs Carsten Rockstuhl, Eva Blasco and Martin Wegener.