The Thiel Research Group is involved with several research areas all of which are centered around the interaction of energetic electrons with matter. When electrons with kinetic energy in the range of 10 0 to 10 5 eV interact with either gaseous or condensed matter, they couple strongly with the valence and core electrons of the target substance. Some of our efforts are directed towards new developments in scanning electron microscopy (SEM) and other characterization methods, while others explore the possibility for using electron beams for additive manufacturing and nanoscale patterning. In all cases, we combine fundamental measurements with engineering design and computer simulation.