The electron and light microscopy service unit of the School of Mathematics and Sciences of the Carl von Ossietzky University Oldenburg. It is affiliated to the Ultrafast Nanoscale Dynamics working group of Prof.  Sascha Schäfer (Experimental and Applied Physics, Department of Physics) and actually operates a Hitachi S3200N scanning electron microscope (SEM) and two transmission electron microscopes (TEMs), a Zeiss EM900N and a Jeol2100F.