Foto de stock - 24 November 2020, Brandenburg, Potsdam: Vladimir Roddatis, senior scientist at the Geoforschungszentrum (GFZ), is standing at the new transmission electron microscope (TEM). The TEM was put into operation on the same day. With such a microscope smallest structures in the atomic range can be made visible and examined. It is based on an electron beam that passes through a sample. The samples must be extremely thin for this purpose. The total investment for the TEM was around 3.3 million euros. The microscope will be used to examine wafer-thin layers of rock, metals and biomaterials. The samples come from meteorites or microbes, from tiny inclusions in diamonds, from plankton from the ocean or from biominerals. Photo: Patrick Pleul/dpa-Zentralbild/ZB. - Potsdam/Brandenburg/Germany