Prof. Dr. Marc Aßmann
Department of Physics
Otto-Hahn-Str. 4a
44227 Dortmund
Room: CP-01-180
E-Mail: marc.assmann@tu-dortmund.de
Tel.: +49 (0)231 755-8818

Secretariat
"My research group deals with issues in experimental solid state physics. Our main interest lies in the field of optical spectroscopy, i.e., the development and application of complex experimental methods with the goal of being able to efficiently investigate or manipulate semiconductor structures. Depending on the problem, we can achieve time resolutions in the femtosecond range, spectral resolutions in the range of a few nanoelectronvolts or data acquisition rates in the range of several gigabytes per second.
This methodological approach opens up a wide range of research topics for us, ranging from spin-based quantum technologies and quantum optics to the use of ultrashort sound waves for switching processes in tailored semiconductor materials and optical investigations of wear phenomena of materials for mechanical engineering."



![3D visualisation of human neuronal tissue reconstructed by multi-scale X-ray phase contrast tomography. Neuronal cell nuclei are shown in yellow for the granule neurons in the dentate gyrus region of the hippocampus. Blood vessels are shown in red. By changing the X-ray optical magnification in the multi-scale recordings, one can zoom into regions-of-interest (red ovals). In these scans the resolution is high enough to resolve sub-structures of the nucleus, associated with different DNA packing regimes. Adapted from [6]](/storages/physik/_processed_/e/4/csm_Kolloquium_Salditt_0e30a3f090.png)




