The research activities within Prof. Markus Clemens group are centered on the development and application of numerical simulation methods for Computational Electromagnetics and Computational Multiphysics. Related research projects have a focus in numerical high performance computation schemes for complex models of electric power transport and power conversion systems as well as for high-frequency applications up to the terahertz range. This also includes numerical electromagnetic compatibility testing methods and realistic simulations of electromagnetic field exposure scenarios of biological organisms e.g. by THz biosensors.

Recent research projects in the THz regime involve the development and application of numerical simulation methods for the analysis of electrically large systems (i.e., were the device length is very much larger minimum wave length) as e.g. THz sensor arrays. This includes techniques such as ultra large scale FDTD field simulations (up to 16 billion grid cells, using the BUW multi-GPU/CPU high-performance compute-server), advanced domain decomposition methods and novel surrogate models based e.g. on conventional model order reduction techniques as well as deep neuronal networks.

• M. Saviz, L. Mogouon Toko, O. Spathmann, J. Streckert, V. Hansen, M. Clemens, R. Faraji-Dana, "A New Open-Source Toolbox for Estimating the Electrical Properties of Biological Tissues in the Terahertz Frequency Band," Journal of Infrared, Millimeter, and Terahertz Waves, No. 34, pp. 529-538, Juli 2013. (DOI: 10.1007/s10762-013-9997-z)

• M. Saviz, O. Spathmann, J. Streckert, V. Hansen, M. Clemens, R. Faraji-Dana, "Theoretical Estimations of Safety Thresholds for Terahertz Exposure of Surface Tissues," IEEE Transactions on Terahertz Science and Technology, Vol. 3, No. 5, pp. 635-640, 10. September 2013. (DOI: 10.1109/TTHZ.2013.2264327)

• O. Spathmann, M. Saviz, J. Streckert, M. Zang, V. Hansen, M. Clemens, "Numerical Verification of the Applicability of the Effective Medium Theory with Respect to Dielectric Material Properties," IEEE Transactions on Magnetics, vol. 51, no. 3, March 2015
  (DOI: 10.1109/TMAG.2014.2361958)

• O. Spathmann, M. Zang, J. Streckert, V. Hansen, M. Saviz, K. Statnikov, U. Pfeiffer, M. Clemens, "Numerical Computation of Temperature Elevation in Human Skin due to Electromagnetic Exposure in the THz Frequency Range," IEEE Transactions on Terahertz Science and Technology, Vol. 5, No. 6, pp. 978 – 989, November 2015.
  (DOI: 10.1109/TTHZ.2015.2476962)

• O. Spathmann, R. Schuermann, M. Zang, J. Streckert, V. Hansen, M. Saviz, M. Clemens, "Thermal Impact on the Human Oral Cavity Exposed to Radiation from Biomedical Devices Operating in the THz Frequency Range," Journal of Infrared, Millimeter, and Terahertz Waves, June 2018.
  (DOI: 10.1007/s10762-018-0511-5)