Karsten Hinrichs received his PhD in solid state physics from the TU Berlin, Germany and he holds a habilitation degree in Physical Chemistry of the TU Dresden. Since 2000 he works as researcher at the Berlin Department of the Leibniz-Institut für Analytische Wissenschaften – ISAS – e. V.. Since 2012 he is the head of the working group In situ Spectroscopy. He became a member of the Graduate School of Analytical Sciences at Humboldt University Berlin in 2012 and since 2005 he is member of the board of the German Working Group Ellipsometry (www.akepdv.de). Currently he is member of the Society for Applied Spectroscopy (SAS), American Chemical Society (ACS) and German Physical Society (DPG). Karsten Hinrichs has undertaken several research periods to Prof. S. Minko's working group at the Clarkson University and the University of Georgia, U.S.A. since 2008. He was the program chair of the 7th International Conference in Spectroscopic Ellipsometry 2016 in Berlin and is a frequent contributor of articles and book chapters for renowned international journals. His research focusses on the optical analysis of functional surfaces and thin films and the development of new infrared spectroscopic measurement strategies with polarized light. Recent work was dedicated to structure-spectra correlations of functional films at solid liquid interfaces and infrared nanopolarimetric studies of structure and anisotropy of thin films and surfaces. Klaus-Jochen Eichhorn is head of the Analytical Department within the Institute of Macromolecular Chemistry at the Leibniz Institute of Polymer Research Dresden e. V., Germany (since 2000). In 1980 he received his Diploma in Chemistry from Friedrich-Schiller-University Jena, Germany, then he moved for a PhD position to Dresden University of Technology, Institute of Physical Chemistry and Electrochemistry where he finished his PhD studies on ellipsometry of iron and steel surfaces in model atmospheres in 1985. Since then Dr. Eichhorn has been working on the field of polymer chemistry and physics, especially polymer characterization using spectroscopic methods. Actual research topics include special techniques of vibrational spectroscopy to investigate the structure of bulk polymers and polymer interfaces, hyphenated techniques, in-situ spectroscopic ellipsometry to study thin layers and (nano)structured surfaces. Polymer brushes, materials for organic electronics, for sensor and biomedical applications, but also microplastic particles from the environment are in the focus of his recent studies. Klaus-Jochen Eichhorn is member of DAAS (German Workgroup of Analytical Spectroscopy) within the German Chemical Society/ Division of Analytical Chemistry. He is board member of the German Workgroup of Ellipsometry - Paul Drude e.V. and member of the program committee of the International Conference on Spectroscopic Ellipsometry (ICSE). He organized the 14thand 20th European Symposium on Polymer Spectroscopy (ESOPS 14 and 20) in 2002 and 2016 in Dresden and is member of the ESOPS International Advisory Board.