Ján Kruželák is an Associate Professor at the Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology. His research focuses on the development and characterization of advanced elastomer materials, with a particular emphasis on functional composites, hybrid filler systems, and magnetically active materials. He specializes in investigating complex chemical and physical interactions within polymer matrices using advanced spectroscopic and microscopic techniques. His current research activities are centered on the design of smart rubber composites for electromagnetic radiation shielding and the multi-scale characterization of high-performance polymer systems using non-destructive photonic diagnostic methods. Dr. Kruželák has authored numerous scientific publications and is actively involved in international research projects dedicated to polymer science, material engineering, and the development of innovative materials for technical applications.