Muhammet Toprak is Professor of Materials Chemistry at the Department of Applied Physics, KTH Royal Institute of Technology (Stockholm, Sweden), leading the subunit of Nanochemistry. He has D.Sc. in Materials Chemistry with extensive experience and recognition on fabrication and characterization of functional nanomaterials using solution-based chemical strategies. Prof. Toprak received his M.Sc. in inorganic chemistry from METU (Ankara, Turkey), PhD from KTH and postdoctoral research at University of California at Santa Barbara (CA, USA). His research focuses on the development and use of solution-based combinatorial synthetic strategies for the fabrication of inorganic nanomaterials and nanocomposites and their applications in the field of energy, environment, and medicine. He brings together an extraordinarily wide range of complementary skills in the design, fabrication, characterization, and testing of new materials with tailor-made properties for intended applications. Among the energy related topics thermoelectric materials have been an area where his group developed nano-TEs of several compositions with improved TE figure of merit. Recent work focused on design and fabrication of nanoparticles for high resolution XRF bio-imaging. He has led many national and international collaborative projects, authored more than 200 publications (journal and peer reviewed proceedings; h-index of 41 (web of science), started two spin-off companies and has collaborations with academia and industry. Besides the research activities he is teaching several courses in the International Master Program on Nanotechnology, specialising on Nanomaterials.