Full professor at the Faculty of Applied Sciences at Delft University of Technology and head of the section Fundamental Aspects of Materials and Energy. Employing microscopic and macroscopic techniques, my main research interest is in materials for renewable energy and energy saving (MCE, Li-ion batteries, H storage, solar cells, self-healing materials, catalysts). In this work in-situ, neutron scattering, X-ray diffraction, positron annihilation and Mössbauer spectroscopy play an important role.

My major scientific effort and scholarly contribution of the past 20 years is to establish magnetocaloric material as a new, sustainability-oriented discipline. I am recognized as leading expert in this field. Before being appointed in Delft I worked as Postdoc at Stanford, University of Amsterdam and Federal University of Santa Catharina (Brazil).

Overall, I have published more than 480 papers with more than 14600 citations (ISI); generated 14 patents. My h-index is 46. I am the editor of the Handbook of Magnetic Materials, co-editor for 3 journals, co-organized the Intermag Conference in Amsterdam and initiated the recurring Delft Days on Magnetocalorics.