Walid Baaziz has been a research engineer since 2018 in the Surfaces and Interfaces Department (DSI) at the Institut de Physique et Chimie des Matériaux de Strasbourg (PCMS). He obtained his PhD degree from the University of Strasbourg in 2011 for studies on the synthesis of iron–cobalt-based nanoparticles using a thermal decomposition method for biomedical applications. Between 2012 and 2015, he carried out his first postdoctoral position at the Institut de chimie et procédés pour l’énergie, l’environnement et la santé (ICPEES) on the interaction of metal/oxide NPs with carbon nanostructures, and on the synthesis and the evaluation of the catalytic performances of new catalysts for dehydrogenation/hydrodesulfurization of heavy oils. In 2016, he joined the 3D-TEM team of IPCMS and worked on the characterization of nanomaterials using advanced transmission electron microscopy (TEM) techniques, especially electron tomography and operando, E-TEM. His actual research topics are the development of new concepts and analysis methodologies in TEM for solving, at the nanometer scale, the 3D structural and chemical properties of nanomaterials and their dynamical changes in gaseous atmospheres. He has provided results of excellent quality for several research and industrial projects and he is the author of more than 80 publications. He is a member of the platforms committee of the French network METSA, the French Society of Microscopies (SFu) and the European Microscopy Society (EMS).