Belén Ballesteros is a Scientific Researcher of CSIC at ICN2 (Catalan Institute of Nanoscience and Nanotechnology), leader of the ICN2 Electron Microscopy Unit and Head of the METCAM platform at JEMCA (Joint Electron Microscopy Center at ALBA). Graduated in Chemistry from the UAB and with a PhD in Materials Science (ICMAB-CSIC), she completed her postdoctoral stage at the University of Oxford, from 2006 to 2009, where she specialized in the study and nanoanalysis of nanomaterials by advanced techniques of electron microscopy, obtaining the Certificate of Competence in Electron Microscopy. In April 2009, she joined the ICN2 (then ICN) where she leads the Electron Microscopy Unit. She has participated in several national and European projects, such as the FP7 Marie Curie ITN RADDEL project, and several transnational infrastructure access projects, such as NFFA-Pilot Europe and the ReMade@ARI. Her main research interests are focused on the use of advanced electron microscopy techniques for the study of nanomaterials, with a special focus on those for biomedical applications.