1. Chimie des Interactions Plasma-Surface (ChIPS), Materials Institute, University of Mons, 23 Place du Parc, 7000 Mons, Belgium
2. Institute of Physical and Theoretical Chemistry, University of Tuebingen, 72076 Tuebingen, Germany
3. Research Group on Carbon Nanostructures (CARBONNAGe), University of Namur, 61 Rue de Bruxelles, 5000 Namur, Belgium
4. Materia Nova, 3 Avenue Copernic, 7000 Mons, Belgium