1. Conformal Coating of Nanostructures (CoCooN), Department of Solid State Sciences, Ghent University, Krijgslaan 281 (S1), 9000 Ghent, Belgium
2. Laboratory for Chemical Technology, Ghent University, Technologiepark 125, B-9052 Zwijnaarde, Ghent, Belgium
3. Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
4. Université de Paris, Laboratoire Matériaux et Phénomènes Quantiques, CNRS, F-75013 Paris, France