1. imec, Bio-Nano Electronics, Functional Nanosystems, Kapeldreef 75, B-3001 Leuven, Belgium
2. Department of Chemistry, Quantum and Physical Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
3. Department of Cellular and Molecular Interactions, Vlaams Interuniversitair Instituut voor Biotechnologie (VIB), Pleinlaan 2, B-1050 Brussel, Belgium
4. Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium
5. Department of Physics, Laboratory of Solid State Physics and Magnetism, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium