1. Department of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech Building 345 East, DK-2800 Kgs. Lyngby, Denmark
2. Department of Physics, Technical University of Denmark, DTU Physics Building 309, DK-2800 Kgs. Lyngby, Denmark
3. CAPRES A/S, Scion-DTU, Building 373, DK-2800 Kgs. Lyngby, Denmark
4. Danish National Research Foundation's Center for Individual Nanoparticle Functionality (CINF), Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark