Affiliation: | a Department of Electrical Engineering, Electromagnetic System, Ørsteds Plads, Building 348, Technical University of Denmark, Kgs. Lyngby 2800, Denmark b Department of Micro- and Nanotechnology, Technical University of Denmark, Kgs. Lyngby 2800, Denmark c CNR-IPCF SEZ. Bari C/O DIP. Di Chimica, Universita Di Bari, Via Orabona 4, Bari 70126, Italy d Physikalisches Institut, Goethe University of Frankfurt am Main Max-von-Laue-Strasse 1, 60438 Frankfurt am Main, Germany |