1. Institute of Electron Devices and Circuit; Ulm University; 89069 Ulm Germany
2. School of Electrical Engineering; Federal University of Uberlandia; 38408100 Uberlandia Brazil
3. Institute of Analytical and Bioanalytical Chemistry; Ulm University; 89069 Ulm Germany
4. Department of Drug Science, NIS Centre, CNISM; University of Torino; 10125 Torino Italy