1. Inorganic Materials Chemistry; Ruhr-University Bochum; Universitätsstr. 150 44801 Bochum Germany
2. Institute of Electrochemistry; Ulm University; Albert-Einstein-Allee 47 89069 Ulm Germany
3. RUBION; Ruhr-University Bochum; Universitätsstr. 150 44801 Bochum Germany
4. Microsystems Technology; Ruhr-University Bochum; Universitätsstr. 150 44801 Bochum Germany