1. Department of Protein Science; School of Chemistry, Biotechnology, and Health; KTH Royal Institute of Technology; AlbaNova University Center; 10691 Stockholm Sweden
2. Solid-State Electronics; The Ångström Laboratory; Uppsala University; Uppsala Box 534 SE-751 21 Uppsala Sweden
3. Department of Applied Physics; School of Engineering Sciences; KTH Royal Institute of Technology; 16440 Kista Sweden