[1] ETH, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland
[2] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan
[3] ETH, Inst Mol Syst Biol, CH-8093 Zurich, Switzerland
[4] Swiss Fed Labs Mat Sci & Technol, Lab Elect Metrol Reliabil, EMPA, CH-8600 Dubendorf, Switzerland
[5] Univ Groningen, Groningen Biomol Sci & Biotechnol Inst, NL-9747 AG Groningen, Netherlands