a
IMETUM, Physics Department, CeNS, Technische Universität München, 85748 Garching, Germany
E-mail: thugel@mytum.de
b
ZNN/WSI, Technische Universität München, 85748 Garching, Germany
c
Center of Excellence Automated Infusion Systems, B.Braun Melsungen AG, 34212 Melsungen, Germany
d
Center for Integrated Protein Science Munich, CIPSM, Germany