1. Institute for Biopolymers (ibp) at Hof University, Hof University of Applied Sciences, 95028 Hof, Germany
2. Plastics Technology Group, Faculty of Mechanical Engineering, Technische Universität Ilmenau, 98683 Ilmenau, Germany
3. Medical and Biological Physics Program, Faculty of Science, McMaster University, Hamilton, ON L8S 4LD, Canada