1. Applied Functional Polymers, University of Bayreuth, Universitätsstraße 30, Bayreuth 95447, Germany
2. Electrical Energy Systems, Ludwig-Thoma-Straße 36a, Bayreuth 95447, Germany
3. Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, Bayreuth 95447, Germany