1. Institute for Technical and Macromolecular Chemistry, Functional and Interactive Polymers, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
2. DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
3. Chair for Laser Technology LLT, RWTH Aachen University, Steinbachstraße 15, 52074 Aachen, Germany
4. Fraunhofer-Institute for Laser Technology ILT, Steinbachstraße 15, 52074 Aachen, Germany