1. Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE)
2. University of Duisburg-Essen
3. 45141 Essen
4. Germany
5. Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE)
6. 47057 Duisburg
7. Institute of Photonic Technologies (LPT)
8. Friedrich-Alexander Universität Erlangen-Nürnberg
9. 91052 Erlangen
10. Erlangen Graduate School in Advanced Optical Technologies (SAOT)
11. GROC·UJI, Institute of New Imaging Technologies
12. Institute of Particle Technology (LFG)
13. 91058 Erlangen