[1] Univ Duisburg Essen, Tech Chem 1, Univ Str 7, D-45141 Essen, Germany
[2] Univ Duisburg Essen, Ctr Nanointegrat Duisburg Essen CENID, Univ Str 7, D-45141 Essen, Germany
[3] Univ Wuppertal, Sch Mech Engn & Safety Engn, Mat Sci & Addit Mfg, Gaussstr 20, D-42119 Wuppertal, Germany
[4] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Yudao St 29, Nanjing 210016, Peoples R China
[5] Univ Erlangen Nurnberg, Dept Photon Technol, Konrad Zuse Str 3-5, D-91052 Erlangen, Germany
[6] Bayer Laserzentrum, Konrad Zuse Str 3-5, D-91052 Erlangen, Germany
[7] Univ Oxford, Dept Engn Sci, MBLEM, Parks Rd, Oxford OX1 3PJ, England