Chen, L. [P:(DE-HGF)0] ; Hofmann, D. [P:(DE-Juel1)129471] ; Klumppp, E. [P:(DE-Juel1)VDB108912] ; Xiang, X. [P:(DE-HGF)0] ; Chen, Y. [P:(DE-HGF)0] ; Küppers, S. [P:(DE-Juel1)133844]