Dais, C. [P:(DE-HGF)0] ; Mussler, G. [P:(DE-Juel1)128617] ; Fromherz, T. [P:(DE-HGF)0] ; Müller, E. [P:(DE-HGF)0] ; Solak, H. H. [P:(DE-HGF)0] ; Grützmacher, D. [P:(DE-Juel1)125588]