1. University of Duisburg-Essen, CENIDE – Center for Nanointegration Duisburg-Essen,General and Theoretical Electrical Engineering (ATE),Duisburg,Germany,47048
2. Université catholique de Louvain,RF SOI Group,Louvain-la-Neuve,Belgium,1348
3. Goethe University Frankfurt am Main,Institute of Physics,Frankfurt am Main,Germany,60438