1. National University of Singapore,Department of Electrical and Computer Engineering,Singapore,117583
2. Université Polytechnique Hauts de France,Institut d'Electronique, de Microélectronique et de Nanotechnologie, IEMN CNRS UMR 8520,Valenciennes,France,59309
3. 3D Oxides SAS,St Genis Pouilly,France,01630