1. Aalto University, Department of Electronics and
Nanoengineering, Tietotie 3, 02150 Espoo, Finland
2. Universitat Politècnica de Catalunya, Dept.
Enginyeria Electrònica, C/ Jordi Girona 1-3, Mòdul C4, E - 08034 Barcelona,
Spain
3. Defect Lab, Ira A. Fulton Schools of Engineering, School of Electrical,
Computer and Energy Engineering (ECEE), Arizona State University, 551 E. Tylor Mall, Tempe, Arizona 85287,
USA