1. Department of Materials and Nano Physics, KTH Royal Institute of Technology, Electrum 229, 16440 Kista, Sweden
2. Materials Department, University of California, Santa Barbara, California 93106, USA
3. Kyma Technologies Inc., 8829 Midway West Road, Raleigh, North Carolina 27617, USA
4. Semiconductor Research Center, Wright State University, Dayton, Ohio 45435, USA
5. Air Force Research Laboratory Sensors Directorate, Wright-Patterson AFB, Ohio 45433, USA
6. Wyle Laboratories, Inc., 2601 Mission Point Blvd., Dayton, Ohio 45431, USA