1. Device
Research Laboratory, Department of Electrical Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095, United States
2. Department
of Materials Science and Engineering, University of California, Los Angeles, 410 Westwood Plaza, Los
Angeles, California 90095, United States
3. Department
of Materials Science and NanoEngineering, Rice University, 6100
Main Street, Houston, Texas 77005, United States
4. Center
of Electron Microscopy, State Key Laboratory of Silicon Materials,
School of Materials Science and Engineering, Zhejiang University, 38 Zhe Da Road, Hangzhou, Zhejiang 310027, China
5. Space and Naval
Warfare Systems Center Pacific, 53560
Hull Street, San Diego, California 92152, United States
6. Department
of Electrical and Computer Engineering, University of California, Riverside, 900 University Avenue, Riverside, California 92521, United States