1. Department of Materials Science and Engineering, National Chiao Tung University, Hshinchu 30050, Taiwan
2. Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78758, USA
3. Department of Electrical Engineering, School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, Arizona 86011, USA
4. Taiwan Semiconductor Research Institute, National Applied Research Laboratories, Hshinchu 30050, Taiwan