1. Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
2. Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), North Carolina State University, Raleigh, North Carolina 27606, United States
3. Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
4. Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States