1. Department of Electrical Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
2. Microelectronics-Photonics Program, University of Arkansas, Fayetteville, Arkansas 72701, USA
3. Department of Electrical Engineering and Physics, Wilkes University, Wilkes Barre, Pennsylvania 18766, USA
4. School of Electrical, Energy and Computer Engineering, Arizona State University, Tempe, Arizona 85287, USA
5. Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
6. Arktonics, LLC, 1339 South Pinnacle Drive, Fayetteville, Arkansas 72701, USA