1. Institute for Nanoscience and Engineering, University of Arkansas, 731 W Dickson Street, Fayetteville, Arkansas 72701, United States
2. Naval Surface Warfare Center Crane, 300 HWY 361, Crane, Indiana 47522, United States
3. Physics Department, University of Arkansas, 835 W Dickson Street, Fayetteville, Arkansas 72701, United States
4. Agnitron Technology Incorporated, Chanhassen, Minnesota 55317, United States
5. Twin Cities Engineering, Minnesota State University, Mankato, 9700 France Avenue, Suite P0820, Bloomington, Minnesota 55431, United States
6. Department of Electrical Engineering, University of Arkansas, 4183 Bell Engineering Center, Fayetteville, Arkansas 72701, United States