1. Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, United States
2. UES Inc., Dayton, Ohio 45433, United States
3. Department of Biology, University of Dayton, Dayton, Ohio 46469, United States
4. Department of Electrical & Computer Engineering, Duke University, Durham, North Carolina 27708, United States
5. Department of Chemistry, Duke University, Durham, North Carolina 27708, United States