1. School of Chemical Materials and Biomedical Engineering College of Engineering University of Georgia Athens GA 30602 USA
2. Department of Physics and Astronomy University of Georgia Athens GA 30602 USA
3. Department of Mechanical Engineering Virginia Tech Blacksburg VA 24061 USA
4. JENSEN HUGHES, Inc. Blacksburg VA 24060 USA
5. College of Public Health University of Georgia Athens GA 30602 USA
6. School of Electrical and Computer Engineering College of Engineering University of Georgia Athens GA 30602 USA