1. Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory Code 6900, Washington, DC 20375, United States
2. National Research Council, 500 Fifth St NW, Washington, DC 20001, United States
3. Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
4. College of Science, George Mason University, Fairfax, Virginia 22030, United States
5. Optical Sciences Division, Code 5600, U.S. Naval Research Laboratory, Washington, DC 20375, United States
6. Jacobs Corporation, Hanover, Maryland 21076, United States