1. Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Code 6900, Washington, D.C. 20375-5438, United States
2. WET Laboratories, Inc., Department of Research, 70 Dean Knauss Drive, Narragansett, Rhode Island 02882, United States
3. Hydro-Optics, Sensors, and Systems Section, Naval Research Laboratory, Code 7333, Stennis Space Center, Mississippi 39529-5004, United States