1. Homer L. Dodge Department of Physics and Astronomy University of Oklahoma 440 W. Brooks St. Norman OK 73019 USA
2. U.S. Naval Research Laboratory 4555 Overlook Ave SW Washington DC 20375 USA
3. The George Washington University 2121 I Street NW Washington DC 20037 USA
4. NanoPower Research Laboratories Rochester Institute of Technology Rochester NY 14623 USA