1. Department of Chemistry and Center for Materials Research, Norfolk State University, 700 Park Avenue, Norfolk, Virginia 23504, United States
2. Department of Physics and Center for Materials, Norfolk State University, 700 Park Avenue, Norfolk, Virginia 23504, United States
3. Materials Science Division/NIF, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
4. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States