1. Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400, United States
2. US Nano, LLC, 1748 Independence Boulevard, Building A, Sarasota, Florida 34234, United States
3. Department of Physics, Farmingdale State College, Farmingdale, New York 11735-1021, United States
4. Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory, Building 480, Upton, New York 11973, United States
5. Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, United States
6. Department of Chemistry, Manhattan College, Riverdale, New York 10471, United States
7. Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794-3800, United States