1. Bronx High School of Science, 75 W 205th Street, Bronx, New York 10468, United States
2. Department of Physics, City College of New York and Advanced Science Research Center, Graduate Center of the City University of New York, 85 St Nicholas Terrace, New York 10031, United States
3. Department of Physics, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, United States
4. Department of Physics, Graduate Center of the City University of New York, 365 5th Avenue, New York, New York 10016, United States
5. Department of Physics, Queens College of the City University of New York, 65-30 Kissena Blvd, Flushing, New York 11367, United States
6. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
7. Department of Mechanical Engineering, University of California at Riverside, Bourns Hall, Riverside, California 92521, United States