1. Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, New York 13902, United States
2. Department of Physics, Applied Physics and Astronomy & Materials Science and Engineering Program, State University of New York, Binghamton, New York 13902, United States
3. Center
for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States