1. Department of Physics, Purdue University, West Lafayette, Indiana 47907, United
States
2. Birck Nanotechnology
Center, Purdue University, West Lafayette,
Indiana 47907, United
States
3. Center for Advanced
Materials,
and Department of Electrical and Computer Engineering, University of Houston, Houston, Texas 77204, United
States
4. Ingram School of
Engineering
and Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, Texas 78666, United
States
5. Center for Nanoscale
Materials, Argonne National Laboratory,
Argonne, Illinois 60439,
United States
6. School of Electrical
and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United
States