1. AFRL/711HPW/RHPB, Wright-Patterson Air Force Base, Ohio 45433-5707, United States
2. Advanced Materials Department, IPICYT, Camino a la Presa San José 2055, San Luis Potosí 78216, México
3. Institute of Condensed Matter and Nanosciences (IMCN), Université Catholique de Louvain, Place Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
4. Research Center for Exotic Nano Carbons (JST), Shinshu University, 4-17-1 Wakasato, Nagano City 380-8553, Japan
5. Department of Physics, Department of Materials Science and Engineering & Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802-6300, United States