1. Department of Physics, The University of Texas at Dallas, Richardson, Texas 75080, United States
2. The Center for Photochemical Sciences and Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, United States
3. Advanced Membranes and Porous Materials Center and KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
4. Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson, Texas 75080, United States
5. Nanohmics Inc., 6201 E. Oltorf, Suite 400, Austin, Texas 78741, United States