1. Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, Stanford, California 94305, United States
2. SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
3. Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
4. Department of Chemistry, Stanford University, Stanford, California 94305, United States
5. Stanford Nano Shared Facilities, Stanford University, Stanford, California 94305, United States
6. Department of Physics, Kaunas University of Technology, LT-51368 Kaunas, Lithuania