1. Department of Mechanical Engineering, Stanford University, Stanford, California 94305, United States
2. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
3. Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
4. Department of Physics, University of Maryland, College Park, Maryland 20742, United States
5. Department of Mathematics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
6. Department of Photon Science, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
7. Precourt Institute for Energy, Stanford University, Stanford, California 94305, United States