1. Energy and Materials Division, Toyota Research Institute 1 , Los Altos, California 94022, USA
2. Department of Chemical Engineering, Massachusetts Institute of Technology 2 , Cambridge, Massachusetts 02142, USA
3. Department of Mathematics, Massachusetts Institute of Technology 3 , Cambridge, Massachusetts 02142, USA
4. National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory 4 , Berkeley, California 94720, USA
5. Department of Chemical Engineering, Stanford University 5 , Palo Alto, California 94305, USA
6. Department of Chemical Engineering, Carnegie Mellon University 6 , Pittsburgh, Pennsylvania 15213, USA
7. Department of Materials Science and Engineering, University of California, Berkeley 7 , Berkeley, California 94720, USA
8. Research Laboratory of Electronics, Massachusetts Institute of Technology 8 , Cambridge, Massachusetts 02139, USA
9. Department of Materials Science and Engineering, Georgia Institute of Technology 9 , Atlanta, Georgia 30332, USA
10. Department of Materials Science and Engineering, Northwestern University 10 , Evanston, Illinois 94305, USA