1. Department of Chemical Engineering, University of California, Berkeley, California 94720, United States
2. The Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 67 R4110, Berkeley California 94720, United States
3. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States
5. Advanced Research Projects Agency—Energy (ARPA-E), U.S. Department of Energy, 1000 Independence Avenue, S.W., Washington, D.C. 20585, United States