1. National Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401-3305, United States
2. Department of Chemistry, University of Southern California, 840 Downey Way, Los Angeles, California 90089-0744, United States
3. Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, 925 Bloom Walk, Los Angeles, California 90089-1211, United States
4. School of Chemical Engineering, University of New South Wales, High Street, Sydney, New South Wales 2052, Australia
5. Department of Physics, Illinois Institute of Technology, 3101 South Dearborn Street, Chicago, Illinois 60616, United States
6. Department of Biomedical Engineering, University of Southern California, 1042 Downey Way, Los Angeles, California 90089-0260, United States