1. Department of Chemistry, Stanford University, Stanford, CA 94305
2. Department of Chemistry, Rice University, Houston, TX 77005
3. Department of Biosciences, Rice University, Houston, TX 77005
4. Smalley–Curl Institute, Rice University, Houston, TX 77005
5. Institute of Biosciences and Bioengineering, Rice University, Houston, TX 77005
6. Bioengineering, Stanford University, Stanford, CA 94305
7. Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720
8. Department of Physics, University of California, Berkeley, Berkeley, CA 94720