1. Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
2. C-Crete Technologies, Stafford, Texas 77477, United States
3. Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
4. Smalley-Curl Institute, NanoCarbon Center and Welch Institute for Advanced Materials, Rice University, 6100 Main Street, Houston, Texas 77005, United States