1. Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main Street, MS-362, Houston, Texas 77005, United States
2. West Houston Center for Science & Engineering, Houston Community College, MC 1524H 2811 Hayes Road, Houston, Texas 77082, United States
3. Shared Equipment Authority, Rice University, 6100 Main Street, Houston, Texas 77005, United States
4. Center of Functional Nanomaterials, Brookhaven National Laboratory, 98 Rochester St., Upton, New York 11973, United States
5. Department of Materials Science and Nanoengineering, Rice University, 6100 Main Street, MS-325, Houston, Texas 77005, United States