1. Department of Chemistry and Biochemistry, Brigham Young University, C100 BNSN, Provo, Utah 84602, United States
2. Casa Software Ltd., Bay House, 5 Grosvenor Terrace, Teignmouth, Devon TQ14 8NE, U.K.
3. Nanoscale and Microscale Research Centre (NMRC) and School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
4. Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
5. Institut des Matériaux Jean Rouxel, IMN, Université de Nantes, CNRS, F-44000 Nantes, France
6. Institut für Physik, Westfälische Wilhelms-Universität, 48149 Münster, Germany
7. Eigenvector Research, Inc., Manson, Washington 98831, United States