1. NIST Center for Theoretical and Computational Nanosciences, Physical and Chemical Properties Division, Gaithersburg, Maryland 20899, Altria Client Services, Research Development and Engineering, 601 E. Jackson Street, Richmond, Virginia 23219, Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, and Harrington Department Bioengineering, Arizona State University, Tempe, Arizona 85287 and Center for Integrated Nanotechnologies, Los Alamos National Laboratory,...