1. Departments of Physics and Materials Science and Engineering, P.O. Box 311427, University of North Texas, Denton, Texas 76203, Department of Bioengineering, University of Texas at Arlington, P.O. Box 19138, Arlington, Texas 76019, NIST Center for Theoretical and Computational Nanosciences, Gaithersburg, Maryland 20899, Harrington Department of Bioengineering, Arizona State University, Tempe, Arizona 85287, and Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico...