1. Department of Materials Science & Engineering, North Carolina State University, Raleigh, North Carolina 27695, Graduate Group in Biophysics, University of California, San Francisco, California 94143, Department of Biochemistry and Biophysics, University of California, San Francisco, California 94143, Howard Hughes Medical Institute, University of California, San Francisco, California 94143, Corporate Research Division, The Procter & Gamble Company, Cincinnati, Ohio 45239, Department of Physics, Institute...