1. Department of Electrical Engineering and Computer Science, Center for Biomedical Engineering, Department of Materials Science and Engineering, and Center for Bits and Atoms, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory, Washington, D.C. 20375, and Department of Biochemistry, Cellular and Molecular Biology, and Center of Excellence in Environmental Biotechnology, University of Tennessee, Knoxville,...