Department of NanoEngineering University of California San Diego La Jolla CA 92093 USA;
Chemistry Department Stony Brook University Stony Brook NY 11794 USA;
Department of Physics Applied Physics and Astronomy Binghamton University Binghamton NY 13902 USA;
Advanced Light Source Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA;
National Center for Electron Microscopy Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA 94720 USA;