Affiliation: | 1. Department of Electrical and Computer Engineering, University of Massachusetts, Amherst, MA, USA;2. Hewlett Packard Labs, Palo Alto, CA, USA;3. Department of Physics, Loughborough University, Loughborough, UK;4. Air Force Research Lab, Information Directorate, Rome, NY, USA;5. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA |