1. Department of Materials Science and Engineering, Technion Israel Institute of Technology, Haifa 32000, Israel
2. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Building 137, Menlo Park, California 94025, United States
3. Department of Chemistry, Stanford University, Stanford, California 94305-4125, United States
4. Russell Berrie Nanotechnology Institute, Technion Israel Institute of Technology, Haifa 32000, Israel
5. Department of Chemical Engineering, University of Waterloo, 200 University Ave West, Waterloo, Ontario N2L 3G1, Canada