[1] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA
[2] MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[3] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
[4] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA
[5] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA
[6] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA
[7] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA
[8] Colorado Sch Mines, Mat Sci Program, Dept Chem & Geochem, Golden, CO 80401 USA
[9] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA