1. California NanoSystems Institute (CNSI) at UCLA, 570 Westwood Plaza, Los Angeles, California 90095
2. Department of Physiology, David Geffen School of Medicine at UCLA, 650 Charles Young Drive South, Los Angeles, California 90095
3. Veeco Instruments, Inc., 2650 East Elvira Road, Tucson, Arizona 85756
4. Department of Chemistry and Biochemistry, UCLA, 607 Charles Young Drive East, Los Angeles, California, 90095