1. Baskin
School of Engineering, University of California Santa Cruz, Santa Cruz, California 95064, United States
2. Nanostructured Energy Conversion Technology
and Research (NECTAR), Advanced Studies Laboratories, University of California Santa Cruz—NASA Ames Research Center, Moffett Field, California 94035, United States
3. Foothill College, Los Altos, California 94022, United States
4. Hewlett-Packard Labs, Palo Alto, California 94304, United States