1. George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta GA 30332‐0405 USA
2. Concentrating Solar Technologies Sandia National Laboratories P.O. Box 5800 Albuquerque NM 87185‐1127 USA
3. ASU LightWorks Arizona State University PO Box 875402 Tempe AZ 85287‐5402 USA