K. Charles Janac has served as our President and Chief Executive Officer and on our board of directors since July 2005, and has served as Chairman of our board of directors since August 2007. Previously, Mr. Janac served as President and Chief Executive Officer of Nanomix Inc., an early developer of carbon nanotube based nano electronic sensors, from September 2001 to January 2003. From 1999 to 2001, Mr. Janac served as an Entrepreneur in Residence at Infinity Capital, an early-stage Venture Capital Firm. Prior to that, Mr. Janac served as President and Chief Executive Officer of Smart Machines, a semiconductor wafer handling robotics firm from 1993 to 1999.