This supplement requests includes costs for William G. Axinn, PIRE PI and Jianguo Liu, PIRE Co-PI to attend our NSF PIRE Reverse Site Visit (RSV) scheduled for January 11, 2010. Because the program announcement did not specifically instruct us to budget for this RSV in our original project budget, NSF is willing to provide a supplement to cover the cost of two Senior Personnel to travel to the RSV.