Prof. Mike Downer will be chairing the 11th international conference on Optics of Surfaces and Interfaces (OSI-11) from June 28 to July 3, 2015 at the Joe C Thompson Conference Center and LBJ Presidential Library and Museum on the UT-Austin campus. OSI highlights new developments in optical techniques for probing interfaces and nanostructures, and new advances in basic and applied optical surface science. For further information, see http://www.osiconference.org/osi2015/index.php.