Theoretical Physics Seminar at School of Physics, Center for Theoretical Physics, Seoul National University (Seoul, Korea, June 8)
Industrial Day, University of Massachusetts, Lowell (Lowell, MA, April 28, 2006)
U.S.-Korea Forum on Nanotechnology (Seoul, Korea, April 3)
Colloquium at Department of Physics and Applied Physics, University of Massachusetts Lowell (Lowell, MA, USA, February 22)