►  University of Tennessee，Oak Ridge National Laboratory(ORNL),USA   (1996)
► University of California at Los Angeles(UCLA),USA   (2000)
► Karolinska Institute of Medicine，Stockholm University, Lund University，Royal institute  of Technology Uppsala  University , Sweden  (2002)
►  University of Helsinki,  Finland  (2002)
►  University of Copenhagen, Danmark  (2002)
►  Université de Paris-Sud-Paris 11. Paris，Université Paris Dauphine-Paris 9, Ecole Normale Superieure Paris,  France  (2003)
►  University of British Columbia，Queen’s University, University of Laval，University of  Toronto,  Canada  (2004)
►  The University of Hong Kong  (HKU)，The Hong Kong University of Science & Technology(HkUST) ,The Hong Kong Polytechnic University  (2005)
►  Hanyang University, Korea University，University of Seoul, Sungkyunkwan University, The Korea Advanced Institute of Science and  Technology, Hannam University, Korea (2009.9.)
►  Yale University, Columbia University，USA  (2009.10.)
►  National Chengchi University(NCCU)，I-Shou University(ISU), Taiwan  (2010.6.)
►  The Hong Kong Polytechnic University (2010.10)
►  The Hong Kong Polytechnic University, The Hong Kong Polytechnic University (2011.11)