He was the team leader for TEAM SNU for DRC Finals. He received the B.S. and M.S. degrees from Seoul National University, Korea, in 1995 and 1999, respectively, and the Ph.D. degree from Stanford University, U.S. in 2006. From 2006 to 2009, He was a Post-doctoral researcher and later a Research Associate at Stanford Artificial Intelligence Laboratory. From 2007 to 2008, he also worked part-time at Hansen Medical Inc., a medical robotics company in U.S. Since 2009, he has been a professor in the department of Transdisciplinary Studies at Seoul National University, Korea. His research interests lie in the areas of robot-environment interaction, contact force control, robust haptic teleoperation, multicontact control, whole-body dynamic control, biomechanics, and medical robotics.