His research mainly concerns medical robots, computational structural biology and human kinetics. Prior to joining UT Dallas in 2011, he was a postdoctoral fellow in Mechanical Engineering at Johns Hopkins University. He received his PhD degree in Mechanical Engineering from Johns Hopkins University in 2008. He also received the B.S.E. and M.S.E. degrees in Mechanical Engineering from Seoul National University, Seoul, Korea, in 1999 and 2003, respectively. He received the IEEE Transactions on Automation Science and Engineering Best Paper Award in 2015. He was also a recipient of Creel Family Fellowship at Johns Hopkins University in 2007. He is a member of IEEE and ASME.