Young-Man Choi (Member, IEEE) received the B.S., M.S., and Ph.D. degrees in mechanical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2002, 2004, and 2008, respectively. From 2008 to 2011, he worked with the National Institute of Standards and Technology, USA. From 2012 to 2016, he was a Senior Researcher with the Korea Institute of Machinery and Materials, Daejeon, South Korea. He is currently an Associate Professor with the Department of Mechanical Engineering, Ajou University, Suwon, South Korea. His research interests include high precision machines, roll-to-roll printing machines, and wearable biomechanical devices.