He received B.S. from KAIST and Ph.D. from the University of Pennsylvania. His thesis was on the phase behavior of polymer blends and nanocomposite films. Following graduation, he worked 3 years as a senior engineer at Samsung Display in Korea, where he contributed in developing prototype large-area OLED TVs. Then, he developed a wearable epidermal and epicardial biosensor arrays during his postdoctoral training at the University of Illinois at Urbana-Champaign. His current research interests are on tough hydrogels and elastomers and their applications in energy storage devices and wearable bioelectronics. He is the recipient of Hanwha Non-Tenured Faculty Award in 2015.