Jae-Hak Choi received the Ph.D. degree in advanced materials engineering (polymerics) from the Korea Advanced Institute of Science and Technology, Daejeon, Korea, in 1998. He was with Hynix Semiconductor Company, Ltd., Icheon, Korea, from 1998 to 2002, as a Senior Researcher, and the Korea Atomic Energy Research Institute, Daejeon, from 2005 to 2013, as a Principal Researcher. He is currently a Professor with the Department of Polymer Science and Engineering, Chungnam National University, Daejeon. He has authored over 100 journal articles and holds over 20 patents. His current research interests include functional polymeric materials and conductive carbon nanomaterials for electronic and energy devices.