Ji-Won Choi received his Ph.D. degree, following a M.S. degree and B.S. degree in Ceramic Engineering from Yonsei University. He joined Cornell University as a post doctoral fellow in 2004 to 2005. He also joined National Institute of Standard and Technology as a guest researcher in 2013. He has joined Korea Institute of Science and Technology (KIST) since 1994, where he conducted research in the science and technology of microwave dielectric, piezoelectric, transparent conducting oxide, thin film rechargeable batteries, and nano-sheet materials and devices. He has been highly productive during his career with over 200 research publications, book chapters, and 120 domestic and foreign Patents. He is currently exploiting high-throughput techniques for the discovery of novel inorganic materials including dielectrics, optical materials as well as electrodes for Li-ion batteries. He is a director and editor Member of The Korean Institute of Electrical and Electronic Material Engineers, The Korean Ceramic Society, and The Korean Sensors Society.