Justin (Seok Hee) grew up in Seoul, Korea. He obtained his bachelor's degree in chemistry at Seoul National University (SNU). In 2021, he completed his Ph.D. under the guidance of Prof. Taek Dong Chung at SNU. Justin worked on utilization of Fourier transform electrochemical impedance spectroscopy (FT-EIS) as a real-time electroanalytical technique, and the development of ion-based information processing platform on microchip. His graduate study covers a variety of applications such as examination of physical/chemical processes, electrochemical sensors, and ionic devices. Justin joined Prof. Swager’s lab as a postdoctoral fellow in September 2021.