is currently a research scientist in Mechanical Engineering at the Massachusetts Institute of Technology (MIT). He received a B.S. (2004) in Chemical Engineering from Kwangwoon University, Korea, and his M.S. (2006) and Ph.D. (2011) degrees in Material Science and Engineering from the Gwangju Institute of Science and Technology (GIST), Korea. His research interests are nano/micro fabrication, additive manufacturing, and electrochemical energy applications. Recently, he has been actively conducting research on process development and characterization of micro lattices for the development of 3D solid oxide fuel cells and 3D batteries based on additive manufacturing.