Prof. Hyung-Jun Koo received a BS in Chemical & Biological Engineering from Seoul National University (2004) and a Ph.D. in Chemical & Biomolecular Engineering from NC State University (2012) under the guidance of Professor Orlin D. Velev. From 2012 to 2014 he was a post-doctoral fellow working with Professor Paul V. Braun at the University of Illinois at Urbana-Champaign. In 2014, he joined the Department of Chemical & Biomolecular Engineering at the Seoul National University of Science and Technology. His research interests include the fundamental understanding of physicochemical properties of soft materials such as polymers, gels, and liquid metals and their applications.