Youngsik Lee1,2, Dae-Hyeong Kim3,4. 1. Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Republic of Korea. 2. School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea. 3. Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, Republic of Korea. dkim98@snu.ac.kr. 4. School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea. dkim98@snu.ac.kr.