1. School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
2. SK Hynix Incorporation, Icheon-si, Gyeonggi-do 17336, Korea
3. Lam Research Corporation, Fremont, California 94538, United States
4. Versum Materials Incorporation, Carlsbad, California 92011, United States
5. Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Korea