Korea University, Korea University, Korea University, affiliation not provided to SSRN, Pohang University of Science and Technology (POSTECH) - Department of Materials Science and Engineering, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Pohang University of Science and Technology (POSTECH) - Department of Materials Science and Engineering, Korea University and Korea University - Department of Materials Science and Engineering