Sejong University, Sejong University, Sejong University, affiliation not provided to SSRN, Korea Institute of Science and Technology (KIST), Sejong University, Sejong University, Pohang University of Science and Technology (POSTECH) - Pohang Accelerator Laboratory, Pohang University of Science and Technology (POSTECH) - Pohang Accelerator Laboratory, Pohang University of Science and Technology (POSTECH) - Pohang Accelerator Laboratory and Sejong University - Faculty of Nanotechnology and Advanced Materials Engineering