1. Post‐Silicon Semiconductor Institute Korea Institute of Science and Technology Seoul 02792 Republic of Korea
2. YU‐KIST Yonsei University Seoul 03722 Republic of Korea
3. Department of Materials Science and Engineering Yonsei University Seoul 03722 Republic of Korea
4. Center for Neuromorphic Engineering Korea Institute of Science and Technology Seoul 02792 Republic of Korea
5. Department of Materials Science and Engineering Korea University Seoul 02841 Republic of Korea
6. Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of Korea
7. Department of Radiology Seoul National University Bundang Hospital Seoul National University College of Medicine Seongnam 13620 Republic of Korea
8. Division of Nano & Information Technology Korea University of Science and Technology Daejeon 34316 Republic of Korea