1. SKKU Advanced Institute of Nanotechnology (SAINT); Center for Human Interface Nanotechnology (HINT); SKKU-Samsung Graphene Center; Sungkyunkwan University (SKKU); Suwon 440-746 Republic of Korea
2. School of Advanced Materials Science and Engineering; Sungkyunkwan University (SKKU); Suwon 440-746 Republic of Korea
3. School of Mechanical Engineering; Sungkyunkwan University (SKKU); Suwon 440-746 Republic of Korea
4. Electronic Materials Research Center; Korea Institute of Science and Technology (KIST); Seoul 136-791 (Republic of Korea) KU-KIST Graduate School of Converging Science and Technology, Korea University; Seoul 136-701 Republic of Korea
5. Research Planning & Coordination Division; Korea Institute of Science and Technology (KIST); Seoul 136-791 Republic of Korea