Affiliation: | a Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul, Republic of Korea;b Department of Materials Science and Engineering, Sungkyunkwan University, 300 Chunchun-Dong, Jangan-Gu, Suwon, Republic of Korea;c Department of Multimedia-System Engineering, University of Incheon, 12-1 Songdo-Dong, Yeonsu-Gu, Incheon, Republic of Korea |