[1] Kangwon Natl Univ, Dept Adv Mat Sci & Engn, Chunchon 200701, South Korea
[2] Yonsei Univ, Dept Met Engn, Seoul 120749, South Korea
[3] Korea Inst Sci & Technol, Nano Mat Res Ctr, Seoul 130650, South Korea
[4] Samsung Adv Inst Technol, M&D Lab, Suwon 440600, South Korea