[1] Ulsan Natl Inst Sci & Technol, Low Dimens Carbon Mat Res Ctr, Sch Mat Sci & Engn, Wearable Elect Res Grp, Ulsan 689798, South Korea
[2] Samsung Display, Display Res Ctr, Yongin 446711, South Korea
[3] Korea Inst Machinery & Mat, Dept Ultra Precis Machines & Syst, Taejon 305343, South Korea