(untitled) - Yu, S J; Pak, K; Kwak, M J; Joo, M; Kim, B J; Oh, M S; Baek, J; Park, H; Choi, G; Kim, D H; Choi, J; Choi, Y; Shin, J; Moon, H; Lee, E; Im, S G (Adv. Eng. Mater., 2018)