1. Organic Materials and Fiber Engineering, Jeonbuk National University, 567 Baekje-daero, Deogjin-dong, Doekgin-gu, Jeonju-si, Jeollabuk-do 54896, Korea
2. Metrology and Sensing Group, Samsung Electro-Mechanics Co., Ltd, 150, Maeyeong-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16674, Korea