**Author details**

Guang-Hoon Kim1\*, Juhee Yang1 , Byunghak Lee1 , Bosu Jeong1 , Sergey Chizhov1 , Elena Sall1 , Vladimir Yashin2 and Uk Kang1

\*Address all correspondence to: ghkim@keri.re.kr

1 Advanced Medical Device Research Division, Korea Electrotechnology Research Institute, Ansan-si, Republic of Korea

2 State Optical Institute, St. Petersburg, Russia
