1. Samsung-SKKU
Graphene Center, Sungkyunkwan Advanced Institute of Nanotechnology
(SAINT) and School of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea
2. School of Mechanical
and Electrical Engineering, Guizhou Normal University, Guiyang 550002, China
3. Institute
of Advanced Composite Materials, Korea Institute of Science and Technology 864-9, Dunsan-ri, Bongdong-eup, Wanju-gun, Jeollabukdo 565-902, Republic of Korea