1. Faculty of
Engineering, Shinshu University, 4-17-1
Wakasato, Nagano 380-8553, Japan
2. Korea Institute of Science and Technology (KIST), Eunhari san 101, Bongdong-eup, Wanju-gun, Jeonbuk 565-905, Korea
3. Research Center for Exotic Nanocarbons
(JST), Shinshu University, 4-17-1 Wakasato,
Nagano 380-8553, Japan