1. Photo-electronic
Hybrids Research Center, Korea Institute of Science and Technology (KIST), Seoul 136-791, Korea
2. Nano-Materials
and Engineering, Korea University of Science and Technology (UST), Daejeon 305-333, Korea
3. Carbon
Nanomaterials Design Laboratory, Global Research Laboratory, Research
Institute of Advanced Materials, Department of Materials Science and
Engineering, Seoul National University, Seoul 151-744, Korea