S. Bandow, G. Chen, G. U. Sumanasekera, R. Gupta, M. Yudasaka, S. Iijima, and P. C. Eklund* Department of Materials Science and Engineering, Japan Science and Technology Corporation, Meijo University, 1-501 Shiogamaguchi, Tenpaku, Nagoya 468-8502, Japan Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802 Japan Science and Technology Corporation, NEC Cor...