1. Center for Fiber and Textile Science; Kyoto Institute of Technology; Matsugasaki Kyoto 606-8585 Japan
2. BMG Incorporated; 45 Minamimatsunoki-cho Higashikujo, Minami-ku Kyoto 601−8023 Japan
3. School of Materials Science; Japan Advanced Institute of Science and Technology; 1-1 Asahidai, Nomi Ishikawa 923-1292 Japan