1. Interdisciplinary Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan
2. Division of Frontier Fibers, Institute for Fiber Engineering, ICCER, Shinshu University, Ueda, Nagano 386-8567, Japan
3. Faculty of Textile Science & Technology, Shinshu University, Ueda, Nagano 386-8567, Japan