1. Smart Materials Engineering; Faculty of Textiles and Technology; Shinshu University; Ueda Nagano 386-8567 Japan
2. Department of Electrical and Electronic Engineering; Faculty of Engineering; Shinshu University; Nagano Nagano 380-8553 Japan
3. R & D Laboratory for Fiber & Textiles Technology; Asahi Kasei Fibers Corporation; Nobeoka Miyazaki 882-0031 Japan