1. Shinshu University,Faculty of Engineering,Dept. Of Materials Chemistry,Nagano-shi,Japan
2. Shinshu University,Faculty of Engineering,Dept. of Engineering,Nagano-shi,Japan
3. Shinshu University,Faculty of Engineering,Dept. of Electrical and Computer Engineering,Nagano-shi,Japan
4. Shinshu University, Faculty of Engineering,Engineering Core Division,Nagano-shi,Japan