1. Institute for Materials Research, Tohoku University, Sendai, Japan
2. Department of General Engineering, National Institute of Technology, Sendai College, Natori, Japan
3. Eiwa Co., Ltd., Kamaishi, Japan
4. Department of Advanced Machinery Engineering, School of Engineering, Tokyo Denki University, Tokyo, Japan
5. Graduate School of Science and Engineering, Ibaraki University, Hitachi, Japan
6. New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai, Japan