1. Graduate School of Science and EngineeringYamagata University Jyonan 4-3-16 Yonezawa Yamagata 992-8510 Japan
2. Division of Materials ScienceNara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0192 Japan
3. Graduate School of EngineeringNagasaki University 1-14 Bunkyo-machi Nagasaki 852–8521 Japan