1. Department of Material ScienceGraduate School of Material ScienceUniversity of Hyogo 3-2-1, Kouto Kamigori, Ako Hyogo 678-1297 Japan
2. Graduate School of Materials ScienceNara Institute of Science and Technology 8916-5, Takayama Ikoma Nara 630-0192 Japan
3. Division of Liberal ArtsCentre for Promotion of Higher EducationKogakuin University 2665-1, Nakano Hachioji Tokyo 192-0015 Japan