Affiliation: | aFukuoka Industrial Technology Center, 3-6-1 Norimatsu, Yahatanishi-ku, Kitakyushu 807-0831, Japan bDepartment of Materials Science and Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu 804-8550, Japan cCREST-Japan Science and Technology Agency, Japan |