*Masanobu Haraguchi¹, Kanta Nagayama¹, Toshihiro Okamoto¹, Kanzo Yamaguchi¹, Fumiyoshi Kuwashima², Masahiko Tani³ (1. Tokushima University, 2. Fukui University of Technology, 3. University of Fukui)

*Yoriko Tominaga¹, Fumitaro Ishikawa², Noriaki Ikenaga³, Osamu Ueda⁴ (1. Hiroshima University, 2. Hokkaido University, 3. Kanazawa Institute of Technology, 4. Meiji University)

*Mary Clare Escaño¹, Tien Quang Nguyen², Masahiko Tani¹ (1. Research Center for Development of Far-Infrared Region, University of Fukui, 2. Research Initiative for Supra-Materials, Shinshu University)