*Shuzi Hayase¹ (1. Univ. of Electro-Communications (Japan))

*Atsushi Wakamiya¹, Minh Anh Truong¹, Tomoya Nakamura¹, Ryuji Kaneko¹, Richard Murdey¹ (1. Kyoto Univ. (Japan))

*Akinori Saeki¹ (1. Osaka Univ. (Japan))

*Kazuhiro Marumoto^1,2 (1. Divi. of Mater. Sci., Univ. of Tsukuba (Japan), 2. Tsukuba Res. Center for Energy Mater. Sci., Univ. of Tsukuba (Japan))

*Shahrir Razey Sahamir¹, Muhammad Akmal Kamarudin¹, Teresa Ripolles Sanchis², Juan Bisquert³, Qing Shen¹, Shuzi Hayase¹ (1. The University of Electro-Communications (Japan), 2. Rey Juan Carlos University (Spain), 3. Jaume I University (Spain))

*Muhammad Akmal Kamarudin¹, Shahrir Razey Sahamir¹, Kohei Nishimura¹, Satoshi Iikubo², Kenji Yoshino³, Takashi Minemoto⁴, Qing Shen¹, Shuzi Hayase¹ (1. Univ. of Electro-Communications (Japan), 2. Kyushu Inst. of Tech. (Japan), 3. Miyazaki Univ. (Japan), 4. Ritsumeikan Univ. (Japan))