Visual simulation of aurora movement. - Takafumi Kojima; Ryota Takeuchi; Soji Yamakawa; Taichi Watanabe; Koji Mikami (SIGGRAPH Asia Posters, 2011)

Low Leakage Current Nb-Based Tunnel Junctions with an Extra Top Al Layer. - Mizuki Ikeya; Takashi Noguchi; Takafumi Kojima; Takeshi Sakai (IEICE Trans. Electron., 2017)

Dynamical model of HEV with two planetary gear units and its application to optimization of energy consumption. - Jiangyan Zhang; Shota Inuzuka; Takafumi Kojima; Tielong Shen; Junichi Kako (Sci. China Inf. Sci., 2019)

Development of Superconducting Devices Supporting Radio Astronomy. - Yoshinori Uzawa; Matthias Kroug; Takafumi Kojima; Masanori Takeda; Kazumasa Makise; Shohei Ezaki; Wenlei Shan; Akihira Miyachi; Yasunori Fujii; Hirotaka Terai (IEICE Trans. Electron., 2021)

Characterization of ALMA Band 2 Orthomode Transducers at Cryogenic Temperatures. - Sho Masui; Ryo Sakai; Takafumi Kojima; Keiko Kaneko (IEEE Trans. Instrum. Meas., 2025)