Observation of electron decay dynamics in Pt nano-structures by femtosecond infrared luminescence Tohru Suemoto, Noriaki Sugimoto, Kazutaka Nishikawa, Ken-ichi Yamanaka and Shinji Inagaki EPJ Web Conf., 205 (2019) 04018 Published online: 16 April 2019 DOI: 10.1051/epjconf/201920504018