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Takatsugu Endo is a Bachelor of Engineering graduate of Chiba University and received his Ph.D. degree from Chiba University. He worked as a Research Fellow at Chiba University (Professor K. Nishikawa’s group) and the University of California, Davis (Professor S. Sen’s group) from 2009 to 2014. Then, he joined Professor K. Takahashi’s group at Kanazawa University as Assistant Professor. In 2017, he was appointed Associate Professor at Doshisha University. His research interests are in relationships between molecular structure/dynamics and the physical properties. He has been working in the field of physical chemistry of ionic liquids for more than 10 years.

Kozo Fujii has been a Project Researcher in the Nishikawa group at Chiba University since 2011. He received a M.S. degree from Kyusyu University in 1975 and his Ph.D. degree from Chiba University in 2014. He has more than 30 years of business experience as a chemist and management executive in the global business arena, in the FMCG (fast moving consumer goods) category in Germany and in Japan. His research interests are in physicochemical properties and dynamics of ionic liquids.

Keiko Nishikawa is a Research Professor in the Graduate School of Science at Chiba University and will be a Fellow at the Toyota Physical and Chemical Institute from 2019. She received her M.S. degree in 1974 and Ph.D. degree in 1981 from Tokyo University. She worked as an Assistant Professor at Gakusyuin University (1974–1991), an Associate Professor at Yokohama National University (1991–1996), and a Professor at Chiba University (1996–2014). Later, she became a Research Professor at Chiba University and an Inspector General at Japan Society for Promotion of Science (JSPS). She was the project leader of Grant-in-Aid for Scientific Research (KAKENHI) on Priority Areas ‘Science of Ionic Liquids’ (2005–2009). Her research interests are in physicochemical properties, structure and dynamics of ionic liquids as well as fluctuations of disordered material systems such as liquids, solutions, and supercritical fluids.