Photochemical migration of liquid column in a glass tubeM. Muto, Y. Ayako, K. Yamamoto, M. Yamamoto, Y. Kondo and M. MotosukeEur. Phys. J. Special Topics, 226 6 (2017) 1199-1205DOI: https://doi.org/10.1140/epjst/e2016-60217-y