Locus of first crystals on the evaporative surface of a vertically textured porous medium Babacar Diouf, Sandrine Geoffroy, Ariane Abou Chakra and Marc Prat Eur. Phys. J. Appl. Phys., 81 1 (2018) 11102 Published online: 30 April 2018 DOI: 10.1051/epjap/2018170340