Droplet motion driven by humidity gradients during evaporation and condensation Hernán Barrio-Zhang, Élfego Ruiz-Gutiérrez, Daniel Orejon, Gary G. Wells and Rodrigo Ledesma-Aguilar Eur. Phys. J. E, 47 5 (2024) 32 Published online: 13 May 2024 DOI: 10.1140/epje/s10189-024-00426-7