title: Mechanical tuning of the evaporation rate of liquid on crossed fibers.
abstract: We investigate experimentally the drying of a small volume of perfectly wetting liquid on two crossed fibers. We characterize the drying dynamics for the three liquid morphologies that are encountered in this geometry: drop, column, and a mixed morphology, in which a drop and a column coexist. For each morphology, we rationalize our findings with theoretical models that capture the drying kinetics. We find that the evaporation rate significantly depends upon the liquid morphology and that the drying of the liquid column is faster than the evaporation of the drop and the mixed morphology for a given liquid volume. Finally, we illustrate that shearing a network of fibers reduces the angle between them, changes the morphology toward the column state, and therefore, enhances the drying rate of a volatile liquid deposited on it.
authors.forename: François
authors.initials: F
authors.lastname: Boulogne
authors.affiliation: ‡Surface du Verre et Interfaces, Unité Mixte de Recherche (UMR) 125, Centre National de la Recherche Scientifique (CNRS)/Saint-Gobain, 93303 Aubervilliers, France.
authors.forename: Alban
authors.initials: A
authors.lastname: Sauret
authors.forename: Beatrice
authors.initials: B
authors.lastname: Soh
authors.affiliation: ∥Department of Mechanical and Aerospace Engineering, New York University Polytechnic School of Engineering, Brooklyn, New York 11201, United States.
authors.forename: Emilie
authors.initials: E
authors.lastname: Dressaire
authors.forename: Howard A
authors.initials: HA
authors.lastname: Stone