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We investigate experimentally the drying of a small volume of perfectlywetting liquid on two crossed fibers. We characterize the drying dynamics forthe three liquid morphologies that are encountered in this geometry: drop,column and a mixed morphology, in which a drop and a column coexist. For eachmorphology, we rationalize our findings with theoretical models that capturethe drying kinetics. We find that the evaporation rate depends significantly onthe liquid morphology and that the drying of liquid column is faster than theevaporation of the drop and the mixed morphology for a given liquid volume.Finally, we illustrate that shearing a network of fibers reduces the anglebetween them, changes the morphology towards the column state, and so enhancesthe drying rate of a volatile liquid deposited on it.

Mechanical tuning of the evaporation rate of liquid on crossed fibers