Contact-line deposits from multiple evaporating droplets

Abstract

Evaporating sessile droplets interact with neighboring droplets via their vapor fields, resulting in nonaxisymmetric evaporative fluxes from their surfaces. One of the consequences of this asymmetry is that, unlike the uniform deposits left at the contact lines of isolated droplets, the deposits left at the contact lines of droplets with neighbors are, in general, nonuniform. In this work we develop a theoretical model for the contact-line deposits from multiple evaporating droplets, and find its predictions for a pair of identical droplets to be in excellent agreement with recent experimental results.

Topics & Concepts