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Updated: Jan 29, 2026

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device
Published on: December 25, 2015
Double-Emulsion Drop Evaporation and Formation of a Daughter Droplet
Muhammad Rizwanur Rahman1, Prashant R Waghmare1
1interfacial Science and Surface Engineering Lab ( iSSELab), Department of Mechanical Engineering , University of Alberta , Edmonton , Alberta T6G2G8 , Canada.
Abstract:
In this study, we present experimental and theoretical analyses of evaporating a double-emulsion drop resting on a substrate. Multistage evaporation of the outer and inner droplet is witnessed. The complete evaporation of the outer drop and the initialization of the inner drop evaporation demonstrate an interesting transition dynamics. After the apparent completion of evaporation of the inner phase of a double-emulsion drop, surprisingly, formation of a daughter droplet is observed. We further investigated to hypothesize this phenomenon and achieved the formation of the daughter droplet for a single-phase drop as well. While engineering the "daughter drop formation" phenomena, we also proposed a way to obtain prolonged fixed contact line evaporation for a single-phase drop.
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