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Interfacial Dripping Faucet: Generating Monodisperse Liquid Lenses
Lorène Champougny1,2, Vincent Bertin3, Jacco H Snoeijer3
1<a href="https://ror.org/03ths8210">Carlos III University of Madrid</a>, Thermal and Fluids Engineering Department, Avenida de la Universidad, 30 (Sabatini building), 28911 Leganés (Madrid), Spain.
Abstract:
We present a surface analog to a dripping faucet, where a viscous liquid slides down an immiscible meniscus. Periodic pinch-off of the dripping filament is observed, generating a succession of monodisperse floating lenses. We show that this interfacial dripping faucet can be described analogously to its single-phase counterpart, replacing surface tension by the spreading coefficient, and even undergoes a transition to a jetting regime. This liquid-liquid-gas system opens perspectives for the study of the dynamics of emulsions at interfaces.

